一種大皮(pi)重(zhong)小量程單點式稱(cheng)重(zhong)測力(li)傳感(gan)器

技術領域

[0001] 本發明專利(li)涉(she)及單點式稱重測(ce)力傳感器。

背景技術

[0002] 傳統(tong)的單點式測力(li)傳感(gan)器只有上梁(liang)和下(xia)梁(liang)，且受力(li)后(hou)應變區直接發生形變，隨即輸出信號。目前，有的應用場(chang)合為皮(pi)重(zhong)遠較稱(cheng)量(liang)量(liang)程大，比如，皮(pi)重(zhong)為100㎏而量(liang)程僅5㎏，上述結構的測力(li)傳感(gan)器遇到這種(zhong)情(qing)況，不能滿足(zu)稱(cheng)量(liang)精(jing)度，不適合大皮(pi)重(zhong)小量(liang)程的稱(cheng)重(zhong)要求。

發明內容

[0003] 本(ben)(ben)發明所(suo)(suo)要解決的技(ji)術問題是提供一(yi)種大(da)皮重小(xiao)量程單點式稱重測(ce)力(li)傳感(gan)器，以克服傳統單點式測(ce)力(li)傳感(gan)器皮重小(xiao)、量程大(da)、精度低的問題。為此(ci)，本(ben)(ben)發明采(cai)用以下(xia)(xia)技(ji)術方案：它包括(kuo)由上下(xia)(xia)左右四個剛(gang)性(xing)(xing)(xing)桿(gan)構成的整體(ti)彈性(xing)(xing)(xing)體(ti)，在四個剛(gang)性(xing)(xing)(xing)桿(gan)的交界處為橫(heng)(heng)梁(liang)部(bu)位，所(suo)(suo)述橫(heng)(heng)梁(liang)分(fen)為一(yi)對上橫(heng)(heng)梁(liang)和(he)(he)一(yi)對下(xia)(xia)橫(heng)(heng)梁(liang)，所(suo)(suo)述上橫(heng)(heng)梁(liang)和(he)(he)下(xia)(xia)橫(heng)(heng)梁(liang)呈矩(ju)形(xing)四角分(fen)布，所(suo)(suo)述上橫(heng)(heng)梁(liang)和(he)(he)下(xia)(xia)橫(heng)(heng)梁(liang)的橫(heng)(heng)截(jie)面積小(xiao)于(yu)剛(gang)性(xing)(xing)(xing)桿(gan)的橫(heng)(heng)截(jie)面積；所(suo)(suo)述彈性(xing)(xing)(xing)體(ti)中(zhong)間還設有豎(shu)(shu)梁(liang)，所(suo)(suo)述豎(shu)(shu)梁(liang)處于(yu)所(suo)(suo)述矩(ju)形(xing)的中(zhong)心(xin)，與上部(bu)剛(gang)性(xing)(xing)(xing)桿(gan)和(he)(he)下(xia)(xia)部(bu)剛(gang)性(xing)(xing)(xing)桿(gan)一(yi)體(ti)，所(suo)(suo)述一(yi)對上橫(heng)(heng)梁(liang)和(he)(he)一(yi)對下(xia)(xia)橫(heng)(heng)梁(liang)相(xiang)對于(yu)所(suo)(suo)述豎(shu)(shu)梁(liang)對稱，所(suo)(suo)述豎(shu)(shu)梁(liang)的橫(heng)(heng)截(jie)面積小(xiao)于(yu)上橫(heng)(heng)梁(liang)和(he)(he)下(xia)(xia)橫(heng)(heng)梁(liang)的橫(heng)(heng)截(jie)面積，豎(shu)(shu)梁(liang)用于(yu)設置稱重敏感(gan)元件。

[0004] 在(zai)采(cai)用上述(shu)技術方案的基(ji)礎上，本發明還可采(cai)用以下(xia)進(jin)一步的技術方案：所(suo)述(shu)豎(shu)梁處(chu)在(zai)由四個剛性桿圍成(cheng)的中部通(tong)孔中。

[0005] 所(suo)(suo)(suo)述(shu)(shu)(shu)上橫(heng)梁和下(xia)橫(heng)梁為在靠近它們所(suo)(suo)(suo)處端的彈(dan)性體上鉆孔(kong)而形成(cheng)的孔(kong)壁；所(suo)(suo)(suo)述(shu)(shu)(shu)孔(kong)與所(suo)(suo)(suo)述(shu)(shu)(shu)中(zhong)間通孔(kong)之間由(you)縫(feng)連(lian)通，并由(you)所(suo)(suo)(suo)述(shu)(shu)(shu)縫(feng)和孔(kong)界定將所(suo)(suo)(suo)述(shu)(shu)(shu)彈(dan)性體分(fen)為上下(xia)左右四(si)個剛(gang)性桿。

[0006] 所述縫相對于(yu)豎梁(liang)對稱設置。

[0007] 所述彈(dan)性體在中部通孔(kong)的外圍(wei)具有(you)盲孔(kong)圈。

[0008] 所述(shu)彈性體在對應形成上橫(heng)梁(liang)和下橫(heng)梁(liang)的(de)四個孔的(de)位置的(de)表面具有定(ding)位凹槽。

[0009] 由(you)于采用本(ben)發明(ming)的技術方案，所述上橫(heng)梁和下橫(heng)梁先于豎(shu)梁變(bian)(bian)(bian)形(xing)(xing)，用于承擔皮(pi)(pi)重(zhong)(zhong)，在皮(pi)(pi)重(zhong)(zhong)情況下豎(shu)梁不變(bian)(bian)(bian)形(xing)(xing)或變(bian)(bian)(bian)形(xing)(xing)極小，豎(shu)梁用于承擔稱(cheng)(cheng)(cheng)重(zhong)(zhong)測(ce)力的作(zuo)用，本(ben)發明(ming)的結構(gou)非常適(shi)合(he)大(da)(da)皮(pi)(pi)重(zhong)(zhong)小量程的稱(cheng)(cheng)(cheng)重(zhong)(zhong)要求。進一步(bu)地，本(ben)發明(ming)彈性體(ti)具(ju)有(you)鉸支結構(gou)特(te)點，四根橫(heng)梁不僅用于稱(cheng)(cheng)(cheng)重(zhong)(zhong)承載而且(qie)起到剛性桿(gan)的軸(zhou)的作(zuo)用，在稱(cheng)(cheng)(cheng)重(zhong)(zhong)時，彈性體(ti)由(you)矩形(xing)(xing)支撐向平行四邊(bian)形(xing)(xing)支撐轉(zhuan)變(bian)(bian)(bian)，豎(shu)梁變(bian)(bian)(bian)形(xing)(xing)時呈S形(xing)(xing)，能夠提高(gao)傳感(gan)器的稱(cheng)(cheng)(cheng)重(zhong)(zhong)靈(ling)敏度(du)，提高(gao)小量程的稱(cheng)(cheng)(cheng)重(zhong)(zhong)精(jing)度(du)。并且(qie)，本(ben)發明(ming)可(ke)通過改(gai)變(bian)(bian)(bian)上橫(heng)梁和下橫(heng)梁的橫(heng)截(jie)面(mian)積(ji)，以針對不同的皮(pi)(pi)重(zhong)(zhong)要求，通過改(gai)變(bian)(bian)(bian)豎(shu)梁的橫(heng)截(jie)面(mian)積(ji)則可(ke)控制量程，非常方便各(ge)種大(da)(da)皮(pi)(pi)重(zhong)(zhong)小量程的稱(cheng)(cheng)(cheng)重(zhong)(zhong)設計，提高(gao)稱(cheng)(cheng)(cheng)重(zhong)(zhong)測(ce)力傳感(gan)器的稱(cheng)(cheng)(cheng)重(zhong)(zhong)精(jing)度(du)。

附圖說明

[0010] 圖1為本發明所提供的(de)(de)實施例(li)1的(de)(de)主(zhu)視圖。

[0011] 圖(tu)2為(wei)圖(tu)1的俯視圖(tu)。

[0012] 圖3為本發明所提供的實施例2的主視圖。

具體(ti)實施方式(shi)

[0013] 實施例1，參照附,1、2。

[0014] 本(ben)發明包括由上(shang)下(xia)(xia)(xia)左右(you)四個(ge)剛性(xing)(xing)桿100a、100b、100c、100d構成(cheng)的(de)(de)(de)整體彈(dan)性(xing)(xing)體，在四個(ge)剛性(xing)(xing)桿的(de)(de)(de)交界(jie)處為橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)部(bu)位，所(suo)述(shu)(shu)(shu)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)分(fen)為一(yi)對(dui)(dui)上(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)11、12和(he)一(yi)對(dui)(dui)下(xia)(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)13、14，所(suo)述(shu)(shu)(shu)上(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)11、12和(he)下(xia)(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)13、14呈矩(ju)形(xing)四角分(fen)布，所(suo)述(shu)(shu)(shu)上(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)和(he)下(xia)(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)的(de)(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)截(jie)面積(ji)小于(yu)剛性(xing)(xing)桿的(de)(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)截(jie)面積(ji)；所(suo)述(shu)(shu)(shu)彈(dan)性(xing)(xing)體中間還設(she)有豎(shu)梁(liang)(liang)2，所(suo)述(shu)(shu)(shu)豎(shu)梁(liang)(liang)2處于(yu)所(suo)述(shu)(shu)(shu)矩(ju)形(xing)的(de)(de)(de)中心，與上(shang)部(bu)剛性(xing)(xing)桿100a和(he)下(xia)(xia)(xia)部(bu)剛性(xing)(xing)桿100b一(yi)體，所(suo)述(shu)(shu)(shu)一(yi)對(dui)(dui)上(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)11、12和(he)一(yi)對(dui)(dui)下(xia)(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)13、14相(xiang)對(dui)(dui)于(yu)所(suo)述(shu)(shu)(shu)豎(shu)梁(liang)(liang)對(dui)(dui)稱(cheng)，所(suo)述(shu)(shu)(shu)對(dui)(dui)稱(cheng)為上(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)之間對(dui)(dui)稱(cheng)、下(xia)(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)之間對(dui)(dui)稱(cheng)、上(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)和(he)下(xia)(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)之間對(dui)(dui)稱(cheng)，所(suo)述(shu)(shu)(shu)豎(shu)梁(liang)(liang)的(de)(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)截(jie)面積(ji)小于(yu)上(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)和(he)下(xia)(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)的(de)(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)截(jie)面積(ji)，豎(shu)梁(liang)(liang)用(yong)于(yu)設(she)置稱(cheng)重敏感元(yuan)件(jian)。

[0015] 所(suo)述(shu)豎梁2處在由四(si)個(ge)剛性桿圍(wei)成的(de)中部通孔20中。所(suo)述(shu)豎梁的(de)橫截面的(de)D向(xiang)尺(chi)寸大(da)于(yu)C向(xiang)尺(chi)寸，所(suo)述(shu)D向(xiang)為彈性體(ti)厚度方向(xiang)，所(suo)述(shu)C向(xiang)和D向(xiang)垂直。如果需要增大(da)量程時，也可以增大(da)C向(xiang)尺(chi)寸直至(zhi)大(da)于(yu)D向(xiang)尺(chi)寸。

[0016] 上述(shu)彈性體可為對一整塊剛性金屬(shu)件進行鉆孔和切割加(jia)工而成。

[0017] 所述上(shang)橫梁和下橫梁為在靠(kao)近它(ta)們所處端的(de)彈性體(ti)上(shang)鉆(zhan)孔5而(er)形成的(de)孔壁；所述孔5與所述中間通孔20之間由縫4連通，并由所述縫4和孔5界定將(jiang)所述彈性體(ti)分為上(shang)下左(zuo)右四個剛(gang)性桿(gan)。

[0018] 所(suo)述縫4相對(dui)(dui)(dui)(dui)(dui)于豎梁2對(dui)(dui)(dui)(dui)(dui)稱設置(zhi)。所(suo)述對(dui)(dui)(dui)(dui)(dui)稱為相鄰(lin)縫4之間(jian)對(dui)(dui)(dui)(dui)(dui)稱、對(dui)(dui)(dui)(dui)(dui)向縫4之間(jian)對(dui)(dui)(dui)(dui)(dui)稱。

[0019] 所述彈(dan)性體在中部通孔20的外圍具有盲孔圈(quan)6。

[0020] 所述彈性體(ti)在(zai)對(dui)應形成上橫梁和下橫梁的四個(ge)孔5的位置的表(biao)面(mian)具(ju)有定(ding)位凹(ao)槽7。

[0021] 在(zai)設(she)計時，通過設(she)計不(bu)同的(de)孔5壁厚A及(ji)彈性體厚度B可以(yi)改(gai)變(bian)皮重的(de)大(da)小(xiao)(xiao)，通過設(she)計不(bu)同的(de)豎梁壁厚C和豎梁寬(kuan)度D，可以(yi)控制量程，從而達到大(da)皮重小(xiao)(xiao)量程的(de)高精度傳感器。

[0022] 以所述(shu)傳感器的(de)(de)上(shang)橫(heng)梁(liang)(liang)(liang)(liang)和下(xia)橫(heng)梁(liang)(liang)(liang)(liang)可(ke)以承(cheng)受(shou)50kg的(de)(de)皮重為例。在所述(shu)上(shang)橫(heng)梁(liang)(liang)(liang)(liang)和下(xia)橫(heng)梁(liang)(liang)(liang)(liang)承(cheng)受(shou)50kg皮重后(hou)，豎梁(liang)(liang)(liang)(liang)才有足夠的(de)(de)形(xing)變(bian)，開始正常輸出(chu)信號。在上(shang)橫(heng)梁(liang)(liang)(liang)(liang)下(xia)橫(heng)梁(liang)(liang)(liang)(liang)承(cheng)受(shou)50kg以內的(de)(de)力(li)，豎梁(liang)(liang)(liang)(liang)變(bian)形(xing)極小(xiao)，沒有信號輸出(chu)。

[0023] 實施例(li)2，參照附(fu)圖3。

[0024] 在(zai)本實施例中，本發明同樣包括由上(shang)(shang)(shang)下(xia)(xia)左右(you)四個(ge)剛(gang)性(xing)桿100a、100b、100c、100d構成的(de)(de)(de)整體(ti)彈(dan)性(xing)體(ti)，在(zai)四個(ge)剛(gang)性(xing)桿的(de)(de)(de)交界處(chu)為橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)部(bu)位(wei)，所(suo)(suo)述(shu)(shu)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)分(fen)為一(yi)(yi)對(dui)(dui)(dui)上(shang)(shang)(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)11、12和一(yi)(yi)對(dui)(dui)(dui)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)13、14，所(suo)(suo)述(shu)(shu)上(shang)(shang)(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)11、12和下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)13、14呈矩(ju)形(xing)四角分(fen)布，所(suo)(suo)述(shu)(shu)上(shang)(shang)(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)和下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)的(de)(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)截面積(ji)小(xiao)于(yu)(yu)剛(gang)性(xing)桿的(de)(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)截面積(ji)；所(suo)(suo)述(shu)(shu)彈(dan)性(xing)體(ti)中間(jian)還設(she)有豎(shu)梁(liang)(liang)(liang)(liang)2，所(suo)(suo)述(shu)(shu)豎(shu)梁(liang)(liang)(liang)(liang)2處(chu)于(yu)(yu)所(suo)(suo)述(shu)(shu)矩(ju)形(xing)的(de)(de)(de)中心，與上(shang)(shang)(shang)部(bu)剛(gang)性(xing)桿100a和下(xia)(xia)部(bu)剛(gang)性(xing)桿100b一(yi)(yi)體(ti)，所(suo)(suo)述(shu)(shu)一(yi)(yi)對(dui)(dui)(dui)上(shang)(shang)(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)11、12和一(yi)(yi)對(dui)(dui)(dui)下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)13、14相(xiang)對(dui)(dui)(dui)于(yu)(yu)所(suo)(suo)述(shu)(shu)豎(shu)梁(liang)(liang)(liang)(liang)對(dui)(dui)(dui)稱(cheng)，所(suo)(suo)述(shu)(shu)對(dui)(dui)(dui)稱(cheng)為上(shang)(shang)(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)之間(jian)對(dui)(dui)(dui)稱(cheng)、下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)之間(jian)對(dui)(dui)(dui)稱(cheng)、上(shang)(shang)(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)和下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)之間(jian)對(dui)(dui)(dui)稱(cheng)，所(suo)(suo)述(shu)(shu)豎(shu)梁(liang)(liang)(liang)(liang)的(de)(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)截面積(ji)小(xiao)于(yu)(yu)上(shang)(shang)(shang)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)和下(xia)(xia)橫(heng)(heng)(heng)(heng)(heng)(heng)梁(liang)(liang)(liang)(liang)的(de)(de)(de)橫(heng)(heng)(heng)(heng)(heng)(heng)截面積(ji)，豎(shu)梁(liang)(liang)(liang)(liang)用(yong)于(yu)(yu)設(she)置(zhi)稱(cheng)重敏感元件8。

[0025] 所述豎梁(liang)2處在(zai)由四個剛性桿圍成的中(zhong)部通孔(kong)20中(zhong)。

[0026] 在實(shi)(shi)(shi)施例的(de)(de)(de)基礎上可以(yi)(yi)預見，對(dui)于(yu)上下(xia)(xia)(xia)橫(heng)(heng)(heng)梁(liang)(liang)的(de)(de)(de)形(xing)(xing)(xing)(xing)成方(fang)式還可以(yi)(yi)有其(qi)它多(duo)種方(fang)式，比(bi)如將上下(xia)(xia)(xia)橫(heng)(heng)(heng)梁(liang)(liang)部位的(de)(de)(de)彈性體(ti)銑(xian)(xian)薄(bo)，或將上下(xia)(xia)(xia)橫(heng)(heng)(heng)梁(liang)(liang)部位的(de)(de)(de)彈性體(ti)形(xing)(xing)(xing)(xing)狀銑(xian)(xian)成工(gong)字形(xing)(xing)(xing)(xing)截面等等，其(qi)最(zui)終目的(de)(de)(de)為(wei)使上、下(xia)(xia)(xia)橫(heng)(heng)(heng)梁(liang)(liang)的(de)(de)(de)橫(heng)(heng)(heng)截面積小于(yu)剛(gang)性桿的(de)(de)(de)橫(heng)(heng)(heng)截面積。對(dui)于(yu)上下(xia)(xia)(xia)橫(heng)(heng)(heng)梁(liang)(liang)的(de)(de)(de)形(xing)(xing)(xing)(xing)成方(fang)式實(shi)(shi)(shi)際上也(ye)可轉換(huan)成上下(xia)(xia)(xia)左右(you)四個(ge)剛(gang)性桿的(de)(de)(de)外形(xing)(xing)(xing)(xing)設置(zhi)問(wen)題，在本實(shi)(shi)(shi)施例中，“桿”不(bu)一(yi)定(ding)是細長形(xing)(xing)(xing)(xing)態（就(jiu)像”四連(lian)桿“中的(de)(de)(de)桿，也(ye)不(bu)一(yi)定(ding)必須(xu)是細長形(xing)(xing)(xing)(xing)狀，只要(yao)其(qi)起(qi)到“連(lian)桿”的(de)(de)(de)作(zuo)用(yong)即可）。在本發明中，“桿”比(bi)“梁(liang)(liang)”橫(heng)(heng)(heng)截面積大，而相對(dui)于(yu)橫(heng)(heng)(heng)梁(liang)(liang)成為(wei)剛(gang)形(xing)(xing)(xing)(xing)體(ti)，起(qi)到“后變形(xing)(xing)(xing)(xing)”的(de)(de)(de)作(zuo)用(yong)，使得與桿連(lian)接的(de)(de)(de)豎(shu)梁(liang)(liang)針對(dui)稱(cheng)重(zhong)物體(ti)變形(xing)(xing)(xing)(xing)，不(bu)受大皮重(zhong)影響(xiang)。