CN113959548B - Stable large-weight square weight of pile up neatly - Google Patents
Stable large-weight square weight of pile up neatly Download PDFInfo
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- CN113959548B CN113959548B CN202111236717.2A CN202111236717A CN113959548B CN 113959548 B CN113959548 B CN 113959548B CN 202111236717 A CN202111236717 A CN 202111236717A CN 113959548 B CN113959548 B CN 113959548B
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- weight
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- baffle
- bodies
- weight body
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- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 3
- 206010033307 Overweight Diseases 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000002932 luster Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/26—Counterweights; Poise-weights; Sets of weights; Holders for the reception of weights
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention provides a stable stacking large-weight square weight, which comprises at least two connecting pieces arranged between two weight bodies, wherein two sides of the top of each connecting piece are respectively connected with two bolts in a threaded manner, the two bolts are respectively embedded into two adjacent threaded holes arranged between the two weight bodies, and the two weight bodies are anchored into a whole through the bolts and the connecting pieces; according to the weight, the connecting piece is embedded into the weight body, so that the contact area of the connecting piece and the weight body is greatly increased, the pressure applied to the connecting piece by the weight body is uniformly dispersed, meanwhile, the connecting piece is limited by the sliding groove, the deformation degree of the connecting piece is effectively reduced, the strength of the connecting piece is maintained, the stress of the connecting piece is more uniform, the deformation condition of the connecting piece is greatly reduced, and the stability of the weight body in use is greatly improved.
Description
Technical Field
The invention relates to the technical field of weights, in particular to a high-weight square weight with stable stacking.
Background
The weights are standard measuring tools in modern mass measurement, the weights have determined mass and are mainly used for measuring the mass of objects, most common weights in the market are made of metal materials and are mostly in a combined form, and when the weights are used, a plurality of weights with different mass are generally combined to the required weight, so that the mass of a single weight is reduced, and the effect of expanding the application range is achieved by flexibly changing the combined mode;
the currently used large-weight square weights are often combined in a weight and connecting piece mode, but the weights are large in self-weight, the traditional connecting piece is not firm enough, the connecting part is troublesome to assemble and disassemble, and the use is inconvenient;
the combined weight which is easy to connect and found to be CN20201022.450.7 in the current application number is searched, and the weight is connected by adopting the connecting component, so that the weight can be conveniently combined into different weights for use, and the carrying is greatly facilitated;
but in the in-service use process, the weight body total mass after the combination increases, only adopts fixed plate, second even board and first link to fix the weight in one side of weight body and is difficult to reach stable fixed effect, and fixed plate, first link and second link all laminate in the lateral surface of weight body, and its area of contact is less, and coupling assembling local pressure is too high, and the weight of weight body bears on fixed plate and second link, leads to the fact the bending deformation of fixed plate and second link easily at pile up neatly in-process through lug transport weight, influences the normal use of weight.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-weight square weight with stable stacking, which solves the problems described in the background art.
The invention discloses a purpose and an effect of a stable stacking large-weight square weight, which are achieved by the following specific technical means: the weight comprises at least two weight bodies, wherein the weight bodies are standard weights, and four rectangular array threaded holes are formed in the tops of the weight bodies;
still include, at least two install the connecting piece between two weight bodies, the top both sides of connecting piece threaded connection respectively has two bolts, and two bolts imbeds respectively and set up in two adjacent screw holes between two weight bodies, make two weight bodies anchor as an organic wholely through bolt and connecting piece.
As a further aspect of the invention: the two weight bodies are arranged side by side, the two connecting pieces are perpendicular to the two weight bodies, and the two connecting pieces are arranged in parallel;
two parallel sliding grooves are formed in the top of the weight body;
the two connecting pieces are respectively embedded into the two sliding grooves.
As a further aspect of the invention: the threaded holes are divided into two groups, each group is two, the two groups of threaded holes are respectively formed in the two sliding grooves, and the threaded holes are equidistantly formed in the sliding grooves.
As a further aspect of the invention: the width of the lower end face of the chute is 30mm, and the width of the upper end face of the chute is 25mm;
the size of the connecting piece is matched with the size of the chute.
As a further aspect of the invention: two ends of the connecting piece are fixedly connected with two sliding blocks respectively, and the size of one side surface of the sliding block, which is far away from the connecting piece, is 0.9 time of the size of the section of the sliding groove;
the sliding block is arranged concentrically with the connecting piece.
As a further aspect of the invention: the bottom center of the connecting piece is provided with a baffle in a nested manner, the baffle is in an inverted T shape and is divided into an upper part and a lower part, namely a vertical part and a horizontal part;
the vertical part of the baffle plate is the same as the vertical section of the weight body in size.
As a further aspect of the invention: the middle vertical line of the horizontal part of the baffle plate is overlapped with the middle vertical line of the vertical part, and the width of the baffle plate is the same as that of the weight body;
the horizontal part and the vertical part of the baffle are both smooth.
As a further aspect of the invention: the baffle plate is composed of a tungsten steel block positioned in the center and white plastic steel blocks clamped on two sides of the tungsten steel block.
As a further aspect of the invention: a lifting lug is fixedly connected to the center of the top of the connecting piece;
the sum of the lengths of the connecting piece and the sliding blocks at the two sides of the connecting piece is equal to the length of the weight body.
As a further aspect of the invention: the connecting piece, the sliding block, the baffle and the lifting lug are all integrally cast.
As a further aspect of the invention: the outer side face of weight body is provided with the chromium coating.
The beneficial effects are that:
1. according to the weight, the connecting piece is embedded into the weight body, so that the contact area of the connecting piece and the weight body is greatly increased, the pressure applied to the connecting piece by the weight body is uniformly dispersed, meanwhile, the connecting piece is limited by the sliding groove, the deformation degree of the connecting piece is effectively reduced, the strength of the connecting piece is maintained, the stress of the connecting piece is more uniform, the deformation condition of the connecting piece is greatly reduced, and the stability of the weight body in use is greatly improved.
2. According to the weight body, the connecting piece and the baffle are designed, the weight body is fixed from two sides at the same time, the weight of the weight body is borne by the connecting piece and the baffle, the pressure of the connecting piece is greatly reduced, the baffle plays a role in protecting the weight body, the weight body is isolated from a tabletop, abrasion of the weight body is reduced, collision friction among the weight bodies is avoided, good protection effect is achieved, the integrity of the weight body is guaranteed, and the precision of the weight body is guaranteed.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of a partial structure of a weight body according to the present invention.
Fig. 3 is a schematic view of a part of the structure of the connector according to the present invention.
Fig. 4 is a schematic view of a baffle structure according to the present invention.
Fig. 5 is a top view of the overall structure of the present invention.
Fig. 6 is a left side view of the overall structure of the present invention.
Fig. 7 is a cross-sectional view of the overall structure of the present invention.
Fig. 8 is an enlarged schematic view of the structure of fig. 3 a according to the present invention.
In fig. 1 to 8, the correspondence between the component names and the reference numerals is:
the weight body 1, the threaded hole 101, the chute 102, the connecting piece 2, the bolt 201, the sliding block 202, the baffle 203 and the lifting lug 204.
Detailed Description
As shown in fig. 1 to 8:
example 1:
the large-weight square weight with stable stacking comprises at least two weight bodies 1, wherein the weight bodies 1 are standard weights, and four rectangular array threaded holes 101 are formed in the top of each weight body 1;
the weight body 1 is characterized by further comprising at least two connecting pieces 2 arranged between the two weight bodies 1, two bolts 201 are respectively connected with two sides of the top of the connecting pieces 2 in a threaded manner, the two bolts 201 are respectively embedded into two adjacent threaded holes 101 arranged between the two weight bodies 1, and the two weight bodies 1 are anchored into a whole through the bolts 201 and the connecting pieces 2;
the weight bodies 1 are horizontally arranged, the two weight bodies 1 are tightly attached, the two weight bodies 1 are respectively fixed through the two connecting pieces 2, the weight bodies 1 and the connecting pieces 2 are fixed into a whole through the bolts 201, so that stacking is facilitated, the effect of different weights can be achieved through changing the combination mode, and the application range is enlarged;
wherein: the number of the weight bodies 1 and the number of the connecting pieces 2 are synchronously increased, so that the weight combination is richer, and the use flexibility of the weight bodies 1 can be greatly improved;
example 2:
this embodiment differs from embodiment 1 in that: the two weight bodies 1 are arranged side by side, the two connecting pieces 2 are perpendicular to the two weight bodies 1, and the two connecting pieces 2 are arranged in parallel;
two parallel sliding grooves 102 are formed in the top of the weight body 1;
the two connecting pieces 2 are respectively embedded and arranged in the two sliding grooves 102;
the connecting piece 2 is limited through the sliding groove 102, deformation of the connecting piece 2 is reduced, the shape and strength of the connecting piece 2 are maintained, compared with a connecting mode that a connecting part is attached to the surface of the weight body 1, a mode that the connecting piece 2 is embedded into the weight body 1 is adopted, both sides and the bottom surface of the connecting piece 2 are contacted with the weight body 1, the contact area between the connecting piece 2 and the weight body 1 is enlarged, and therefore pressure caused to the connecting piece 2 when the weight body 1 is twisted in two directions respectively by taking the connecting piece 2 as an axis is dispersed, and the strength of the connecting piece 2 can be improved to a greater extent;
wherein: the arrangement of the two connecting pieces 2 can achieve the double-insurance effect, and better ensures the stability of the connection of the connecting pieces 2 and the weight body 1;
the threaded holes 101 are divided into two groups, each group is two, the two groups of threaded holes 101 are respectively formed in the two sliding grooves 102, and the threaded holes 101 are equidistantly formed in the sliding grooves 102;
4 threaded holes 101 are formed in the single weight body 1, 4 threaded holes are used when the two weight bodies 1 are connected with the connecting piece 2, and the rest of threaded holes 101 are reserved for subsequent connection of the weight bodies 1;
through the cooperation of the threaded holes 101 and the bolts 201, the situation that the weight bodies 1 slide towards two ends of the connecting piece 2 can be effectively prevented, the connecting piece 2 is of a strip-shaped columnar structure, the connecting piece has good tensile property, the two weight bodies 1 can be tightly attached to each other, the situation that collision and friction are caused by shaking between the weight bodies 1 is reduced, and the integrity of the weight bodies 1 is guaranteed so as to achieve the guarantee of precision;
the width of the lower end face of the chute 102 is 30mm, and the width of the upper end face of the chute 102 is 25mm;
the size of the connecting piece 2 is matched with the size of the chute 102;
the vertical section of the connecting piece 2 is isosceles trapezoid, so that the connecting piece cannot move to the top of the chute 102, and the situation that the two weight bodies 1 are staggered up and down is avoided;
meanwhile, the sliding groove 102 ensures the flatness of the connecting piece 2, and avoids the condition that the connecting piece 2 is in arched deformation;
when the weight is used, the weight body 1 slides along the axis of the connecting piece 2, so that the connecting piece 2 is inserted into the weight body 1, and the assembly process can be completed;
two sliding blocks 202 are fixedly connected to two ends of the connecting piece 2 respectively, and the size of one side surface of the sliding block 202 far away from the connecting piece 2 is 0.9 time of the size of the section of the sliding groove 102;
the sliding block 202 is arranged concentrically with the connecting piece 2;
the size of the sliding block 202 is smaller than that of the sliding groove 102, so that the sliding block 202 can be easily inserted into the sliding groove 102, in the actual assembly process, a worker does not need to align the connecting piece 2 with the sliding groove 102 intentionally, and only after the sliding block 202 is inserted into the sliding groove 102, the connecting piece 2 can be inserted into the weight body 1 by finely adjusting the position of the connecting piece 2;
a baffle 203 is nested in the center of the bottom of the connecting piece 2, the baffle 203 is in an inverted T shape, and the baffle 203 is divided into an upper part and a lower part, namely a vertical part and a horizontal part;
the vertical part of the baffle 203 has the same vertical section size as the weight body 1;
the baffle 203 is arranged between the two weight bodies 1, and the baffle 203 provides buffer space for the weight bodies 1, so that the two weight bodies 1 are prevented from hard contact;
the baffle 203 has the same size as the side surface of the weight body 1, the side surface of the weight body 1 is protected in all directions through the baffle 203, the situation of mutual friction collision between the two weight bodies 1 is effectively prevented, the integrity of the weight body 1 is ensured, and therefore the precision of the weight body 1 is ensured;
the middle vertical line of the horizontal part of the baffle 203 coincides with the middle vertical line of the vertical part, and the width of the baffle 203 is the same as that of the weight body 1;
the outer walls of the horizontal part and the vertical part of the baffle 203 are smooth;
the horizontal part of the baffle 203 is connected with the connecting piece 2 into a whole through the vertical part, and the baffle 203 and the connecting piece 2 bear the weight of the weight body 1 at the same time, so that the pressure of the connecting piece 2 is greatly reduced, the double-insurance effect is achieved, the baffle 203 arranged at the center of the bottom of the connecting piece 2 can be used for limiting the connecting piece 2, and the condition that the connecting piece 2 presents an arch shape when being pulled upwards is avoided;
the deformation condition of the connecting piece 2 can be effectively reduced, and the baffle 203 can isolate the weight body 1 from the tabletop when the weight body 1 is placed on the tabletop, so that the weight loss caused by abrasion of the weight body 1 is avoided, and the protection effect on the weight body 1 is further improved;
the outer side surface of the baffle 203 is set to be smooth, so that the friction coefficient of the outer side surface of the baffle 203 is effectively reduced, and the abrasion condition of the baffle 203 and the weight body 1 is lightened;
the baffle 203 is composed of a tungsten steel block positioned at the center and white plastic steel blocks clamped at two sides of the tungsten steel block;
the white plastic steel layers on the two sides of the baffle 203 have good rigidity, elasticity, corrosion resistance and ageing resistance, can protect the weight body 1, and meanwhile, the tungsten steel block has good strength, and mainly bears the weight of the weight body 1, so that the weight is a basic guarantee of the overall strength of the baffle 203;
a lifting lug 204 is fixedly connected to the center of the top of the connecting piece 2;
the sum of the lengths of the connecting piece 2 and the sliding blocks 202 at the two sides is equal to the length of the weight body 1;
the lifting lug 204 is mainly used for carrying the weight body 1, and meanwhile, the lifting lug 204 prevents the condition that the connecting piece 2 is pulled to take an arch to a certain extent;
along with the increase of the number of the weight bodies 1, when the connecting pieces 2 are inserted into the left side and the right side of the single weight body 1, the two connecting pieces 2 are fixed on the weight body 1 through the bolts 201, and meanwhile, the horizontal part of the baffle 203 can completely cover the lower end face of the weight body 1, so that the weight of the weight body 1 is well borne through the baffle 203, and the effect of protecting the connecting pieces 2 is achieved;
the plurality of weight bodies 1 can be connected as a whole by increasing the number of the connecting pieces 2;
the connecting piece 2, the sliding block 202, the baffle 203 and the lifting lug 204 are all integrally cast;
the connecting piece 2, the sliding block 202, the baffle 203 and the lifting lug 204 are integrally formed, so that welding spots do not exist, the overall rigidity can be ensured, the deformation of the connecting piece 2 is effectively avoided due to the improvement of the strength, and the use is simpler and more convenient;
the outer side surface of the weight body 1 is provided with a chromium plating layer;
the chromium coating enables the outer side surface of the weight body 1 to have good wear resistance and corrosion resistance, scraping generated during use cannot affect the weight body 1, and metallic luster generated after chromium plating greatly improves the luster of the weight body 1, so that the weight body 1 has higher ornamental value.
Claims (6)
1. The large-weight square weight with stable stacking comprises at least two weight bodies (1), wherein the weight bodies (1) are standard weights, and four rectangular array threaded holes (101) are formed in the tops of the weight bodies (1);
the method is characterized in that: the weight comprises a weight body (1) and at least two connecting pieces (2) arranged between the two weight bodies;
two bolts (201) are respectively connected with two sides of the top of the connecting piece (2) in a threaded manner, the two bolts (201) are respectively embedded into two adjacent threaded holes (101) between the two weight bodies (1), and the two weight bodies (1) are anchored into a whole through the bolts (201) and the connecting piece (2);
the two connecting pieces (2) are perpendicular to the two weight bodies (1), and the two connecting pieces (2) are arranged in parallel;
two parallel sliding grooves (102) are formed in the top of the weight body (1);
the two connecting pieces (2) are respectively embedded into the two sliding grooves (102);
the threaded holes (101) are divided into two groups, each group is two, the two groups of threaded holes (101) are respectively formed in the two sliding grooves (102), and the threaded holes (101) are equidistantly formed in the sliding grooves (102);
a baffle (203) is nested in the center of the bottom of the connecting piece (2), the baffle (203) is in an inverted T shape, and the baffle (203) is divided into an upper part and a lower part, namely a vertical part and a horizontal part;
the vertical part of the baffle (203) is the same as the vertical section of the weight body (1); the width of the baffle (203) is the same as that of the weight body (1);
the outer walls of the horizontal part and the vertical part of the baffle plate (203) are smooth.
2. The palletized stable high weight square weight according to claim 1, wherein: the width of the lower end face of the sliding groove (102) is 30mm, and the width of the upper end face of the sliding groove (102) is 25mm;
the size of the connecting piece (2) is matched with the size of the sliding groove (102).
3. The palletized stable high weight square weight according to claim 1, wherein: two ends of the connecting piece (2) are fixedly connected with two sliding blocks (202) respectively, and the size of one side surface of the sliding block (202) far away from the connecting piece (2) is 0.9 times of the size of the section of the sliding groove (102).
4. The palletized stable high weight square weight according to claim 1, wherein: the baffle (203) is composed of a tungsten steel block positioned in the center and white plastic steel blocks clamped on two sides of the tungsten steel block.
5. A palletised stable heavy square weight according to claim 3, characterised in that: the sum of the lengths of the connecting piece (2) and the sliding blocks (202) at the two sides of the connecting piece is equal to the length of the weight body (1).
6. The palletized stable high weight square weight according to claim 1, wherein: the connecting piece (2), the sliding block (202), the baffle (203) and the lifting lug (204) are all integrally cast, and the outer side surface of the weight body (1) is provided with a chromium plating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236717.2A CN113959548B (en) | 2021-10-23 | 2021-10-23 | Stable large-weight square weight of pile up neatly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236717.2A CN113959548B (en) | 2021-10-23 | 2021-10-23 | Stable large-weight square weight of pile up neatly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113959548A CN113959548A (en) | 2022-01-21 |
| CN113959548B true CN113959548B (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111236717.2A Active CN113959548B (en) | 2021-10-23 | 2021-10-23 | Stable large-weight square weight of pile up neatly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113959548B (en) |
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|---|---|---|---|---|
| EP1686358A1 (en) * | 2005-01-26 | 2006-08-02 | Mettler-Toledo GmbH | Modular calibrating weight |
| CN205449265U (en) * | 2016-04-08 | 2016-08-10 | 常州艾克瑞特衡器有限公司 | Loading weight is established ties and is improved structure |
| CN205603080U (en) * | 2016-04-28 | 2016-09-28 | 江苏连云港港口股份有限公司 | Multipurpose combination formula weight |
| CN207229666U (en) * | 2017-10-10 | 2018-04-13 | 重庆北碚国通锻造有限公司 | A kind of screening machine clump weight being easily installed |
| DE202019106049U1 (en) * | 2019-10-30 | 2019-12-06 | Tenwinkel Gmbh & Co. Kg | Heavy-duty test weight unit for load testing crane systems |
| CN210037239U (en) * | 2019-06-19 | 2020-02-07 | 江苏省特种设备安全监督检验研究院 | Combined weight for electric hoist test |
| CN111220253A (en) * | 2020-03-25 | 2020-06-02 | 常州市富月砝码有限公司 | Combined weight easy to connect |
| CN212300576U (en) * | 2020-06-22 | 2021-01-05 | 蓬莱鸿鑫平衡器有限公司 | Groove type anti-falling weight |
| CN213397339U (en) * | 2020-11-24 | 2021-06-08 | 常熟市金羊砝码仪器有限公司 | Weight capable of being connected quickly |
| CN214114614U (en) * | 2020-10-29 | 2021-09-03 | 天津荣昌科技有限公司 | Firm effectual elevator balancing weight connection structure |
-
2021
- 2021-10-23 CN CN202111236717.2A patent/CN113959548B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1686358A1 (en) * | 2005-01-26 | 2006-08-02 | Mettler-Toledo GmbH | Modular calibrating weight |
| CN205449265U (en) * | 2016-04-08 | 2016-08-10 | 常州艾克瑞特衡器有限公司 | Loading weight is established ties and is improved structure |
| CN205603080U (en) * | 2016-04-28 | 2016-09-28 | 江苏连云港港口股份有限公司 | Multipurpose combination formula weight |
| CN207229666U (en) * | 2017-10-10 | 2018-04-13 | 重庆北碚国通锻造有限公司 | A kind of screening machine clump weight being easily installed |
| CN210037239U (en) * | 2019-06-19 | 2020-02-07 | 江苏省特种设备安全监督检验研究院 | Combined weight for electric hoist test |
| DE202019106049U1 (en) * | 2019-10-30 | 2019-12-06 | Tenwinkel Gmbh & Co. Kg | Heavy-duty test weight unit for load testing crane systems |
| CN111220253A (en) * | 2020-03-25 | 2020-06-02 | 常州市富月砝码有限公司 | Combined weight easy to connect |
| CN212300576U (en) * | 2020-06-22 | 2021-01-05 | 蓬莱鸿鑫平衡器有限公司 | Groove type anti-falling weight |
| CN214114614U (en) * | 2020-10-29 | 2021-09-03 | 天津荣昌科技有限公司 | Firm effectual elevator balancing weight connection structure |
| CN213397339U (en) * | 2020-11-24 | 2021-06-08 | 常熟市金羊砝码仪器有限公司 | Weight capable of being connected quickly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113959548A (en) | 2022-01-21 |
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