CN214473469U - Transmission mechanism for battery detection - Google Patents

Abstract

The utility model provides a transmission mechanism for battery detection, which comprises a carrying disc and a transmission assembly, wherein the transmission assembly comprises a transmission unit and a lifting unit; the carrying disc is used for bearing the clamp body clamped with the battery workpiece; the transmission unit is used for driving the carrying disc to move, the carrying disc moves to the lifting unit, and the lifting unit jacks up the carrying disc to enable the carrying disc to be separated from the transmission unit; the lifting unit comprises a jacking module and a limiting support, wherein the jacking end of the jacking module drives the carrying disc to be close to the limiting support; the jacking module is used for pushing the carrying disc to be in contact with the limiting support, so that the position of the carrying disc is limited, the carrying disc is fixed, external equipment can conveniently take and place battery workpieces, and the transmission mechanism is stable in structure and convenient to use.

Description

Transmission mechanism for battery detection

Technical Field

The utility model belongs to the non-standard battery automation field, concretely relates to transmission device that battery detected.

Background

In the detection process of the battery, particularly for the button battery, in order to facilitate the detection equipment to detect the interior of the battery, the battery needs to be vertically installed on a carrier, and the battery needs to be replaced after the detection is finished, so that the battery is detachably connected to the carrier, and in order to ensure that the battery is stably placed at a fixed position of the carrier, at present, the battery is usually clamped on the carrier through a clamping mechanism, and then the battery is taken and placed on a transmission mechanism through a grabbing mechanism;

at present, the last lifting subassembly that is provided with of transport mechanism, with the convenient carrier location of carrier lifting, however, because it presss from both sides tight battery to snatch the mechanism and snatch the battery in-process carrier, cause the battery to be difficult to break away from the carrier to lead to the carrier to break away from the lifting subassembly, in order to solve above-mentioned problem, need a transport mechanism that battery detected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a transmission device that battery detected, the lifting unit includes jacking module, spacing support, presss from both sides the carrier through jacking module, spacing support and tightly to the restriction carrier removes, and this transmission device simple structure is convenient to be maintained.

The utility model provides a transmission mechanism for battery detection, which comprises a carrying disc and a transmission assembly, wherein the transmission assembly comprises a transmission unit and a lifting unit; the carrying disc is used for bearing the clamp body clamped with the battery workpiece;

the transmission unit is used for driving the carrying disc to move, the carrying disc moves to the lifting unit, and the lifting unit jacks up the carrying disc to enable the carrying disc to be separated from the transmission unit; wherein the content of the first and second substances,

the lifting unit comprises a jacking module and a limiting bracket, and the jacking end of the jacking module drives the carrying disc to be close to the limiting bracket; the jacking module pushes the carrying disc to be in contact with the limiting support, so that the position of the carrying disc is limited, and the carrying disc is fixed.

Preferably, a convex limiting block is arranged on the limiting support, and the position of the carrying disc is limited by the limiting block.

Preferably, convex edges are arranged on two side surfaces of the carrying disc, and one surface of the limiting block is in contact with the convex edges; the other side of the limiting block is in contact with the side face of the carrying disc, so that the carrying disc is fixed on the limiting support.

Preferably, the jacking module comprises a fixed block, a jacking driver and a jacking plate; the fixed block is fixedly installed on the limiting support, the jacking driver is installed on the fixed block, the jacking plate is connected with the movable end of the jacking driver, and the jacking plate is used for bearing and placing the carrying disc.

Preferably, the carrying disc is provided with a positioning hole, the lifting plate is provided with a positioning column, and the positioning column is correspondingly connected with the positioning hole so as to limit the carrying disc to move.

Preferably, the positioning holes include a first positioning hole and a second positioning hole, the first positioning hole is disposed close to one side edge of the carrier disc, and the second positioning hole is disposed close to the other corresponding side edge; the shapes of the first positioning hole and the second positioning hole are different, and the shapes of the positioning columns corresponding to the first positioning hole and the second positioning hole are different.

Preferably, the fixed block is provided with a guide sleeve, the jacking plate is provided with a guide pillar, and the guide sleeve is connected with the guide pillar in a sliding manner.

Preferably, the conveying unit comprises a production line body, and the production line body is used for driving the carrying disc to move.

Preferably, the assembly line body is provided with a blocking module;

the two side faces of the carrying disc are provided with notches, buffer sheets are installed in the notches, and the block portion of the blocking module is in contact with the buffer sheets, so that the carrying disc is limited to move along with the assembly line body.

Preferably, the carrying disc is provided with at least two carrying ports for placing the clamp body, and the carrying ports are inwards recessed relative to the upper surface of the carrying disc; the shape of the accommodating port is consistent with that of the clamp body.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a pair of transmission device that battery detected, lifting unit include jacking module, spacing support, press from both sides the carrier through jacking module, spacing support and press from both sides tightly, and the restriction carrier removes, the utility model discloses convenient to use, simple structure.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is an exploded view of the present invention in one embodiment;

fig. 3 is a schematic perspective view of a first embodiment of a tray according to the present invention;

FIG. 4 is an enlarged partial schematic view of FIG. 3;

FIG. 5 is a top view of a boat in one embodiment of the present invention;

fig. 6 is a schematic perspective view of a second embodiment of the present invention;

fig. 7 is a schematic perspective view of a transmission assembly according to an embodiment of the present invention;

fig. 8 is a schematic perspective view of a lifting unit according to an embodiment of the present invention;

FIG. 9 is an enlarged partial schematic view of FIG. 8;

FIG. 10 is an exploded view of the lifting unit according to an embodiment of the present invention

Fig. 11 is a schematic perspective view of a clamp body according to an embodiment of the present invention;

fig. 12 is an exploded view of the clamp body according to an embodiment of the present invention.

Shown in the figure:

41. a carrying tray; 411. a receiving port; 4111. reinforcing ribs; 412. a first positioning hole; 413. a second positioning hole; 414. a convex edge; 415. a recess; 416. a buffer sheet; 417. a buffer hole; 42. a clamp body; 421. a material tray; 422. a pushing assembly; 4221. a push block; 42213. unlocking the opening; 4222. a spring; 423. A stopper; 4231. a connecting surface; 424. a limiting block; 43. a transmission assembly; 431. a transmission unit; 4311. a flow line body; 4312. a blocking module; 432. a lifting unit; 4321. a jacking module; 43211. a fixed block; 43212. a guide sleeve; 43213. a jacking driver; 43214. a guide post; 43215. a jacking plate; 43216, locating columns; 4322. a limiting bracket; 43221. a limiting block; 5. a battery.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a more detailed description of the present invention, which will enable those skilled in the art to make and use the present invention. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1-2, a battery detection transport mechanism includes a tray 41, a transport assembly 43, the transport assembly 43 includes a transport unit 431 and a lifting unit 432; the carrying disc 41 is used for bearing the clamp body 42 clamped with the battery workpiece;

in a preferred embodiment, the clamp body 42 includes a load block 421, a push assembly 422, a stop 423; the material bearing blocks 421 are used for connecting the clamp bodies 42 to form a whole, and the parts on the clamp bodies 42 take the material bearing blocks 421 as carriers thereof, so that the clamp bodies 42 are connected with each other to form a clamp of the battery 5 convenient to clamp; the bearing block 421 includes a bearing plate, the bearing plate is used as a bearing structure of the bearing clamp body 42, a first groove is formed on the bearing plate, and the battery 5 is placed in the first groove; the position of the battery 5 in the horizontal direction is limited by the first groove, the pushing component 422 and the stop 423; the pushing assembly 422 comprises a pushing block 4221;

the bearing plate is provided with a second groove which is communicated with the first groove, the pushing assembly 422 comprises a pushing block 4221, and the pushing block 4221 is arranged in the second groove; install the pressure head on the one end that ejector pad 4221 is close to battery 5, slide in the second recess when ejector pad 4221, be equipped with the pressure head that conveniently compresses tightly battery 5 on the one side that ejector pad 4221 is close to battery 5, the pressure head passes first recess 4212 and battery 5 contact, promote battery 5 through the pressure head, the realization is to compressing tightly of battery 5, through the second recess, make the effort that promotes subassembly 422 and promote battery 5 act on dog 423, make dog 423 to battery 5's holding power and the thrust that promotes subassembly 422 and promote battery 5 on same horizontal straight line, thereby make and promote subassembly 422, dog 423 presss from both sides tightly battery 5 steadily.

Limiting bosses are mounted on two sides of the push block 4221, so that the first groove 4212 limits the limiting bosses to move, acting force acts on the limiting bosses on two sides of the push block 4221, the second groove is T-shaped, the push block 4221 moves in the second groove, the cross section of the first groove is smaller than that of the second groove, the limiting bosses on two sides of the push block 4221 are limited to move into the first groove 4212, and the moving distance of the push block 4221 is limited through the first groove.

The bottom surface and the side wall of the first groove are in contact with the battery 5; the battery 5 is positioned by placing the battery 5 in a first recess, the bottom surface of which, in a preferred embodiment, matches the shape of the battery 5, the bottom surface of which is curved and interacts with the sides of the battery 5, the two sides of which are tangent to the battery 5, thereby retaining the battery 5 in the first recess.

The shape of pressure head is trapezoidal, and the cross sectional shape of pressure head is less than first recess shape, makes things convenient for the pressure head to pass first recess and battery 5's partial contact to press from both sides tightly battery 5.

The battery 5 is vertically placed in the first groove, so that one side of the battery 5 is placed in the first groove, the pushing assembly 422 is in contact with the battery 5 placed on one side of the first groove, the other side of the battery 5 protrudes out of the material bearing block 421, as shown in fig. 3, a protrusion is arranged on the side face of the battery 5, the protruding portion of the battery 5 is higher than the material bearing block 421, so that the pressure head portion stably compresses the battery 5, and the outside grabbing equipment is convenient to take and place the battery 5 due to the fact that the portion of the battery 5 is higher than the material bearing block 421.

In a preferred embodiment, the pushing assembly 422 further comprises a spring 4222, and the spring 4222 is arranged between the limiting boss and the inner wall of the second groove; wherein, spring 4222 is used for forming the effort that promotes subassembly 422 and compress tightly battery 5, through spacing boss and second recess inner wall compression spring 4222 for the reaction of the resilience force of spring 4222 is on promoting subassembly 422, thereby makes to promote subassembly 422 and compress tightly battery 5, and spring 4222 is used as the bolster that promotes subassembly 422 simultaneously, thereby avoids promoting subassembly 422 and battery 5 rigid connection to damage battery 5.

The bearing plate is provided with a limiting block 424, the limiting block 424 is arranged above the spring 4222, the spring 4222 is limited by the limiting block 424 to move in the vertical direction, the spring 4222 is arranged between the limiting boss and the second groove, the spring 4222 is prevented from rebounding in the vertical direction due to compression of the spring 4222, and therefore the spring 4222 is separated from a gap between the limiting boss and the second groove.

The pushing block 4221 is provided with an unlocking hole 42213, so that an external driving device can conveniently extend into the unlocking hole 42213 and can be in contact with the inner wall of the unlocking hole 42213, the external driving device pushes the pushing block 4221 to move by pushing the inner wall of the unlocking hole 42213, the pushing block 4221 is enabled to be separated from the battery 5, and therefore the grabbing device can conveniently grab the battery 5 on the clamp body 42 or place the battery 5 on the clamp body 42.

The limiting block 424 is arranged above part of the push block 4221, the projection of the limiting block 424 in the vertical direction falls on the push block 4221, the limiting block 424 limits the push block 4221 to move in the vertical direction at the same time, the push block 4221 moves in the direction towards the battery 5, the limiting block 424 is detachably connected to the bearing plate 4211 through screws, and parts in the push assembly 422 are replaced conveniently.

The transmission unit 431 is used for driving the carrying tray 41 to move, the carrying tray 41 moves to the lifting unit 432, and the lifting unit 432 lifts the carrying tray 41 so that the carrying tray 41 is separated from the transmission unit 431; wherein the content of the first and second substances,

the lifting unit 432 comprises a lifting module 4321 and a limit bracket 4322, wherein the lifting end of the lifting module 4321 drives the carrier disc 41 to approach the limit bracket 4322; the carrier tray 41 is pushed by the jacking module 4321 to contact the limit bracket 4322, so that the position of the carrier tray 41 is limited, and the carrier tray 41 is fixed.

The limiting bracket 4322 is provided with a protruding limiting block 43221, and the position of the carrying disc 41 is limited by the limiting block 43221.

The transfer unit 431 includes a line body 4311, and the line body 4311 is used for driving the carrier tray 41 to move.

Convex edges 414 are arranged on two corresponding sides of the carrying disc 41, and the convex edges 414 are flush with the lower surface of the carrying disc 41; and both ends of chimb 414 are equipped with the chamfer that is used for the direction, conveniently carry dish 41 to place and carry on the transmission on transmission equipment through setting up chimb 414, and the both ends of chimb 414 set up the chamfer simultaneously, will guide and carry dish 41 and adjust the position of carrying dish 41 for carry dish 41 and carry out the adjustment of position on assembly line body 4311 in the transmission course, in order to adapt to subsequent detection procedure.

Meanwhile, one surface of the limiting block 43221 contacts with the convex edge 414; the other surface of the limit block 43221 contacts with the side surface of the carrier disk 41, thereby fixing the carrier disk 41 to the limit bracket 4322.

The jacking module 4321 comprises a fixed block 43211, a jacking driver 43213 and a jacking plate 43215; the fixed block 43211 is fixedly installed on the limit bracket 4322, the lift driver 43213 is installed on the fixed block 43211, the lift plate 43215 is connected to the movable end of the lift driver 43213, and the lift plate 43215 is used for supporting the tray 41.

The carrying tray 41 is provided with positioning holes, the lifting plate 43215 is provided with positioning posts 43216, and the positioning posts 43216 are correspondingly connected with the positioning holes, so as to limit the movement of the carrying tray 41.

In a preferred embodiment, the carrying tray 41 is provided with a plurality of positioning holes for limiting the position of the carrying tray 41; the positioning holes include a first positioning hole 412 and a second positioning hole 413, the first positioning hole 412 is disposed near one side of the carrier disc 41, and the second positioning hole 413 is disposed near the other side;

the shapes of the first positioning hole 412 and the second positioning hole 413 are different, and positioning holes with two different shapes are used for positioning, so that the shapes of positioning columns 43216 corresponding to the first positioning hole 412 and the second positioning hole 413 are different, a foolproof effect is achieved, the carrying disc 41 is placed in a certain direction, detection equipment can normally detect the carrying disc 41, and if the carrying disc 41 is placed in the opposite direction, the detection equipment cannot accurately detect the battery workpiece on the carrying disc 41, so that the detection result is influenced.

The fixed block 43211 is provided with a guide sleeve 43212, the lifting plate 43215 is provided with a guide post 43214, and the guide sleeve 43212 is slidably connected with the guide post 43214.

The carrying disc 41 is detachably connected with a plurality of clamp bodies 42, and the clamp bodies 42 are used for clamping and fixing the battery workpieces;

at least two receiving and releasing ports 411 are formed in the upper surface of the carrying disc 41, the receiving and releasing ports 411 are recessed inwards relative to the upper surface of the carrying disc 41, the recessed shape of the receiving and releasing ports 411 is consistent with the shape of the clamp body 42, and the clamp body 42 is installed in the receiving and releasing ports 411 in a matched mode; the position of the fixture body 42 is limited by the receiving opening 411, so that the battery workpiece is arranged at a fixed position, the carrying disc 41 moves to an external detection device, and the external detection device can accurately detect the battery workpiece on the carrying disc 41 conveniently, and meanwhile, due to the concave receiving opening 411 arranged on the carrying disc 41, the required material of the carrying disc 41 is reduced, and the quality of the whole carrying disc 41 is reduced.

Further, the lower surface of the carrier disc 41 is provided with a concave portion 415, so that the lower surface of the carrier disc 41 is concave inwards; the recess 415 is provided at a position corresponding to the socket 411; the lower surface of the boat 41 is formed in a concave shape, which reduces the material of the boat 41 and further reduces the mass of the boat 41.

Hold and put mouth 411 for the through-hole, it is provided with strengthening rib 4111 to hold in the mouth 411, strengthening rib 4111 links to each other with the inside wall that holds mouth 411, anchor clamps body 42 installs on strengthening rib 4111, set up threaded hole on the strengthening rib 4111, link to each other anchor clamps body 42 and strengthening rib 4111 through the screw, because strengthening rib 4111 links to each other with the inside that holds mouth 411, support through strengthening rib 4111 and hold mouth 411, the structural strength who carries dish 41 has been improved, and simultaneously, because strengthening rib 4111 area is less, guarantee strengthening rib 4111 and stabilize support anchor clamps body 42, strengthening rib 4111's thickness sets up between 3-5mm, compare in setting up the recess and lay anchor clamps body 42, strengthening rib 4111 further has reduced the quality that carries dish 41.

The carrying disc 41 is provided with a buffer hole 417; the buffer holes 417 are arranged near one side of the receiving opening 411, so that the buffer holes 417 are arranged on two sides of the carrier disc 41, when the carrier disc 41 is pressed, the clamp body 42 mounted in the receiving opening 411 is prevented from being pressed by deforming the buffer holes 417, the clamp body 42 is protected, and meanwhile, the mass of the carrier disc 41 is reduced by removing the material of the buffer holes 417.

The adjacent two side faces of the carrying disc 41 provided with the convex edge 414 are provided with notches, the buffer sheet 416 is installed in the notches, the blocking module 4312 is installed on the assembly line body 4311, the buffer sheet 416 is used for contacting with the blocking module 4312, the carrying disc 41 is blocked, the carrying disc 41 can be grabbed by external equipment conveniently, abrasion easily occurs due to the fact that the buffer sheet 416 collides with the blocking module 4312 for a long time, and the buffer sheet 416 and the carrying disc 41 can be detachably connected in order to replace.

On the basis, in order to further reduce the mass of the carrying disc 41, the main body structure of the carrying disc 41 is made of an aluminum alloy material, and because the aluminum alloy material has a small density and a light weight, and simultaneously gives consideration to the structural strength, compared with a general steel structure material, the aluminum alloy material can meet the strength requirement of the carrying disc 41, and can also reduce the weight of the carrying disc 41.

The utility model provides a transmission device for battery detection, the lifting unit comprises a jacking module and a limiting bracket, the carrier is clamped tightly by the jacking module and the limiting bracket, and the movement of the carrier is limited; the first positioning hole and the second positioning hole which are different in shape are arranged, so that the placement position of the carrying disc is guaranteed, and the fool-proof effect is achieved; the loading port is formed in the carrying disc and used for placing the clamp body, so that materials of the loading tool are reduced, the self weight is reduced, and meanwhile, the clamp body is limited by the loading port, so that the clamp body is more stable; the concave part is arranged on the lower surface of the carrying disc, so that the material of the carrying tool is further reduced, and the mass of the carrying tool is reduced; through having seted up the cushion hole on carrying the dish, play the guard action to the anchor clamps body in the carrier, the utility model discloses convenient to use, simple structure.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the utility model can be smoothly implemented by the ordinary technicians in the industry according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims (10)

1. A transmission mechanism for battery detection comprises a carrying disc (41) and a transmission assembly (43), and is characterized in that: the transmission assembly (43) comprises a transmission unit (431) and a lifting unit (432); the carrying disc (41) is used for bearing and holding a clamp body (42) clamped with a battery workpiece;

the conveying unit (431) is used for driving the carrying disc (41) to move, the carrying disc (41) moves to the lifting unit (432), and the lifting unit (432) jacks up the carrying disc (41) so that the carrying disc (41) is separated from the conveying unit (431); wherein the content of the first and second substances,

the lifting unit (432) comprises a jacking module (4321) and a limiting support (4322), wherein the jacking end of the jacking module (4321) drives the carrying disc (41) to be close to the limiting support (4322); the carrier disc (41) is pushed to be in contact with the limiting bracket (4322) through the jacking module (4321), so that the position of the carrier disc (41) is limited, and the carrier disc (41) is fixed.

2. A battery test transport mechanism as in claim 1, wherein: the limiting support (4322) is provided with a convex limiting block (43221), and the position of the carrying disc (41) is limited by the limiting block (43221).

3. A battery test transport mechanism as in claim 2, wherein: convex edges (414) are arranged on two side surfaces of the carrying disc (41), and one surface of the limiting block (43221) is in contact with the convex edges (414); the other surface of the limiting block (43221) is in contact with the side surface of the carrying disc (41), so that the carrying disc (41) is fixed on the limiting support (4322).

4. A battery test transport mechanism as in claim 1, wherein: the jacking module (4321) comprises a fixed block (43211), a jacking driver (43213) and a jacking plate (43215); the fixed block (43211) is fixedly arranged on the limiting support (4322), the jacking driver (43213) is arranged on the fixed block (43211), the jacking plate (43215) is connected with the movable end of the jacking driver (43213), and the jacking plate (43215) is used for bearing the carrying disc (41).

5. The battery test transport mechanism of claim 4, wherein: the carrying disc (41) is provided with positioning holes, the jacking plate (43215) is provided with positioning columns (43216), and the positioning columns (43216) are correspondingly connected with the positioning holes so as to limit the carrying disc (41) to move.

6. The battery test transport mechanism of claim 5, wherein: the positioning holes comprise a first positioning hole (412) and a second positioning hole (413), the first positioning hole (412) is arranged on one side of the carrier disc (41) in a close mode, and the second positioning hole (413) is arranged on the other corresponding side in a close mode; the shapes of the first positioning hole (412) and the second positioning hole (413) are different, and the shapes of the positioning columns (43216) corresponding to the first positioning hole (412) and the second positioning hole (413) are different.

7. The battery test transport mechanism of claim 4, wherein: the fixed block (43211) is provided with a guide sleeve (43212), the jacking plate (43215) is provided with a guide post (43214), and the guide sleeve (43212) is connected with the guide post (43214) in a sliding manner.

8. A battery test transport mechanism as in claim 1, wherein: the transmission unit (431) comprises a production line body (4311), and the production line body (4311) is used for driving the carrying disc (41) to move.

9. The battery test transport mechanism of claim 8, wherein: the assembly line body (4311) is provided with a blocking module (4312);

the two side faces of the carrying disc (41) are provided with notches, buffer sheets (416) are installed in the notches, and the carrying disc (41) is limited to move along with the assembly line body (4311) through the contact of the stop block part of the blocking module (4312) and the buffer sheets (416).

10. A battery test transport mechanism as in claim 1, wherein: the carrying disc (41) is provided with at least two carrying and placing openings (411) for placing the clamp body (42), and the carrying and placing openings (411) are inwards recessed relative to the upper surface of the carrying disc (41); the shape of the receiving opening (411) is consistent with that of the clamp body (42).

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