CN221495825U - A clamping device - Google Patents

Abstract

The utility model relates to the technical field of tool clamps, in particular to a clamping device, which comprises a base, wherein a supporting structure for placing a workpiece to be clamped is fixedly arranged on the base, a clamping mechanism and a crank block mechanism connected with the clamping mechanism are further arranged on the base, a linear motion output end of the crank block mechanism is in transmission connection with the clamping mechanism and can enable at least one clamping mechanism to move close to and far away from the workpiece, the clamping mechanism is provided with a locking position for clamping the workpiece and a release position far away from the workpiece in the moving process, the clamping mechanism can be switched between the locking position and the release position by operating the crank block mechanism, the movement is flexible, the operation efficiency is remarkably improved, and when the clamping mechanism is in locking and positioning, the reliability of the clamping device for clamping the workpiece is higher, and the fixing effect of the clamping mechanism on the workpiece is effectively ensured.

Description

Clamping device

Technical Field

The utility model relates to the technical field of tool clamps, in particular to a clamping device.

Background

In the process of assembling the pole for the pole switch, the internal structure of the pole for the pole switch, including a vacuum arc-extinguishing chamber, an outlet seat, an insulating pull rod and the like, is required to be assembled in the insulating shell in sequence, particularly the vacuum arc-extinguishing chamber is pushed to the top end of the pole, and in the process, the pole is required to be prevented from moving to the position in the pushing direction so as to ensure that the vacuum arc-extinguishing chamber can be assembled in place; when the bottom insulation pull rod assembly and torque check and the top vacuum arc-extinguishing chamber fastening torque check are carried out, the axial rotation of the top end and the bottom end of the pole needs to be guaranteed, but because the bottom of the pole is circular, the pole is easy to rotate, namely the pole can axially rotate or move along the assembly direction, so that the assembly quality is seriously influenced. Therefore, the assembly process is generally completed by cooperation of the operation group, the requirement on the fixing effect is very high, operators are required to press the pole respectively and assemble the internal structure, so that the pole is guaranteed not to rotate and move in the force application direction when parts such as an arc extinguishing chamber are assembled, the working strength of the technicians is extremely high, the assembly quality is frequently influenced by poor fixing effect, the quality inspection flaw rate is increased, and the huge hidden quality trouble exists.

The prior art, for example, the patent of the utility model with the publication number of CN218469824U discloses a combined tool for detecting the machining size of a special-shaped steel pipe, and particularly discloses a combined tool which comprises a base, wherein one side of the top of the base is fixedly connected with a first supporting plate fixedly provided with a first clamp, the other side of the top of the base is provided with a second supporting plate movably provided with a second clamp, and one side of the first clamp opposite to the second clamp is symmetrically designed. The second clamp is driven to move towards the first clamp through the conveying mechanism to fix the special-shaped steel pipe, the second clamp is moved by the conveying mechanism arranged in the base, the movable plate fixedly connected to the bottom of the supporting plate is connected with the internal thread pipe, the internal thread pipe is sleeved on the rotating rod and is in threaded connection with a thread groove on the surface of the rotating rod, the rotating rod is driven to rotate through the action of the motor on the main shaft, and therefore the internal thread pipe drives the supporting plate to move, and the supporting plate drives the second clamp to move.

But it is through the rotary rod spiral drive and make the backup pad remove, and backup pad removal forms and need rely on the rotary rod to rotate many circles just can realize, and transmission speed is slower, when wanting to improve transmission speed through adjusting motor output, not only troublesome operation to its essence still is to utilize the screw thread pair to realize the transmission, and friction loss is big, and mechanical efficiency in the transmission process is still lower, thereby leads to frock centre gripping dysmorphism steel pipe inefficiency.

Disclosure of utility model

The utility model aims to provide a clamping device which solves the problems that in the prior art, in the process of moving a clamping mechanism to clamp a workpiece, the moving efficiency of the clamping mechanism is low, and the work efficiency of the clamping device for fixing the workpiece is seriously affected.

The utility model adopts the following technical scheme:

The utility model provides a clamping device, the on-line screen storage device comprises a base, fixedly provided with bearing structure on the base, bearing structure is used for supplying to wait to centre gripping work piece to place, still be provided with fixture and the slider-crank mechanism who is connected with fixture on the base, slider-crank mechanism's sharp action output transmission connects fixture and can make at least one fixture be close to and keep away from the work piece and remove, fixture has the locking position of clamping the work piece and keeps away from the release position of work piece in the removal in-process, can make fixture switch between locking position and release position through operating slider-crank mechanism, slider-crank mechanism is in the locking position when being in dead point position department.

The beneficial effects are that: the clamping device provided by the utility model is improved aiming at the existing clamping and fixing tool, a workpiece to be clamped is firstly placed on a supporting structure, and the clamping mechanism connected with the crank-slider mechanism can be directly moved by operating the crank-slider mechanism, so that the clamping mechanism can perform reciprocating linear motion, and at the moment, the clamping mechanism can be driven to move to a locking position for clamping the workpiece only by manually operating the crank-slider mechanism to enable the crank-slider mechanism to rotate for a short circuit. Compared with the prior art, the utility model can be driven only by operating the angle of the crank, and the distance traveled by the crank in the rotation process is smaller than the distance of one circle of rotation, so that the clamping mechanism can be switched between the locking position for clamping the workpiece and the releasing position far away from the workpiece, the movement is flexible, and the operation efficiency is obviously improved; and because the crank block mechanism will push up dead fixture when the crank block mechanism is in the dead point for clamping device presss from both sides the reliability of work piece higher, has effectively guaranteed the fixed effect of fixture to the work piece.

As a further improvement, the clamping mechanisms are arranged on two opposite sides of the base, and the clamping mechanisms on two sides are connected through the linkage mechanism so as to enable the clamping mechanisms on two sides to synchronously move.

As a further improvement, the interlocking mechanism includes racks provided on opposite sides of the both-side holding mechanism and gears that mesh with both racks to drive.

As a further improvement, the clamping mechanism comprises a clamping frame and a clamping piece for clamping the workpiece, wherein the clamping piece is adjustably arranged on the clamping frame, and moves close to and away from the workpiece along with the clamping piece in the moving process of the clamping frame.

As a further improvement, the clamping member has a mounting end on the opposite side of the clamped workpiece, the mounting end passing through the clamping frame and being adjustably mounted on the clamping frame by a threaded connection with the clamping frame.

As a further improvement, the clamping piece is of a V-shaped structure and at least comprises two groups so as to clamp different parts of the workpiece respectively.

As a further improvement, the clamping frame is provided with a guide rod along the direction parallel to the moving direction, the supporting structure is provided with an adaptive guide groove, and the guide rod slides in the guide groove in a guiding manner during the moving process of the clamping frame.

As a further improvement, the support structure comprises support risers fixedly arranged on two sides of the base, and further comprises a support seat connected between the two support risers, wherein a space on the support seat is used for accommodating a workpiece to be clamped.

As a further improvement, the support base is disposed above the interlocking mechanism.

As a further improvement, the supporting blocks are arranged on the supporting seat in pairs, the supporting blocks can move on the supporting seat close to and away from each other, and two surfaces of the supporting blocks close to each other form a V-shaped supporting surface for bearing and supporting the workpiece to be clamped.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a clamping device according to the present utility model;

FIG. 2 is a schematic perspective view of a clamping device according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an embodiment of the clamping device provided by the utility model without showing the slider-crank mechanism;

In the figure: 1. the device comprises a base, 2, a supporting structure, 21, a supporting vertical plate, 22, a supporting seat, 3, a clamping mechanism, 31, a clamping frame, 32 clamping pieces, 4, a crank-slider mechanism, 41, a crank, 42, a connecting rod, 43, a slider, 5, a linkage mechanism, 51, a gear, 52, a rack, 6, a guide rod, 7, a guide groove, 8, a knob, 9 supporting blocks, 10, a connecting plate, 11, a screw rod, 12 and a rotation stopping structure.

Detailed Description

The features and capabilities of the present utility model are described in further detail below in connection with the examples.

The clamping device provided by the utility model has the following operation principle:

The clamping device shown in fig. 1-2 comprises a base 1, wherein a supporting structure 2 and a clamping mechanism 3 are fixedly arranged on the base 1, the supporting structure 2 is used for placing a workpiece to be clamped, a linear motion output end of a crank-slider mechanism 4 arranged on the base 1 is in transmission connection with the clamping mechanism 3 and can enable at least one clamping mechanism 3 to move close to and far away from the workpiece, the clamping mechanism 3 is provided with a locking position for clamping the workpiece and a fixing position far away from the workpiece in the moving process, the crank-slider mechanism 4 is operated to enable the clamping mechanism 3 to be switched between the locking position and the releasing position, meanwhile, because the crank-slider mechanism 4 is provided with a dead point, the clamping mechanism 3 is in the locking position when the crank-slider mechanism 4 is in the dead point position, the clamping mechanism 3 can be quickly moved to the locking position only by operating a very short stroke of the crank-slider mechanism 4, the operation is simple, the working efficiency of the clamping device is improved, and the fixing effect on the workpiece is reliably ensured.

Based on the above general description of the clamping device according to the utility model, a more specific embodiment is provided below on the basis of the general description:

The present embodiment focuses on the detailed description of the clamping mechanism 3 in the clamping device. The clamping mechanisms 3 are correspondingly arranged on two sides of a workpiece to be clamped, so that the clamping mechanisms 3 close to one side of the crank block mechanism 4 can be arranged in a movable mode for convenience in manufacturing, the clamping mechanisms 3 on the other side are fixedly arranged, and at the moment, the clamping mechanisms 3 on one side can be moved to a proper position by operating the crank block mechanism 4, so that the clamping mechanisms 3 on the other side are matched with the clamping mechanisms 3 on the other side to clamp and fix the workpiece. The crank slider mechanism 4 is specifically arranged to comprise a crank 41, a connecting rod 42 and a slider 43, the slider 43 can be quickly moved for a long distance by operating the crank 41 to rotate for less than one circle, so that the clamping mechanism can be quickly moved to a locking position, the movement is flexible, the movement route is accurate, the slider can be controlled to move through the rotation angle of the crank, the control is convenient, and the work efficiency is greatly improved.

In order to improve the working efficiency of the clamping device, clamping mechanisms 3 are arranged on two sides, wherein the clamping mechanisms 3 can move close to and away from a workpiece, and at the moment, a linkage mechanism 5 is arranged between the clamping mechanisms 3 on two sides, so that when one side of the clamping mechanism 3 is moved by operating the crank slider mechanism 4, the other side of the clamping mechanism 3 also moves synchronously, thereby shortening the time consumed by the movement of the clamping mechanism 3 and improving the working efficiency. The linkage mechanism 5 is preferably a gear transmission mechanism with high transmission efficiency and long service life, as shown in fig. 3, at this time, racks 52 are disposed on opposite sides of the two-side clamping mechanisms 3, and a gear 51 engaged with and driven by the two racks 52 is disposed on the bottom plate, so as to realize synchronous movement of the two-side clamping mechanisms 3. Compared with the case that the clamping mechanism 3 on one side moves, the working efficiency is improved, so that the time for the clamping mechanism 3 to move to the expected position is greatly shortened. And the gear mechanism is convenient to provide and not easy to damage, and the service life of the device and the safe and stable operation period are prolonged.

Of course, other forms of gear transmission mechanisms can be adopted, or the linkage mechanism 5 can be a first connecting rod and a second connecting rod which are hinged on opposite sides of the two-side clamping mechanism 3, the first connecting rod and the second connecting rod are both hinged with the middle connecting rod, a fixed seat is arranged on the base 1, the middle position of the middle connecting rod is hinged on the fixed seat, the middle connecting rod can rotate along the hinged position, when the crank sliding block mechanism 4 is operated to enable the one-side clamping mechanism 3 to move so as to enable the first connecting rod to move, the middle connecting rod rotates by taking a hinge point on the fixed seat as a center, and the other end of the middle connecting rod drives the second connecting rod connected with the middle connecting rod to enable the second connecting rod to synchronously move with the first connecting rod, so that the first connecting rod and the second connecting rod synchronously move reversely, and the two-side clamping mechanism 3 is enabled to simultaneously approach or keep away from a workpiece. Of course, other linkage mechanisms capable of realizing the reverse synchronous movement of the two side clamping mechanisms 3 can be adopted, and the description thereof will not be repeated here.

The clamping mechanism 3 specifically comprises a clamping frame 31 and a clamping piece 32 for clamping a workpiece, the clamping frame 31 moves close to and far away from the workpiece in the moving process, the clamping frame 31 can be a long plate with the length close to the length of a bottom plate, the clamping frame 31 is easy to install, but in order to save manufacturing materials and control the cost, in order to facilitate the observation of the working state of the clamping device, in other embodiments, the clamping frame 31 is designed to be a strip-shaped plate body with a narrower width, so that the force overcome by pushing the clamping mechanism 3 by the crank slider mechanism 4 is reduced, the clamping mechanism 3 is lighter and faster, and in order to ensure the pushing of the crank slider mechanism 4 to the clamping mechanism 3, a plurality of groups of clamping frames 31 arranged on the same side are connected with connecting plates 10, and meanwhile, the connecting plates 10 are connected with the crank slider mechanism 4, so that the connecting plates 10 act on the plurality of groups of clamping frames 31 through the crank slider mechanism 4, and the synchronous movement of the plurality of groups of the clamping frames 31 is realized.

The clamping member 32 has one side for clamping a workpiece, and the other side has a mounting end penetrating the clamping frame 31 and adjustably mounted on the clamping frame 31 through a screw connection structure with the clamping frame 31, specifically, the mounting end of the clamping member 32 is screw-connected with the clamping frame 31, and the mounting end thereof is connected with a knob 8 after extending out of the clamping frame, and the rotation of the mounting end of the clamping member 32 is adjusted by rotating the knob 8, thereby adjusting the clamping member 32 to clamp or release the workpiece.

However, the present utility model also provides another more optimized embodiment, as shown in fig. 3, the clamping member 32 is adjustably installed relative to the clamping frame 31 by a screw nut mechanism, specifically, a screw 11 is provided, meanwhile, a threaded hole matched with the screw 11 is provided on the clamping member 32, the two form a threaded pair matched, the rotation stopping structure 12 is specifically a hole pin guiding structure, and comprises a guiding pin and a guiding hole, the guiding pin is arranged on the clamping member 32, the guiding hole is arranged on the clamping frame 31, and when the screw 11 is rotated by the adjusting knob 8, the clamping member 32 can only make a linear motion along the extending direction of the guiding pin by the guiding hole and the guiding pin. Meanwhile, the guide pin can also be arranged on the clamping frame 31, the guide hole can be arranged on the clamping piece 32, and the guide hole pin guide structure can also be formed to enable the clamping piece 32 to do linear motion. The clamping piece 32 can better move close to or away from the workpiece through the screw nut mechanism, the adjustment is convenient and efficient, and the working efficiency is improved.

The clamping members 32 may be provided in only one set to clamp the workpiece from both sides, but in this case, the clamping members 32 are large in size and are inconvenient to adjust. Meanwhile, in order to improve the application range, especially when the device is used for fixing the pole, as the outer diameters of the two axial ends of the pole are not equal, a plurality of groups of clamping pieces 32 are arranged at the moment, of course, the clamping pieces 32 can be arranged in a plurality of groups, namely, the clamping pieces can be arranged on a long plate with the length close to the length of the bottom plate at intervals, and can also be respectively arranged on a strip-shaped plate body with a narrower width, each clamping piece 32 can be adjusted through a knob 8 at the tail end of the clamping piece, so that workpieces can be clamped from different parts, especially when the sizes of the workpieces are not uniform, the clamping pieces 32 can also firmly clamp the workpieces. Particularly, when the clamping pieces 32 are arranged in a plurality of groups, the clamping pieces 32 are arranged in the horizontal direction and the vertical direction along the axial extension direction of the workpiece at least, so that the workpiece is clamped in multiple directions, and the fixing effect is better.

In order to improve the adaptation degree of the clamping piece 32 to different workpieces to be clamped, one side of the clamping piece 32 for clamping the workpieces is of a detachable structure, so that the clamping piece 32 which is more adapted can be replaced in time according to the workpieces of different shapes and sizes, the service time of the clamping piece 32 is long, and the clamping piece 32 is convenient to replace when the abrasion is serious. In addition, when this clamping device is applied to the fixed to the column body especially to the utmost point post, clamping piece 32 sets up to V type structure, and when clamping piece 32 was close to the work piece, V type clamping piece can press from both sides tightly fixed to the utmost point post of equidimension not, realizes the adaptation to improved clamping piece 32's accommodation, and V type structure is because both sides shrink, its clamping effect is also better, and the fixed effect is higher.

On the basis of the above description of the integrity of the clamping device of the utility model, or of the clamping mechanism 3 of the utility model introduced above, a more specific embodiment is also provided below:

This embodiment focuses on the detailed description of the support structure 2 in the clamping device. As shown in fig. 3, the support structure 2 is used for placing a workpiece to be clamped. In this embodiment, the supporting structure 2 includes supporting risers 3 fixedly disposed on two sides of the bottom plate, and further includes a supporting seat 22 connected between the two supporting risers 3, and a space on the supporting seat 22 is used for accommodating a workpiece to be clamped. In order to further stably place the workpiece on the supporting seat 22 so as to prepare for the clamping action of the clamping mechanism 3, it is preferable that an elongated slot is arranged on the supporting seat 22 along the radial direction of the workpiece to be clamped, two supporting blocks 9 which can be relatively close to and far away from each other are slidably arranged in the elongated slot, and when the distance between the two supporting blocks 9 is adjusted according to the workpiece to be clamped, the supporting blocks 9 can be fixed on the supporting seat 22 through fasteners, so that the stability and the reliability of the supporting blocks 9 for bearing and supporting the workpiece to be clamped are improved. In the working process of the clamping device, the workpiece to be clamped is only required to be placed on the supporting seat, the workpiece is not required to be held for operation, and operation steps are saved, so that the clamping and fixing operation of the workpiece is simpler and more convenient.

The two adjacent surfaces of the supporting blocks 9 form a V-shaped supporting surface for bearing and supporting the workpiece to be clamped, and of course, the shapes of the supporting blocks 9 can be various, and the two adjacent surfaces of the supporting blocks can also form a U-shaped, semicircular and the like, so that the supporting blocks can be used for supporting the workpiece to be clamped.

Furthermore, in another embodiment, the support base 22 is hollow except for the portion where the support block 9 is disposed on the support base 22, so that the material consumption for manufacturing the device is reduced, the weight of the device is reduced, and the use of the device is more convenient.

On the basis of the above description of the integrity of the clamping device of the utility model, or of the clamping mechanism 3, the support structure 2 of the utility model as described above, a more specific embodiment is also provided below:

The supporting structure 2 is not only used for placing the workpiece to be clamped, but also can provide a guide channel for the movement of the clamping mechanism 3, a more specific embodiment is that the clamping frame 31 is provided with the guide rod 6, the extending direction of the guide rod 6 is parallel to the moving direction of the clamping frame 31, meanwhile, the supporting structure 2 is provided with the adaptive guide groove 7, at the moment, the supporting vertical plate 3 is preferably provided with the guide groove 7, the guide groove 7 is provided with two types of guide grooves, including the guide groove 7 adapting to the guide rod 6, the guide groove 7 adapting to the mounting end of the clamping piece 32, the supporting vertical plate 21 and the clamping frame 31 are arranged on the bottom plate in parallel, the clamping frame 31 is arranged on the outer side of the supporting vertical plate 21, the crank slider mechanism 4 is connected on the outer side of the clamping frame 31, the crank slider mechanism 4 is operated to enable the clamping frame 31 to move, the guide rod 6 on the clamping frame 31 and the mounting end of the clamping piece 32 slide in the guide groove 7, and the guide groove 7 provides a guide moving channel for the guide rod 6 on the clamping frame 31, and the movement of the clamping mechanism 3 is ensured to move stably.

In order to improve the matching degree between the clamping mechanism 3 and the supporting structure 2, the clamping mechanism 3 is in guiding sliding connection with the supporting structure 2, specifically, the guide rod 6 on the clamping frame 31 passes through the guide groove 7 on the supporting vertical plate 21, at this time, the bottom of the clamping frame 31 is not contacted with the bottom plate in the moving process of the clamping frame 31, so that the friction force in the moving process of the clamping frame 31 is reduced, and the clamping mechanism 33 moves more rapidly under the driving of the crank slider mechanism 4, thereby improving the working efficiency.

The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.

The specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims (10)

1. The utility model provides a clamping device, includes the base, fixedly on the base be provided with bearing structure, bearing structure is used for supplying to wait that centre gripping work piece places, its characterized in that: the base is also provided with a clamping mechanism and a crank block mechanism connected with the clamping mechanism, the linear motion output end of the crank block mechanism is in transmission connection with the clamping mechanism and can enable at least one clamping mechanism to move close to and away from a workpiece, the clamping mechanism is provided with a locking position for clamping the workpiece and a release position away from the workpiece in the moving process, the clamping mechanism can be switched between the locking position and the release position by operating the crank block mechanism, and the clamping mechanism is in the locking position when the crank block mechanism is at a dead point position.

2. The clamping device as claimed in claim 1, wherein: the clamping mechanisms are arranged on two opposite sides of the base, and the clamping mechanisms on the two sides are connected through the linkage mechanism so that the clamping mechanisms on the two sides can synchronously move.

3. The clamping device as claimed in claim 2, wherein: the linkage mechanism comprises racks arranged on opposite sides of the two-side clamping mechanism and gears which are meshed with the two racks for transmission.

4. The clamping device as claimed in claim 1, wherein: the clamping mechanism comprises a clamping frame and a clamping piece used for clamping the workpiece, the clamping piece is adjustably arranged on the clamping frame, and in the moving process of the clamping frame, the clamping piece moves along with the clamping frame to be close to or far away from the workpiece.

5. The clamping device as recited in claim 4, wherein: the clamping piece is provided with a mounting end at one side opposite to the clamping workpiece, and the mounting end penetrates through the clamping frame and is adjustably mounted on the clamping frame through a threaded connection structure with the clamping frame.

6. Clamping device according to claim 4 or 5, characterized in that: the clamping piece is of a V-shaped structure and at least comprises two groups so as to clamp different parts of the workpiece respectively.

7. Clamping device according to claim 4 or 5, characterized in that: the clamping frame is provided with a guide rod along the direction parallel to the moving direction, the supporting structure is provided with an adaptive guide groove, and the guide rod slides in the guide groove in a guiding manner in the moving process of the clamping frame.

8. The clamping device as claimed in claim 2, wherein: the supporting structure comprises supporting vertical plates fixedly arranged on two sides of the base, and further comprises a supporting seat connected between the two supporting vertical plates, and a space on the supporting seat is used for accommodating a workpiece to be clamped.

9. The clamping device as recited in claim 8, further characterized in that: the supporting seat is arranged above the linkage mechanism.

10. Clamping device according to claim 8 or 9, characterized in that: the support blocks are arranged on the support seat in pairs, and can move close to and away from each other on the support seat, and two surfaces of the support blocks close to each other form a V-shaped support surface for bearing and supporting a workpiece to be clamped.