CN212264593U

CN212264593U - Crane beam plate drilling and clamping device

Info

Publication number: CN212264593U
Application number: CN202020556585.6U
Authority: CN
Inventors: 赵会兵; 李晓; 李贵修; 李召; 李威
Original assignee: Henan Tianqiao Heavy Machinery Co ltd
Current assignee: Henan Tianqiao Heavy Machinery Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2021-01-01
Anticipated expiration: 2030-04-15

Abstract

The utility model relates to a hoist beam slab drilling clamping device, including drilling platform, the ascending one end of its width direction is equipped with two side by side along its length direction and decides splint, two decide the splint top and all be equipped with vertical stop gear, it is including establishing the support frame at corresponding fixed splint top, vertical fixed being equipped with first pneumatic cylinder on the horizontal segment of support frame, the piston rod of first pneumatic cylinder is down and the first movable clamp plate of fixedly connected with, the ascending position department that the other end of drilling platform width direction corresponds two vertical stop gear all is equipped with horizontal stop gear, horizontal stop gear includes the backup pad of vertical setting, the fixed second pneumatic cylinder that is equipped with of level in the backup pad, the piston rod of second pneumatic cylinder moves the splint towards corresponding fixed splint place orientation and fixedly connected with second movable clamp plate of deciding. The utility model discloses the clamp force distributes evenly, the effect is firm, and convenient operation, and accommodation is big, guarantees to press from both sides tightly and high positioning accuracy the firm of work piece, improves drilling efficiency and drilling quality.

Description

Crane beam plate drilling and clamping device

Technical Field

The utility model belongs to the technical field of the hoist production, concretely relates to hoist beam slab drilling clamping device.

Background

The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects within a certain range, and is also called a crown block, a traveling crane, a crane and the like. The crane can be divided into a light and small crane, a bridge crane, a jib crane, a cable crane and the like according to the structural form, wherein the bridge crane can operate in a rectangular field and above the rectangular field and is mainly used for loading and unloading articles in workshops, warehouses, open storage yards and the like. The bridge frame of the bridge frame crane is a basic component, and mainly comprises a main beam, an end beam, a walking platform and the like, wherein the connection between the end beam and the main beam and the walking platform needs a certain connecting part, usually, a hole needs to be drilled on the end beam, the needed connecting part is installed on the end beam, and then the connection between the end beam and the main beam and the walking platform is carried out. However, most of the limiting clamping mechanisms in the existing end beam drilling device are manually adjusted and compressed by screws with handles and pressing plates at two ends, the manual adjustment is complicated in operation, the efficiency is low, the pressing force is not easy to control, if a plurality of groups of clamping mechanisms are arranged in one direction, different forces applied by the groups of clamping mechanisms can cause unbalance of clamping action, the end beam cannot be stably limited, the adjustment range of the screws is limited, and the clamping mechanisms cannot be matched with the drilling requirements of end beams of various specifications and sizes, namely the clamping mechanisms generally have the problems of poor clamping, inconvenient operation, small application range and the like, the position deviation of the end beam in the drilling process is easy to cause lower drilling precision, poor drilling quality is not favorable for the finished product quality of the whole crane, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a hoist beam slab drilling clamping device utilizes two sets of vertical stop gear to compress tightly spacingly from vertical direction to end beam both ends, utilizes two sets of horizontal stop gear to compress tightly spacingly from the horizontal direction to end beam both ends, and all adopts pneumatic cylinder control to compress tightly, easy operation, and accommodation is big, and the clamp force distributes evenly, the effect is firm, improves drilling quality greatly to solve above-mentioned problem.

In order to achieve the above object, the utility model adopts the following technical scheme: a drilling and clamping device for a beam plate of a crane comprises a drilling platform, wherein two fixed clamping plates are fixedly arranged at one end in the width direction of the drilling platform side by side along the length direction of the drilling platform, the tops of the two fixed clamping plates are respectively provided with a longitudinal limiting mechanism towards the other end in the width direction of the drilling platform, the longitudinal limiting mechanism comprises a supporting frame which is fixedly connected with the tops of the corresponding fixed clamping plates and has an 'shaped' section, a horizontal section of the supporting frame is vertically and fixedly provided with a first hydraulic cylinder, a piston rod of the first hydraulic cylinder faces downwards and is fixedly connected with a first movable clamping plate, one end, close to the supporting frame, of the first movable clamping plate is vertically and slidably connected with a vertical section of the supporting frame and the corresponding fixed clamping plate, the other end in the width direction of the drilling platform is provided with a transverse limiting mechanism corresponding to the positions of the two, the fixed second pneumatic cylinder that is equipped with of level in the backup pad, the piston rod of second pneumatic cylinder moves the splint towards corresponding fixed splint place direction and fixedly connected with second, splint bottom horizontal sliding connection is moved to the second on drilling platform.

Preferably, a gap exists between the two fixed clamping plates, a drilling template is arranged in the gap, two ends of the drilling template are detachably connected with the corresponding ends of the fixed clamping plates, and a die hole penetrates through the drilling template along the width direction of the drilling platform.

Preferably, the two fixed clamping plates are provided with slots at the end faces opposite to each other, the two ends of the drilling template are provided with insertion parts matched with the slots, and the drilling template is connected with the slots of the corresponding fixed clamping plates in an insertion manner through the insertion parts at the two ends.

Preferably, the two fixed clamping plates, the two longitudinal limiting mechanisms and the two transverse limiting mechanisms are symmetrically arranged on the central axis of the die hole.

Preferably, a first sliding groove is vertically arranged on the vertical section of the supporting frame, the first sliding groove extends downwards to the lower part of the corresponding fixed clamping plate, a first sliding block matched with the first sliding groove is arranged at one end, close to the vertical section of the supporting frame, of the first movable clamping plate, and the first movable clamping plate is connected to the first sliding groove in a sliding mode through the first sliding block; the drilling platform is provided with a second sliding groove along the width direction of the drilling platform corresponding to the position of the second movable clamping plate, the bottom end of the second movable clamping plate is provided with a second sliding block matched with the second sliding groove, and the second movable clamping plate is connected to the second sliding groove through the second sliding block in a sliding mode.

Preferably, the first sliding groove and the second sliding groove are both T-shaped grooves, and small-diameter ends of the T-shaped grooves face the direction of the corresponding movable clamping plate and are opened.

Preferably, the lower surface of the first movable clamping plate and the surface of the second movable clamping plate, which is close to the fixed clamping plate, are both provided with rubber pads, and the end face, far away from the corresponding movable clamping plate, of each rubber pad is in a sawtooth shape.

Preferably, a plurality of rolling mechanisms are arranged on the drilling platform between the transverse limiting mechanism and the fixed clamping plate, and the rolling mechanisms are distributed at intervals along the length direction of the drilling platform and staggered with the second sliding groove.

Preferably, the rolling mechanism comprises a groove formed in the width direction of the drilling platform, a rotating roller is arranged in the groove along the length direction of the groove, the two ends of the rotating roller are rotatably connected to the inner wall of the corresponding groove, and the top of the rotating roller extends to the outside of the groove.

The utility model has the advantages that: the utility model has reasonable design, simple structure, two sets of symmetrical longitudinal limiting mechanisms can compress and limit the two ends of the end beam drilling position from the vertical direction, two sets of symmetrical transverse limiting mechanisms can compress and limit the two ends of the end beam drilling position from the horizontal direction, the comprehensive clamping and limiting effects on the end beam are ensured, and the longitudinal limiting mechanisms and the transverse limiting mechanisms adopt hydraulic cylinders to provide pressing force, on one hand, the pressing force on the end beam can be ensured to be uniformly distributed and firmly acted, thereby the problem that the drilling quality is reduced due to the position deviation of the end beam in the drilling process is avoided, the drilling processing quality of the end beam is improved, on the other hand, the use is more convenient, the problems of complex operation and low efficiency of the original screw type clamping mechanism can be avoided, meanwhile, the telescopic adjustment range of the hydraulic cylinder is larger, the clamping and the limiting effects on end beam workpieces with different specifications can be matched, the drilling requirements of end beam workpieces of different specifications and sizes are met, the application range of the whole drilling equipment can be enlarged, and the use flexibility and convenience of the device are greatly improved. In addition, the two groups of longitudinal limiting mechanisms and the two groups of transverse limiting mechanisms are respectively arranged on the two sides of the drilling template, so that the positioning of the punching position on the end beam is more convenient on the premise of ensuring the end beam to be limited and clamped stably, the subsequent drilling operation is not hindered, and the processing difficulty is reduced; the rubber pads with the sawtooth surfaces on the movable clamping plates corresponding to the limiting mechanisms can play a role in buffering, avoid the phenomenon that the surface of the end beam is damaged due to overlarge pressing force, increase friction force and further improve the stability of the pressing effect on the end beam.

Drilling template and the setting of the nib on it, the cooperation of being more convenient for is to the location of the processing position in corresponding hole on the end beam, ensures to fix a position accurately, during the use, only needs to set up corresponding drilling mechanism who has the drill bit in one side that fixed splint was kept away from to drilling template, alright cooperation is carried out the drilling operation, and the nib still can punch the drill bit spacing during drilling, can further improve the positioning accuracy and the processingquality in hole, guarantees the finished product quality of hoist.

The arrangement of the rolling mechanism on the drilling platform is more convenient for the loading and unloading and the back and forth movement positioning of the end beam on the drilling platform, the labor intensity of workers is reduced, time and labor are saved, and the whole drilling efficiency can be further improved.

Drawings

Fig. 1 is a schematic top view of the present invention;

fig. 2 is a left side view structure diagram of the present invention;

fig. 3 is a schematic front view of the present invention;

fig. 4 is a schematic top view of the longitudinal limiting mechanism of the present invention;

fig. 5 is a left side view structure diagram of the rolling mechanism of the present invention.

Reference numbers in the figures: the drilling platform is 1, 2 is the fixed splint, 3 is vertical stop gear, 4 is rolling mechanism, 5 is horizontal stop gear, 6 is the slot, 7 is grafting portion, 8 is the nib, 9 is the drilling template, 10 is the support frame, 11 is first pneumatic cylinder, 12 is the recess, 13 is the live-rollers, 14 is the second pneumatic cylinder, 15 is the backup pad, 16 is first spout, 17 is first slider, 18 is first movable clamp plate, 19 is the rubber pad, 20 is second movable clamp plate, 21 is the second spout, 22 is the second slider.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 5, a crane beam plate drilling clamping device comprises a drilling platform 1, wherein two fixed clamping plates 2 are fixedly arranged at one end of the drilling platform 1 in the width direction side by side along the length direction of the drilling platform for positioning and clamping limit of an end beam workpiece in a matching manner. Two 2 tops of deciding splint all are equipped with vertical stop gear 3 towards the ascending other end of 1 width direction of drilling platform, vertical stop gear 3 includes that fixed connection is the support frame 10 of "shape" at the corresponding cross-section of deciding splint 2 top, vertical fixed being equipped with first pneumatic cylinder 11 on the horizontal segment of support frame 10, the piston rod of first pneumatic cylinder 11 is down and the first movable clamp plate 18 of fixedly connected with, during the use, the extension of the piston rod through first pneumatic cylinder 11 can drive first movable clamp plate 18 and move down, and then compress tightly first movable clamp plate 18 at the top of end beam work piece, with the ascending degree of freedom of restriction end beam work piece vertical side. The one end that first movable clamp plate 18 is close to support frame 10 is sliding connection from top to bottom on the vertical section of support frame 10 and corresponding solid fixed splint 2 for to the up-and-down motion of first movable clamp plate 18 guide and spacing, keep the steady of its motion, make the tight spacing smooth stable progress of clamp to the end beam. The other end on the 2 width direction of drilling platform corresponds two vertical stop gear 3's position department and all is equipped with horizontal stop gear 5, and horizontal stop gear 5 includes the backup pad 15 of vertical setting, and the fixed second pneumatic cylinder 14 that is equipped with of backup pad 15 upper level, and splint 20 is moved to the corresponding fixed splint 2 place orientation of piston rod orientation of second pneumatic cylinder 14 and fixedly connected with second. When the end beam workpiece clamping device is used, the second movable clamping plate 20 can be driven to horizontally move towards the direction of the fixed clamping plate 2 by extending the piston rod of the second hydraulic cylinder 14, and then the second movable clamping plate 20 is pressed on the side part of the end beam workpiece to limit the degree of freedom of the end beam workpiece in the horizontal direction. The horizontal sliding connection of splint 20 bottom is moved to the second on drilling platform 1 for move the horizontal migration motion of splint 20 and lead and spacing to the second, keep the steady of its motion, make the tight spacing smooth stable progress of clamp to the end beam. To sum up, the two sets of longitudinal limiting mechanisms 3 can be used for compressing and limiting two ends of the drilling position of the end beam from the vertical direction, the two sets of transverse limiting mechanisms 5 can be used for compressing and limiting two ends of the drilling position of the end beam from the horizontal direction, so that the comprehensive clamping and limiting effects on the end beam are ensured, the longitudinal limiting mechanisms 3 and the transverse limiting mechanisms 5 both adopt hydraulic cylinders to provide pressing force, on one hand, the pressing force on the end beam can be ensured to be uniformly distributed and firmly acted, the problem that the drilling quality is reduced due to the position deviation of the end beam in the drilling process is avoided, the drilling processing quality of the end beam is improved, on the other hand, the use is more convenient, the problems of complicated operation and low efficiency of the original screw type clamping mechanism can be avoided, meanwhile, the telescopic adjustment range of the hydraulic cylinders is larger, and the clamping and limiting effects on end beam, the drilling requirements of end beam workpieces of different specifications and sizes are met, the application range of the whole drilling equipment can be expanded, and the use flexibility and convenience of the device are greatly improved.

In this embodiment, there is the clearance and is equipped with drilling template 9 in this clearance between two fixed splint 2, drilling template 9 both ends and corresponding fixed splint 2 tip can be dismantled to be connected and this drilling template 9 goes up and runs through and be equipped with nib 8 along drilling platform 1's width direction, the cooperation of being more convenient for is to the location of the machined position in corresponding hole on the end beam, it is accurate to ensure to fix a position, in use, only need set up corresponding drilling mechanism (not drawn in the picture) that has the detachable drill bit in one side that fixed splint 2 was kept away from to drilling template 9, alright cooperation is carried out the drilling operation, and die 8 still can punch to the drill bit spacing during drilling, can further improve the positioning accuracy and the processingquality in hole, guarantee the finished product quality of hoist. During actual operation, only need earlier with the supporting drill bit on the drilling mechanism with the die hole 8 centering, when carrying out the drilling operation in the hole of same size and height on same end roof beam or different end roof beams like this, just need not the height of readjustment drill bit, only need the round trip movement end roof beam transform punch the position can, the operation is simple more convenient, fixes a position more accurately, efficiency is higher. The detachable connection of the drilling template 9 and the fixed clamping plate 2 is as follows: all be equipped with slot 6 on the relative one end terminal surface of two fixed splint 2, the drilling template 9 both ends all are equipped with the grafting portion 7 with slot 6 looks adaptation for the grafting portion 7 at 9 accessible both ends of drilling template links to each other with the corresponding 6 grafting of fixed splint 2, thereby makes things convenient for the dismouting of drilling template 9, is convenient for cooperate actual drilling demand to change different drilling template 9, accomplishes the processing demand in not unidimensional and/or not hole of co-altitude. During the in-service use, the drilling template 9 and the nib 8 thereon need prefabricate as required earlier, set up a nib 8 on the drilling template 9 under the general condition, but if there are the height in the hole that two or more than two need process not conflict completely, corresponding nib 8 also can be processed on same drilling template 9 according to actual conditions, in order to practice thrift drilling template 9's consumptive material, and therefore, the production cost is reduced, when processing corresponding not co-altitude hole, just need not to change drilling template 9, only need readjust the turn round on the corresponding drilling mechanism can, the operation is more convenient.

In this embodiment, the two fixed clamping plates 2, the two longitudinal limiting mechanisms 3 and the two transverse limiting mechanisms 5 are symmetrically arranged along the central axis of the die hole 8, so that the clamping action applied to the end beams on the two sides of the drilling position is distributed uniformly, the clamping and limiting stability is ensured, and the influence on the drilling quality due to the deviation of the workpiece in the drilling process is avoided. Simultaneously, locate drilling template 9 both sides respectively with two sets of vertical stop gear 3 and two sets of horizontal stop gear 5, can guarantee to the spacing tight firm prerequisite of clamp of end beam under, be more convenient for carry on the location of the position of punching on the end beam, and do not hinder subsequent drilling operation, reduce the processing degree of difficulty.

In this embodiment, the sliding connection between the first movable clamp plate 2 and the support frame 10 and the fixed clamp plate 2 is specifically as follows: the vertical first spout 16 that is equipped with on the vertical section of support frame 10, first spout 16 downwardly extending to corresponding 2 lower parts of fixed splint, the first splint 17 that moves that one of 18 is close to the vertical section of support frame 10 serves and is equipped with the first slider 17 with 16 looks adaptations of first spout for first 18 accessible first slider 17 sliding connection that move moves is on first spout 16, be used for leading and spacing the up-and-down motion of first splint 18 that moves, guarantee that vertical direction's compressing tightly goes on smoothly. The sliding connection between the second movable clamping plate 20 and the drilling platform 1 is specifically as follows: the position department that moves splint 20 corresponding to the second on drilling platform 1 is equipped with second spout 21 along its width direction, and splint 20 bottom is moved to the second is equipped with the second slider 22 with second spout 21 looks adaptation for splint 20 accessible second slider 22 sliding connection is moved to the second on second spout 21, is used for moving the horizontal migration motion of splint 20 to the second and leads and spacing, guarantees that horizontal direction's compressing tightly goes on smoothly. The first sliding groove 16 and the second sliding groove 21 are both T-shaped grooves, and the small-diameter ends of the T-shaped grooves face the direction of the corresponding movable clamping plate and are opened, so that the sliding grooves are in sliding connection with the corresponding sliding blocks in a matched manner, and stable connection and no falling are guaranteed.

In this embodiment, the lower surface of the first movable clamping plate 18 and the surface of the second movable clamping plate 20 close to the fixed clamping plate 2 are both provided with rubber pads 19, and the end faces of the rubber pads 19 far away from the corresponding movable clamping plates are in a zigzag shape, so that a buffering effect can be achieved, the surface of the end beam is prevented from being damaged due to excessive pressing force, friction can be increased, the stability of the pressing effect on the end beam is further improved, and the drilling quality is ensured.

In this embodiment, be equipped with a plurality of rolling mechanism 4 on the drilling platform 1 between horizontal stop gear 5 and the fixed splint 2, rolling mechanism 4 along drilling platform 1's length direction interval distribution and stagger with the position of second spout 21, can be more convenient for end beam upper and lower unloading and the round trip movement location on drilling platform 1, reduce staff intensity of labour, labour saving and time saving can further improve holistic drilling efficiency. The rolling mechanism 4 specifically comprises a groove 12 formed in the width direction of the drilling platform 1, a rotating roller 13 is arranged in the groove 12 along the length direction of the groove, two ends of the rotating roller 13 are rotatably connected to the inner wall of the corresponding groove 12, and the top of the rotating roller 13 extends to the outside of the groove 12. When the end beam moves on the drilling platform 1, the original sliding friction can be converted into rolling friction through the rotation of the rotating roller 13, so that the end beam can move more easily, the labor intensity of workers is reduced, the positioning operation difficulty is reduced, and the overall drilling efficiency is further improved.

The utility model discloses a theory of operation: the utility model discloses when using, insert two between the splint 2 surely with the drilling template 9 at the nib 8 place of the required hole looks adaptation of end beam earlier to the high position of the last supporting drill bit of drilling mechanism is adjusted, makes its coaxial correspondence with the nib 8 on the drilling template 9. And then, placing the end beam to be drilled on the rolling mechanism 4 of the drilling platform 1, marking the position of a hole to be machined on the end beam in advance, moving the end beam back and forth, and accurately centering the punching mark corresponding to the die hole 8 with the die hole 8 to complete the positioning of the end beam. Then, the first hydraulic cylinder 11 and the second hydraulic cylinder 14 are operated, the piston rod of the first hydraulic cylinder 11 extends and pushes the first movable clamping plate 18 to move downwards along the first sliding groove 16, so that the first movable clamping plate 18 is pressed at the top of the end beam, the piston rod of the second hydraulic cylinder 14 extends and pushes the second movable clamping plate 20 to move transversely along the second sliding groove 21, so that the second movable clamping plate 20 is pressed at the side part of the end beam, through the cooperation of the longitudinal limiting mechanism 3 and the transverse limiting mechanism 5, two ends of the punching position of the end beam can be simultaneously pressed and fixed in the vertical direction and the horizontal direction, the clamping force is ensured to be uniformly distributed and firmly acted, the drilling operation of the drilling position is not hindered, the displacement of the end beam in the drilling process can be avoided, the drilling precision is ensured, and the drilling quality is improved. If the drilling position is deviated from one end part of the end beam, and the length of the drilling platform 1 is limited, and the end beam cannot be supported in a balanced and stable manner, the existing additional supporting part can be added below the other end of the end beam to perform auxiliary support, so that the smooth drilling operation of the end beam is ensured. After the end beam is clamped and limited, the corresponding drilling mechanism can be started to drill the end beam, and the positioning and limiting of the die holes 8 on the drilling template 9 are matched, so that the positioning precision and the processing quality of the holes can be greatly improved, and the quality of finished products of the whole crane is ensured. When the drilling operation of the holes with the same size and height on the same end beam or different end beams is performed, the sizes and the heights of the corresponding die holes 8 and the drill bits are unchanged, the drilling template 9 does not need to be replaced during drilling, the height of the drill bit does not need to be readjusted, the end beams only need to be repositioned and clamped, the operation is simple and convenient, and the efficiency is higher. If the size and/or height of the hole to be processed changes, the drilling template 9 corresponding to the die hole 8 needs to be replaced, and the height of the drill bit needs to be adjusted again and/or the drill bit with the corresponding size needs to be replaced so as to match the drilling operation.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A drilling and clamping device for a beam plate of a crane is characterized by comprising a drilling platform, wherein two fixed clamping plates are fixedly arranged at one end of the drilling platform in the width direction side by side along the length direction of the drilling platform, the tops of the two fixed clamping plates are respectively provided with a longitudinal limiting mechanism towards the other end of the drilling platform in the width direction, each longitudinal limiting mechanism comprises a support frame which is fixedly connected to the top of the corresponding fixed clamping plate and has an 'L' -shaped cross section, a horizontal section of the support frame is vertically and fixedly provided with a first hydraulic cylinder, a piston rod of the first hydraulic cylinder faces downwards and is fixedly connected with a first movable clamping plate, one end of the first movable clamping plate, which is close to the support frame, is vertically and slidably connected to the vertical section of the support frame and the corresponding fixed clamping plate, the positions, corresponding to the two longitudinal limiting mechanisms, of the other end of the drilling platform in the width, the fixed second pneumatic cylinder that is equipped with of level in the backup pad, the piston rod of second pneumatic cylinder moves the splint towards corresponding fixed splint place direction and fixedly connected with second, splint bottom horizontal sliding connection is moved to the second on drilling platform.

2. The drilling and clamping device for the beam plate of the crane as claimed in claim 1, wherein a gap exists between the two fixed clamping plates, a drilling template is arranged in the gap, two ends of the drilling template are detachably connected with the corresponding ends of the fixed clamping plates, and a die hole penetrates through the drilling template along the width direction of the drilling platform.

3. The drilling and clamping device for the beam plate of the crane as claimed in claim 2, wherein the two fixed clamping plates are provided with slots at the end faces at the opposite ends, the drilling template is provided with insertion parts at the two ends, the insertion parts are matched with the slots, and the drilling template is connected with the slots of the corresponding fixed clamping plates in an insertion manner through the insertion parts at the two ends.

4. The drilling and clamping device for the beam plate of the crane as claimed in claim 2, wherein the two fixed clamping plates, the two longitudinal limiting mechanisms and the two transverse limiting mechanisms are symmetrically arranged around the central axis of the die hole.

5. The drilling and clamping device for the beam plate of the crane as claimed in claim 1, wherein a first sliding groove is vertically arranged on the vertical section of the supporting frame, the first sliding groove extends downwards to the lower part of the corresponding fixed clamping plate, a first sliding block matched with the first sliding groove is arranged at one end of the first movable clamping plate close to the vertical section of the supporting frame, and the first movable clamping plate is slidably connected to the first sliding groove through the first sliding block; the drilling platform is provided with a second sliding groove along the width direction of the drilling platform corresponding to the position of the second movable clamping plate, the bottom end of the second movable clamping plate is provided with a second sliding block matched with the second sliding groove, and the second movable clamping plate is connected to the second sliding groove through the second sliding block in a sliding mode.

6. The drilling and clamping device for the beam plate of the crane as claimed in claim 5, wherein the first sliding groove and the second sliding groove are both T-shaped grooves, and the small-diameter ends of the T-shaped grooves face the direction of the corresponding movable clamping plates and are open.

7. The drilling and clamping device for the beam plate of the crane as claimed in claim 1, wherein the lower surface of the first movable clamping plate and the surface of the second movable clamping plate close to the fixed clamping plate are both provided with rubber pads, and the end surfaces of the rubber pads far away from the corresponding movable clamping plates are in a sawtooth shape.

8. The drilling and clamping device for the beam plate of the crane as claimed in claim 5, wherein a plurality of rolling mechanisms are arranged on the drilling platform between the transverse limiting mechanism and the fixed clamping plate, and the rolling mechanisms are distributed at intervals along the length direction of the drilling platform and are staggered with the position of the second sliding groove.

9. The drilling and clamping device for the beam plate of the crane as claimed in claim 8, wherein the rolling mechanism comprises a groove formed along the width direction of the drilling platform, a rotating roller is arranged in the groove along the length direction of the groove, both ends of the rotating roller are rotatably connected to the inner wall of the corresponding groove, and the top of the rotating roller extends to the outside of the groove.