CN215629494U - Support for bridge demolition - Google Patents

Abstract

The utility model relates to a bridge is demolishd and is used support, it relates to the bridge construction and demolishs the field, and it includes the steelframe, still includes the bottom plate, the steelframe top is equipped with the bearing support that is used for supporting bridge bent cap die block, the bottom plate sets up in the steelframe bottom, be equipped with a plurality of anchor subassemblies that are used for fixing the bottom plate on river bed soil layer on the bottom plate, the anchor subassembly includes anchor post and a plurality of stock, the anchor post slides and connects on the bottom plate, be equipped with the holding tank in the anchor post, the cell wall of holding tank is equipped with the extension groove with a plurality of stock one-to-ones, the stock slides and sets up in the extension groove, be equipped with in the holding tank and be used for driving the stock to stretch out the outer driving piece of anchor post lateral wall by the extension groove. This application has the effect that improves the problem that operation platform has the settlement risk in the work progress.

Description

Support for bridge demolition

Technical Field

The application relates to the field of bridge structure demolition, in particular to a support for bridge demolition.

Background

Bridge demolition can be divided into two major categories, namely blasting demolition and mechanical (non-blasting) demolition, each category also comprises a plurality of different applications, and the categories have respective application ranges. The mechanical dismantling method is to dismantle the bridge in the forms of crushing, dividing, hoisting and the like by using mechanical equipment.

The bridge capping beam bottom die generally uses a shaping steel template, and the bottom die structure comprises a bridge capping beam bottom die, a bottom die I-steel distribution beam and a bottom die bearing carrying pole beam, and the total weight of the bridge capping beam bottom die, the bottom die I-steel distribution beam and the bottom die bearing carrying pole beam is larger. The bridge capping beam bottom die, the bottom die I-steel distribution beam and the bottom die bearing carrying pole beam need to be detached independently, and in the detaching method in the related technology, an operating platform with the same height as the bottom die needs to be erected and detached piece by piece in cooperation with a crane.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when a bridge on a river channel needs to be dismantled, an operation platform needs to be erected on the river channel, and the operation platform needs to bear the weight of a bridge capping beam bottom die, a bottom die I-steel distribution beam and a bottom die bearing shoulder pole beam, so that the risk of settlement is caused, and the safety of bridge dismantling operation is influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that operation platform in the work progress has the risk of subsiding, this application provides a bridge is demolishd and is used support.

The application provides a bridge demolishs and uses support adopts following technical scheme:

the utility model provides a bridge is demolishd and is used support, includes the steelframe, still includes the bottom plate, the steelframe top is equipped with the bearing support that is used for supporting bridge bent cap die block, the bottom plate sets up in the steelframe bottom, be equipped with a plurality of anchor subassemblies that are used for fixing the bottom plate on river bed soil layer on the bottom plate, the anchor subassembly includes anchor post and a plurality of stock, the anchor post slides and connects on the bottom plate, be equipped with the holding tank in the anchor post, the cell wall of holding tank is equipped with the extension groove with a plurality of stock one-to-ones, the stock slides and sets up in the extension groove, be equipped with in the holding tank and be used for driving the stock to stretch out the outer driving piece of anchor post lateral wall by the extension groove.

By adopting the technical scheme, the bearing support, the steel frame and the bottom plate are utilized to support the bridge capping beam bottom die support, so that the safety of the bridge capping beam bottom die during dismantling is improved; the anchor posts are nailed into the hard soil layer of the river bottom, so that the loose soil below the bottom plate is compacted, and the problem of settlement risk after the bearing support bears the weight in the construction process is solved. Utilize the driving piece drive stock to stretch out outside the lateral wall of anchor post by the extending groove simultaneously to tamp the earth in the anchor post outside, and strengthened the frictional force between anchor post and the earth, realized the fixed connection between bottom plate and the river bed soil layer, make the bearing support to bridge bent cap die block outrigger, improved the stability in the work progress.

Optionally, the driving piece includes the drive post, the drive post is inserted and is established in the holding tank, be equipped with a plurality of recesses on the lateral wall of drive post, it is a plurality of the recess respectively with a plurality of extending groove one-to-one, be equipped with the packing block in the recess, the side that the packing block is close to the holding tank cell wall is established to the inclined plane, the packing block is located and is equipped with the dovetail on the lateral wall on inclined plane, the one end of stock be equipped with dovetail matched with forked tail piece.

By adopting the technical scheme, the dovetail block on the anchor rod is matched with the dovetail groove on the filling block, and the dovetail groove is arranged on the inclined surface of the filling block, so that when the driving column moves towards the accommodating groove, the anchor rod extends out of the side wall of the anchor column and is inserted into the river bottom soil layer, and the connection strength between the anchor column and the river bottom soil layer is favorably improved; when the drive post moved to the holding tank outward, the stock was in the lateral wall of anchor post withdrawal, was favorable to making things convenient for the dismouting of anchor post on the bottom plate this moment, labour saving and time saving.

Optionally, a sliding hole for the anchor post to pass through is formed in the bottom plate, a flange is arranged on the peripheral wall of the anchor post, and the bottom wall of the flange is abutted to the top wall of the bottom plate.

By adopting the technical scheme, the arrangement of the sliding holes realizes the detachable connection between the anchor post and the bottom plate, and the anchor post is conveniently inserted into the bottom soil layer of the river; because the anchor post is inserted in the river bottom soil layer, the bottom plate is clamped between the flange and the river bottom soil layer by the flange, and the bottom plate is fixed.

Optionally, a lifting assembly for driving the driving column to lift is arranged on the flange, the lifting assembly comprises an installation support, a first connecting rod and a second connecting rod, the installation support is fixedly connected to the top wall of the flange, the first connecting rod is rotatably connected with the second connecting rod, one end of the first connecting rod is hinged with a first sliding block, the other end of the first connecting rod is hinged with a first connecting block, one end of the second connecting rod is hinged with a second sliding block, the other end of the second connecting rod is hinged with a second connecting block, the side wall of the mounting support facing the driving column is provided with a slide rail, the first sliding block and the second sliding block are connected on the sliding rail in a sliding way, the side wall of the driving column close to the notch of the accommodating groove is provided with a connecting rail, the first connecting block and the second connecting block are connected to the connecting rail in a sliding mode, and the mounting support is provided with a pushing piece used for driving the first connecting rod and the second connecting rod to rotate relatively.

By adopting the technical scheme, when the anchor rod needs to penetrate out of the anchor column, the lever principle is utilized, the first connecting rod and the second connecting rod are relatively rotated through the pushing piece, and when the first connecting rod and the second connecting rod are close to each other, the first connecting block and the second connecting block slide on the connecting rail and are close to each other, so that the driving column slides towards the accommodating groove; on the contrary, similarly, when the first connecting rod and the second connecting rod are far away from each other, the driving column slides outwards the accommodating groove; adopt the lift mode that above-mentioned structure constitutes, conveniently drive the drive post and go up and down in the holding tank to drive post drive stock slides in the extension tank.

Optionally, the pushing member includes a screw rod, two pushing blocks and a nut, the screw rod is connected to the side wall of the mounting support in a sliding manner, one end of the screw rod is hinged to the pushing block, the side wall of the pushing block, which faces away from the screw rod, abuts against the side wall of the first connecting rod or the second connecting rod, the other end of the screw rod penetrates through the side wall of the mounting support, the nut is connected to the side wall of the mounting support in a rotating manner, the screw rod is connected with the nut in a threaded manner, the two pushing blocks are provided with two groups, the two groups of pushing blocks in the pushing member abut against the first connecting rod and the second connecting rod respectively, and a spring is arranged between the opposite side walls of the first connecting rod and the second connecting rod.

By adopting the technical scheme, when the first connecting rod and the second connecting rod need to be mutually close, the nut is screwed, the screw rod moves towards the inside of the mounting support at the moment, the pushing blocks on the screw rod synchronously slide along with the sliding of the screw rod, and the first connecting rod and the second connecting rod are pushed to be mutually close by the two pushing blocks at the moment; when the first connecting rod and the second connecting rod need to be far away from each other, the nut is screwed, so that the screw rod moves outwards towards the mounting support, the pushing block is far away from the first connecting rod or the second connecting rod, and at the moment, the first connecting rod and the second connecting rod relatively rotate under the elastic action of the spring and are far away from each other. By adopting the pushing mode, the distance between the first connecting rod and the second connecting rod can be adjusted, and the operation of personnel is facilitated.

Optionally, the bearing support includes two relative H shaped steel that set up on the steelframe, two be equipped with a plurality of I-steel between the relative lateral wall of H shaped steel, it is a plurality of the I-steel flushes towards the airfoil of bridge bent cap die block and the airfoil of two H shaped steel towards bridge bent cap die blocks.

Through adopting above-mentioned technical scheme, utilize H shaped steel and a plurality of I-steel to cooperate, be favorable to the homodisperse to need the gravity to bridge bent cap die block bearing, improved the stability of bearing.

Optionally, a plurality of buffer blocks are arranged on the wing surface of the I-shaped steel facing the bridge cover beam bottom die, and the buffer blocks are abutted to the bridge cover beam bottom die.

Through adopting above-mentioned technical scheme, after the bridge bent cap die block was cut, the bridge bent cap die block fell on the bearing support, utilizes a plurality of buffer blocks to cushion the bridge bent cap die block, is favorable to reducing the impact force of the gravity of bridge bent cap die block to the steelframe.

Optionally, a plurality of jacks are arranged on the steel frame, and supporting heads of the jacks are abutted to the wing surfaces of the H-shaped steel back-to-back bridge capping beam bottom die.

Through adopting above-mentioned technical scheme, utilize the support head of jack to carry out the bearing to H shaped steel, realized the regulation to the bearing support height for the bearing support realizes carrying out the bearing to the bridge of co-altitude not, and application scope is wide.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the anchor post is used for fixing the bottom plate on the river bottom soil layer, and the driving piece is used for extending the anchor rod out of the anchor post, so that the connection strength between the anchor post and the river bottom soil layer is increased, the settlement of the bearing support is reduced, and the safety of bridge dismantling operation is improved;

2. the jack is matched with the H-shaped steel, so that the supporting height of the bearing support to the bridge bent cap bottom die can be adjusted within a certain height range, and the application range is wide.

Drawings

Fig. 1 is a schematic overall structure diagram of a bridge demolition support in an embodiment of the present application.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic view of the overall structure of the lifting assembly in the embodiment of the present application.

Fig. 4 is a schematic sectional view of the plane a-a in fig. 3.

FIG. 5 is a schematic view of the overall structure of a support pedestal according to an embodiment of the present invention.

Fig. 6 is an enlarged view at B in fig. 5.

Description of reference numerals: 1. a steel frame; 2. a base plate; 3. an anchor assembly; 31. an anchor post; 32. an anchor rod; 4. accommodating grooves; 5. an extension groove; 6. a drive column; 7. a groove; 8. filling blocks; 9. a dovetail groove; 10. a dovetail block; 11. a bridge capping beam bottom die; 12. supporting a support; 121. h-shaped steel; 122. i-shaped steel; 13. a jack; 14. a flange; 15. a lifting assembly; 151. mounting a support; 152. a first link; 153. a second link; 16. a first slider; 17. a second slider; 18. a slide rail; 19. a first connection block; 20. a second connecting block; 21. connecting rails; 22. a pushing member; 221. pushing the block; 222. a screw; 223. a nut; 23. a spring; 24. and a buffer block.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a support for bridge demolition.

Referring to fig. 1 and 2, the support for bridge dismantling comprises a steel frame 1 and a bottom plate 2, the bottom plate 2 is horizontally arranged, the steel frame 1 is fixedly arranged on the top wall of the bottom plate 2, a bearing support 12 used for supporting a bridge capping bottom die 11 is arranged at the top of the steel frame 1, and a plurality of anchoring assemblies 3 used for fixing the bottom plate 2 on a river bed soil layer are arranged on the bottom plate 2.

Referring to fig. 1, 3 and 4, one group of anchor assemblies 3 includes anchor post 31 and a plurality of stock 32, and anchor post 31 slides and connects on bottom plate 2, and anchor post 31 is all vertical setting, and the longitudinal section of anchor post 31 bottom is the toper setting, is convenient for insert anchor post 31 in the river bed soil layer. A plurality of stock 32 all inclines to set up, a plurality of stock 32 are arranged along the circumferencial direction equidistant of anchor post 31, a plurality of stock 32 constitutes the pole group, a plurality of pole groups are arranged along the axial equidistant of stock 32, be equipped with a plurality of extending groove 5 on the anchor post 31, a plurality of extending groove 5 and a plurality of stock 32 one-to-one, the stock 32 slides and connects in extending groove 5, holding tank 4 with 5 intercommunications in extending groove is seted up to the roof of anchor post 31, 4 interpolations of holding tank are equipped with and are used for driving stock 32 to stretch out or the driving piece of withdrawing from extending groove 5.

When the supporting support is used, the driving piece is utilized to drive the anchor rod 32 to extend out of the side wall of the anchor column 31, the contact area between the anchor column 31 and a river bottom soil layer is increased, the stability of inserting the anchor column 31 in a river levee soil layer is enhanced, and the risk of settlement of the supporting support 12 is reduced.

And finally, the bridge capping beam bottom die 11 needing to be dismantled is supported through the steel frame 1 and the bearing support 12, so that the bridge capping beam bottom die 11 is favorably supported when being cut, and the safety of operation is improved.

Utilize steelframe 1 and bearing support 12 to support the bridge bent cap die block 11 that needs demolishd, utilize anchor post 31 and stock 32 to fix bottom plate 2, the workman convenient operation of being convenient for is swift, utilizes the stock 32 that stretches out in the 5 follow extension tanks, has strengthened the joint strength between anchor post 31 and the river bed soil layer, avoids bottom plate 2 to take place to subside because of undertaking steelframe 1, bearing support 12 and 11 overweight emergence of bridge bent cap die block as far as possible.

Referring to fig. 1, 2 and 3, in the present embodiment, four corners of the bottom plate 2 are provided with sliding holes, and the four sliding holes are in one-to-one correspondence and sliding fit with the four anchor posts 31 respectively. The circumferential wall of the anchor post 31 is fixedly provided with an annular flange 14, the bottom surface of the flange 14 is abutted against the top surface of the bottom plate 2, and the bottom plate 2 is favorably fixed on the river bottom soil layer by the cooperation of the flange 14 and the anchor post 31.

Referring to fig. 4, the driving piece includes driving column 6 arranged in holding tank 4, driving column 6 and anchor post 31 are arranged coaxially, a plurality of grooves 7 are arranged on the circumferential wall of driving column 6, a plurality of grooves 7 respectively correspond to a plurality of extension grooves 5 one-to-one, filling blocks 8 are arranged on the groove walls of grooves 7, the side walls of filling blocks 8 close to the groove walls of holding tank 4 are inclined planes, and the longitudinal sectional areas of filling blocks 8 are gradually increased from low to high along the height direction of anchor post 31.

In this embodiment, one end of the anchor rod 32 extends out of the side wall of the anchor column 31, the other end of the anchor rod 32 extends into the groove 7 and is fixedly welded with the dovetail block 10, and the dovetail groove 9 for sliding the dovetail block 10 is formed in the side wall of the inclined plane of the filling block 8.

The dovetail block 10 and the dovetail groove 9 are matched in a sliding mode, so that the anchor rod 32 slides along with the sliding of the dovetail block 10, when the driving column 6 moves downwards in the accommodating groove 4, the anchor rod 32 slides in the extension groove 5, and the anchor rod 32 extends out of the anchor column 31; when the drive post 6 moves up in the receiving slot 4, the anchor bar 32 slides in the extension slot 5, thereby enabling the anchor bar 32 to be retracted into the anchor post 31.

Referring to fig. 3 and 4, a lifting assembly 15 for driving the driving column 6 to lift is arranged on the flange 14, the lifting assembly 15 includes an installation support 151, a first connecting rod 152 and a second connecting rod 153, the installation support 151 is in an "Jiong" shape, a horizontal side wall of the installation support 151 is located above the driving column 6, two vertical side walls of the installation support 151 are fixedly welded on a top wall of the flange 14, a sliding rail 18 is fixedly connected to the horizontal side wall of the installation support 151 facing the driving column 6, a first sliding block 16 and a second sliding block 17 are slidably connected to the sliding rail 18, one end of the first sliding block 16 is hinged to one end of the first connecting rod 152, and one end of the second sliding block 17 is hinged to one end of the second connecting rod 153.

The top wall of the driving column 6 facing the mounting support 151 is fixedly connected with a connecting rail 21, the connecting rail 21 and the sliding rail 18 are arranged oppositely and parallel to each other, the connecting rail 21 is provided with a first connecting block 19 and a second connecting block 20 in a sliding connection mode, one end, away from the first sliding block 16, of the first connecting block 19 and one end, away from the second sliding block 17, of the first connecting block 152 is hinged to one end, away from the second sliding block 17, of the second connecting block 20 and one end, away from the second sliding block 17, of the second connecting block 153 are hinged to each other, the opposite side walls of the first connecting block 152 and the second connecting block 153 are connected in a rotating mode through a rotating shaft, the first connecting block 152 and the second connecting block 153 are combined to form an X shape, and the distance between the rotating shaft and the sliding rail 18 is smaller than the distance between the rotating shaft and the connecting rail 21. The mounting support 151 is provided with a pushing member 22 for driving the first link 152 and the second link 153 to rotate relatively.

When the pushing member 22 is used to drive the first connecting rod 152 and the second connecting rod 153 to approach each other, the first connecting block 19 and the second connecting block 20 slide on the connecting rail 21 and approach each other by using the lever principle, and then the first connecting block 19 and the second connecting block 20 drive the driving column 6 fixedly connected with the connecting rail 21 to move toward the bottom of the accommodating groove 4. The anchor rod 32 is connected on the driving column 6 in a sliding mode, and extends out of the extension groove 5 along with the movement of the driving column 6 towards the direction close to the bottom of the accommodating groove 4, so that the anchor rod 32 is inserted into the river bottom soil layer.

When the pushing member 22 is used to drive the first connecting rod 152 and the second connecting rod 153 to move away from each other, the first connecting block 19 and the second connecting block 20 slide on the connecting rail 21 and move away from each other by using the lever principle, and then the first connecting block 19 and the second connecting block 20 drive the driving column 6 fixedly connected with the connecting rail 21 to move towards the direction of the notch of the accommodating groove 4. Anchor post 31 slides and connects on drive post 6, and along with drive post 6 to keeping away from the direction motion of holding tank 4 bottom and accomodate to extension tank 5 in, realized withdrawing anchor rod 32, be favorable to anchor post 31's recovery.

Referring to fig. 3, in the present embodiment, there are two sets of the pushing components 22, two sets of the pushing components 22 respectively correspond to the two vertical side walls of the mounting support 151 one by one, one set of the pushing components 22 includes a pushing block 221, a screw 222 and a nut 223, the nut 223 is rotatably connected to the vertical side wall of the mounting support 151 far away from the first connecting rod 152 or the second connecting rod 153, the screw 222 and the nut 223 are in threaded engagement, the screw 222 is slidably connected to the vertical side wall of the mounting support 151, and one end of the screw 222 penetrates through the vertical side wall of the mounting support 151 and is hinged to the pushing block 221. In this embodiment, a side wall of one of the pushing blocks 221 facing away from its corresponding screw 222 abuts against a side wall of the first connecting block 19 close to the mounting support 151, a side wall of the other pushing block 221 facing away from its corresponding screw 222 abuts against a side wall of the second connecting block 20 close to the mounting support 151, one end of the screw 222 far from the pushing block 221 passes through the side wall of the mounting support 151, and a spring 23 is disposed between opposite side walls of the first connecting rod 152 and the second connecting rod 153.

Screwing the nut 223, so that the screw 222 moves into the mounting support 151 under the action of the nut 223, and simultaneously, the pushing block 221 is driven to relatively rotate and approach the first connecting rod 152 and the second connecting rod 153; the nut 223 is screwed, so that the screw 222 moves outwards the mounting support 151 under the action of the nut 223, and at this time, the first link 152 and the second link 153 rotate relatively and move away from each other under the action of the elastic force of the spring 23. The screw 222 and the nut 223 are matched to realize the adjustment of the distance between the opposite side walls of the first connecting rod 152 and the second connecting rod 153, so that the operation is convenient for a person.

Referring to fig. 1, 5 and 6, the supporting seat 12 includes two H-shaped steels 121, a plurality of i-shaped steels 122 are disposed between opposite sidewalls of the two H-shaped steels 121, and the i-shaped steels 122 are slidably connected between the two H-shaped steels 121. The H-shaped steel 121 is matched with the I-shaped steels 122, so that the contact area between the bearing support 12 and the bridge bent cap bottom die 11 needing to be supported is increased, and the bridge is stably supported. The flange of the i-steel 122 close to the bridge capping beam bottom die 11 is provided with a plurality of buffer blocks 24, when the bridge capping beam bottom die 11 is cut off in sections, the buffer blocks 24 buffer between the bridge capping beam bottom die 11 and the bearing support 12, which is beneficial to reducing the impact of the gravity of the bridge capping beam bottom die 11 on the bearing support 12.

Be equipped with a plurality of jacks 13 on steelframe 1, the cylinder body fixed connection of jack 13 is at steelframe 1's roof, and the support head of jack 13 and the edge of a wing butt of H shaped steel 121 utilize the support head of jack 13 and the bottom edge of a wing butt of H shaped steel 121 for jack 13 drives bearing support 12 and carries out the bearing, and application range is wide in order to realize carrying out the bearing to the not bridge of co-altitude.

The implementation principle of the support for bridge demolition in the embodiment of the application is as follows: firstly, placing the bottom plate 2 on a river bottom soil layer, and tamping the anchor columns 31 into the sliding holes so that the lower bottom surfaces of the flanges 14 on the anchor columns 31 are abutted to the upper top surface of the bottom plate 2; at this moment, the nut 223 on the mounting support 151 is screwed, after the nut 223 rotates, the screw 222 and the pushing rod move towards the inside of the mounting support 151, so that the first connecting rod 152 and the second connecting rod 153 rotate relatively and approach to each other, under the action of the lever principle, the first connecting rod 152 drives the first connecting block 19, the second connecting rod 153 drives the second connecting block 20 to move towards the direction close to the bottom of the accommodating groove 4 respectively, the first connecting block 19 and the second connecting block 20 drive the connecting rail 21 to move towards the bottom of the accommodating groove 4, and then the connecting rail 21 drives the driving column 6 to move towards the direction close to the bottom of the accommodating groove 4.

The anchor rod 32 slides along the direction of the extension groove 5, when the driving column 6 moves towards the bottom of the accommodating groove 4, the dovetail block 10 on the anchor rod 32 and the dovetail groove 9 on the filling block 8 move relatively, so that the anchor rod 32 extends out of the anchor column 31 along the extension groove 5 along with the movement of the driving column 6 towards the bottom of the accommodating groove 4, so that the anchor column 31 is stably inserted into soil, and the soil around the anchor column 31 is further reinforced.

The jack 13 is started to extend the piston rod, the jack 13 drives the H-shaped steel 121 and the I-shaped steel 122 to move towards the bridge capping beam bottom die 11, when the buffer block 24 is in contact with the bridge capping beam bottom die 11, the support of the bearing support 12 on the bridge capping beam bottom die 11 is realized, so that the bridge capping beam bottom die 11 needing to be cut and removed is supported, and the safety of construction operation is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a bridge is demolishd and is used support, includes steelframe (1), its characterized in that: still include bottom plate (2), steelframe (1) top is equipped with bearing support (12) that are used for supporting bridge bent cap die block (11), bottom plate (2) set up in steelframe (1) bottom, be equipped with a plurality of anchor subassembly (3) that are used for fixing bottom plate (2) on river bed soil layer on bottom plate (2), anchor subassembly (3) are including anchor post (31) and a plurality of stock (32), anchor post (31) are slided and are connected on bottom plate (2), be equipped with holding tank (4) in anchor post (31), the cell wall of holding tank (4) is equipped with extending groove (5) with a plurality of stock (32) one-to-one, stock (32) slide and set up in extending groove (5), be equipped with in holding tank (4) and be used for driving stock (32) to stretch out the outer driving piece of anchor post (31) lateral wall by extending groove (5).

2. The bridge demolition jig according to claim 1, wherein: the driving piece includes drive post (6), drive post (6) are inserted and are established in holding tank (4), be equipped with a plurality of recesses (7) on the lateral wall of drive post (6), it is a plurality of recess (7) respectively with a plurality of extending groove (5) one-to-one, be equipped with filling block (8) in recess (7), the side that filling block (8) are close to holding tank (4) cell wall is established to the inclined plane, filling block (8) are located and are equipped with dovetail (9) on the lateral wall on inclined plane, the one end of stock (32) is equipped with dovetail (10) with dovetail (9) matched with.

3. The bridge demolition jig according to claim 1, wherein: the anchor post is characterized in that a sliding hole for the anchor post (31) to penetrate through is formed in the bottom plate (2), a flange (14) is arranged on the peripheral wall of the anchor post (31), and the bottom wall of the flange (14) is abutted to the top wall of the bottom plate (2).

4. The bridge demolition jig according to claim 3, wherein: the lifting assembly (15) used for driving the driving column (6) to lift is arranged on the flange (14), the lifting assembly (15) comprises an installation support (151), a first connecting rod (152) and a second connecting rod (153), the installation support (151) is fixedly connected to the top wall of the flange (14), the first connecting rod (152) is rotatably connected with the second connecting rod (153), a first sliding block (16) is hinged to one end of the first connecting rod (152), a first connecting block (19) is hinged to the other end of the first connecting rod (152), a second sliding block (17) is hinged to one end of the second connecting rod (153), a second connecting block (20) is hinged to the other end of the second connecting rod, a sliding rail (18) is arranged on the side wall, facing the driving column (6), of the installation support (151), and the first sliding block (16) and the second sliding block (17) are connected to the sliding rail (18) in a sliding manner, the drive post (6) are equipped with on being close to the lateral wall of holding tank (4) notch and connect rail (21), first connecting block (19) and second connecting block (20) all slide and connect on connecting rail (21), be equipped with on erection support (151) and be used for driving first connecting rod (152) and second connecting rod (153) relative pivoted to push away piece (22).

5. The bridge demolition jig according to claim 4, wherein: the pushing piece (22) comprises a screw rod (222), a pushing block (221) and a nut (223), the screw rod (222) is connected to the side wall of the mounting support (151) in a sliding manner, one end of the screw rod (222) is hinged with the pushing block (221), the side wall of the pushing block (221) back to the screw rod (222) is abutted against the side wall of the first connecting rod (152) or the second connecting rod (153), the other end of the screw rod (222) passes through the outside of the side wall of the mounting support (151), the nut (223) is rotatably connected on the side wall of the mounting support (151), the screw rod (222) is in threaded connection with the nut (223), the pushing pieces (22) are provided with two groups, pushing blocks (221) in the two groups of pushing pieces (22) are respectively abutted with the first connecting rod (152) and the second connecting rod (153), a spring (23) is arranged between the opposite side walls of the first connecting rod (152) and the second connecting rod (153).

6. The bridge demolition jig according to claim 1, wherein: bearing support (12) include two relative H shaped steel (121) that set up on steelframe (1), two be equipped with a plurality of I-steel (122) between the relative lateral wall of H shaped steel (121), it is a plurality of I-steel (122) are towards the airfoil of bridge bent cap die block (11) and two airfoil of H shaped steel (121) towards bridge bent cap die block (11) flush.

7. The bridge demolition jig according to claim 6, wherein: the wing surface of the I-shaped steel (122) facing the bridge cover beam bottom die (11) is provided with a plurality of buffer blocks (24), and the buffer blocks (24) are abutted to the bridge cover beam bottom die (11).

8. The bridge demolition jig according to claim 6, wherein: be equipped with a plurality of jacks (13) on steelframe (1), it is a plurality of the support head and the H shaped steel (121) of jack (13) are carried bridge bent cap die block (11) airfoil butt dorsad.

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