CN212316694U

CN212316694U - Support for bridge construction

Info

Publication number: CN212316694U
Application number: CN202020721043.XU
Authority: CN
Inventors: 赵常海; 李海甲
Original assignee: Qingdao Golden Beach Construction Group Co ltd
Current assignee: Qingdao Golden Beach Construction Group Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-01-08
Anticipated expiration: 2030-04-30

Abstract

The utility model belongs to the technical field of the technique of municipal works and specifically relates to a support for bridge construction is related to, it includes a plurality of brace tables, adjacent two be provided with coupling assembling between the brace table, coupling assembling wholly is shaft-like, coupling assembling include the sleeve and slide connect in two slide bars in the sleeve, it is right still to be provided with on the sleeve slide bar carries out spacing locating part, be provided with first receiving piece on the brace table, slide bar with first receiving piece can dismantle the connection. The utility model discloses have the effect that improves bridge beam supports stability.

Description

Support for bridge construction

Technical Field

The utility model belongs to the technical field of the technique of municipal construction and specifically relates to a support for bridge construction is related to.

Background

At present, municipal facilities refer to various buildings, structures, equipment and the like which are arranged in urban areas and urban and rural planning and construction ranges and provide paid or unpaid announcement products and services for residents based on government responsibilities and obligations. Various public infrastructure construction matched with urban life belongs to the municipal engineering category, such as common urban roads, bridges, subways and the like.

Various equipment are often used at the in-process of city bridge construction, for example when the side of being under construction transports the beam slab now, place bridge beam supports earlier on the fortune roof beam car and be used for the shore beam slab, then transport to the frame roof beam scene, the bridge beam supports compares with the former square timber support beam slab, can reduce timber consumption, is favorable to environmental protection, and bridge beam supports's intensity is great moreover, life is longer. However, the condition that the beam slab is locally damaged due to mutual collision in the contact process of the beam slab and the bridge support is likely to cause, and the follow-up repair of workers is needed, so that the time and labor are wasted.

To above-mentioned problem, the current chinese utility model that authorizes bulletin number is CN210315239U discloses a bridge beam supports for bridge construction, and it includes base and damping device, and damping device includes bottom plate, spring, telescopic link and roof, and bolted connection is passed through at the support frame top in the center of bottom plate lower surface, and through bolt installation telescopic link between the center department that the center of bottom plate upper surface is in the roof lower surface, the spring housing is established in the outside of telescopic link, and the spring bottom is connected with the bottom plate, and the spring top is connected with the roof.

When the bridge support is in actual use, when the beam plate is in contact with the bridge support, under the action of the spring on the bridge support, the beam plate has a certain buffering effect, so that the problem of breakage when the beam plate is in contact with the bridge support can be better avoided.

However, the above prior art solutions still have the following drawbacks: when the bridge supports are placed on the beam transporting vehicle, the number of the bridge supports is determined according to the width and the length of the bottom of the beam plate, and the bridge supports are arranged in a matrix shape to achieve the effect of equally dividing the load of the beam plate; when the beam slab is transported to a beam erecting site, the beam slab needs to be lifted by a crane, and in the lifting process of the beam slab, although an operator can control the beam slab to be lifted vertically upwards as much as possible, the beam slab can be influenced by external factors, such as blowing of wind or binding position deviation of steel strands for lifting, and the beam slab can incline and touch a part of bridge supports, so that the bridge supports are dislocated or even overturned; before the beam transporting vehicle transports the next beam slab, workers are required to place the staggered bridge supports to the original positions, time is consumed in the process, and certain influence is generated on the construction efficiency.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a support for bridge construction, it has the effect that improves bridge beam supports stability.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a support for bridge construction, includes a plurality of brace tables, adjacent two be provided with coupling assembling between the brace table, coupling assembling wholly is shaft-like, coupling assembling include the sleeve and slide connect in two slide bars in the sleeve, still be provided with on the sleeve be used for right slide bar carries out spacing locating part, be provided with first receiving piece on the brace table, slide bar with first receiving piece can dismantle the connection.

By adopting the technical scheme, a worker can connect a plurality of supporting tables by using the connecting assembly, and the sliding rod is detachably connected with the supporting tables through the first bearing piece, so that the plurality of supporting tables form a whole, and the stability of a single supporting table is improved; the sliding rod in the connecting assembly can move relative to the sleeve, so that the length of the connecting assembly can be adjusted according to the distance between two adjacent supporting tables according to design requirements.

The present invention may be further configured in a preferred embodiment as: be provided with the hole of sliding on the pole of sliding, be provided with the spacing groove on the telescopic inner wall, the locating part is including being used for passing the sleeve and the hole embedding of sliding the gag lever post of spacing groove.

Through adopting above-mentioned technical scheme, the staff pulls out the spacing groove with the gag lever post, then can make the relative sleeve of slide bar remove, can restrict the slide bar with gag lever post embedding spacing groove and continue to remove, makes things convenient for the staff to adjust coupling assembling's length according to the interval of two adjacent brace tables.

The present invention may be further configured in a preferred embodiment as: the outer peripheral surface of the sleeve is provided with a sliding groove along the length direction of the sleeve, and the limiting rod is connected with the sliding groove in a sliding mode.

Through adopting above-mentioned technical scheme, when the gag lever post withdrawed from the spacing groove, the staff can follow telescopic length direction and move the gag lever post, and the gag lever post can drive the relative sleeve of slide bar and move, makes things convenient for the staff to adjust the amount of movement of slide bar.

The present invention may be further configured in a preferred embodiment as: be provided with the guard box on the telescopic outer peripheral face, the rigid coupling is equipped with the cover and locates on the lateral wall of guard box the ring that slides on the sleeve, the ring that slides with the sleeve connection of sliding, the gag lever post is kept away from the one end of spacing groove is located in the guard box, be provided with the pressing piece on the guard box, the pressing piece is including wearing to locate on the lateral wall of guard box and with gag lever post vertically head rod, the head rod is located tip rigid coupling in the guard box has first wedge, the inclined plane orientation on the first wedge deviates from telescopic one side, the gag lever post is kept away from the tip rigid coupling of spacing groove has the second wedge, the inclined plane of second wedge with the inclined plane laminating setting of first wedge.

By adopting the technical scheme, a worker pushes the first connecting rod into the protection box, the first wedge block pushes the second wedge block, the second wedge block moves towards the direction far away from the sleeve and drives the limiting rod to exit from the limiting groove, then the protection box can be held and moves along the length direction of the sleeve, and the sliding rod moves; after the slide bar moves to the required position, the first connecting rod is pulled out, the limiting rod moves downwards to be embedded into the limiting groove, so that the slide bar is fixed, the limiting rod can be effectively protected, and meanwhile, the operation of workers is facilitated.

The present invention may be further configured in a preferred embodiment as: one end of the first connecting rod, which is positioned outside the protection box, is fixedly connected with a pressing plate, a second spring is sleeved on the first connecting rod, and the second spring is elastically supported between the pressing plate and the outer wall of the protection box.

Through adopting above-mentioned technical scheme, supply the staff to press the head rod according to the clamp plate, the second spring has the trend of ordering about the clamp plate and removing to keeping away from guard box one side according to the clamp plate, like this when the pole that slides removes to the assigned position after, the staff loosens the hand, and the head rod is automatic to the guard box outer removal, makes the staff more laborsaving.

The present invention may be further configured in a preferred embodiment as: the limiting rod is located the tip in the guard box with be provided with the third spring between the inner wall of guard box, the third spring with the limiting rod coaxial setting, third spring one end with the limiting rod contact, the other end with the inner wall contact of guard box.

Through adopting above-mentioned technical scheme, the third spring has the effect of ordering about gag lever post embedding spacing groove, when the second wedge is kept away from to first wedge, orders about the effect at the elasticity of third spring down, and the gag lever post can be more smooth and easy imbeds the spacing inslot.

The present invention may be further configured in a preferred embodiment as: the third spring overcoat is equipped with first guide cylinder and second guide cylinder, first guide cylinder cover is located outside the second guide cylinder and with the second guide cylinder slides and is connected, first guide cylinder with the gag lever post rigid coupling, the second guide cylinder with the inner wall rigid coupling of guard box.

Through adopting above-mentioned technical scheme, first guide cylinder and second guide cylinder restrict the third spring and take place lateral deformation, only make it carry out axial deformation, have increased the stability of third spring, have effectively guaranteed the effect that its elasticity extends.

The present invention may be further configured in a preferred embodiment as: the tip of the pole that slides is provided with the external screw thread, first accepting the piece including being provided with the first screw thread section of thick bamboo of internal thread, the pole that slides with first screw thread section of thick bamboo threaded connection.

Through adopting above-mentioned technical scheme, when the pole that slides is connected with a supporting bench, the staff can twist the screw thread pole that slides and a screw thread section of thick bamboo spiro union together soon to link together two adjacent supporting benches.

The present invention may be further configured in a preferred embodiment as: the first bearing piece further comprises a lantern ring sleeved outside the first threaded cylinder, and the first threaded cylinder is rotatably connected with the lantern ring.

Through adopting above-mentioned technical scheme, when connecting a screw thread section of thick bamboo and slide the pole, a staff rotatable screw thread section of thick bamboo makes a screw thread section of thick bamboo and slide the pole threaded connection together, and then need not rotatory slide the pole to make the staff more laborsaving.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through the arrangement of the connecting assembly and the first bearing piece, a worker can connect a plurality of supporting tables through the connecting assembly, and the sliding rod is detachably connected with the supporting tables through the first bearing piece, so that the plurality of supporting tables form a whole, and the stability of a single supporting table is improved; the sliding rod in the connecting assembly can move relative to the sleeve, so that the length of the connecting assembly can be adjusted according to the distance between two adjacent supporting tables;

2. through the arrangement of the sliding rod, the sliding hole and the limiting groove, a worker pulls the limiting rod out of the limiting groove, then the sliding rod can move relative to the sleeve, the sliding rod can be limited to continue moving by embedding the limiting rod into the limiting groove, and the worker can conveniently adjust the length of the connecting component according to the distance between two adjacent supporting tables;

3. through the arrangement of the sliding groove, the protection box, the sliding ring, the pressing piece and the second wedge-shaped block, a worker pushes the first connecting rod into the protection box, the first wedge-shaped block pushes the second wedge-shaped block, the second wedge-shaped block moves in the direction away from the sleeve and drives the limiting rod to exit from the limiting groove, then the protection box can be held and moves along the length direction of the sleeve, and the sliding rod is further moved; after the slide bar moves to the required position, the first connecting rod is pulled out, the limiting rod moves downwards to be embedded into the limiting groove, so that the slide bar is fixed, the limiting rod can be effectively protected, and meanwhile, the operation of workers is facilitated.

Drawings

Fig. 1 is a schematic structural diagram of a support for bridge construction provided by the present invention;

FIG. 2 is a schematic structural view of a support stage in the example;

FIG. 3 is a cross-sectional view of an embodiment showing a connection assembly;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is a sectional view of the embodiment to show the first receiving member;

fig. 6 is a sectional view of the embodiment to show the second receiving member.

In the figure, 1, a support table; 10. a first support plate; 11. a support pillar; 110. a rib plate; 12. a second support plate; 120. a guide hole; 13. a third support plate; 130. a guide rod; 131. a first baffle plate; 132. a rubber pad; 14. a first spring; 2. a connecting assembly; 20. a sleeve; 200. a sliding groove; 201. a limiting groove; 21. a second baffle; 22. a slide bar; 220. a sliding hole; 23. a protection box; 230. a top plate; 231. a slip ring; 24. a pressing member; 240. a first connecting rod; 241. a pressing plate; 242. a first wedge block; 243. a second spring; 25. a limiting member; 250. a limiting rod; 251. a second wedge block; 252. a third spring; 253. a first guide cylinder; 254. a second guide cylinder; 3. a first receiving member; 30. an ear plate; 31. a collar; 310. a first half ring; 311. a second half ring; 312. a ring groove; 32. a first threaded barrel; 320. a slider; 4. a second receiving member; 40. a second threaded barrel; 41. a second connecting rod; 42. and a third baffle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a support for bridge construction, which is disclosed by the present invention, includes a supporting platform 1 for supporting a beam slab, a connecting assembly 2 for connecting two adjacent supporting platforms 1, and a first receiving member 3; with particular reference to fig. 2, the support table 1 includes a first support plate 10, a support column 11 disposed on top of the first support plate 10, a second support plate 12 disposed on top of the support column 11, and a third support plate 13 disposed above the second support plate 12; the first supporting plate 10 is a rectangular plate and is horizontally arranged; the supporting column 11 is a cylindrical structure, and the supporting column 11 is vertically welded at the center of the upper surface of the first supporting plate 10; the second supporting plate 12 is a rectangular plate which is the same as the first supporting plate 11 and is horizontally arranged, the center position of the lower surface of the second supporting plate 12 is welded with the top end of the supporting column 11, in order to increase the stability of the second supporting plate 12, four rib plates 110 are vertically and uniformly arranged on the outer peripheral surface of the supporting column 11 in a surrounding mode, each rib plate 110 is a triangular steel plate, one right-angle side of each rib plate 110 is welded with the outer peripheral surface of the supporting column 11, and the other right-angle side of each rib plate is welded with the lower surface of the second supporting; the third supporting plate 13 is a rectangular plate which is the same as the second supporting plate 12, the third supporting plate 13 is horizontally arranged above the second supporting plate 12, and a rubber pad 132 which has a buffering effect is further bonded on the upper surface of the third supporting plate 13; a first support plate 10, a support column 11, a second support plate 12 and a third support plate 13, the axes of which are coincident; four first springs 14 which have the effect of elastically supporting the third support plate 13 are vertically arranged between the second support plate 12 and the third support plate 13, the four first springs 14 are respectively arranged at positions close to four end corners of the second support plate 12, four guide holes 120 are vertically arranged on the second support plate 12 corresponding to the four first springs 14, guide rods 130 sleeved in the first springs 14 are connected in the guide holes 120 in a sliding manner, the top ends of the guide rods 130 are fixedly connected to the lower surface of the third support plate 13, and first baffle plates 131 are welded at the bottom ends of the guide rods 130 and used for preventing the guide rods 130 from falling out of the guide holes 120; when the third supporting plate 13 is pressed to move downwards, the first spring 14 is compressed, and the guide rod 130 ensures that the first spring 14 can only be deformed vertically, thereby ensuring the stability of the first spring 14 in the compression process.

Referring to fig. 1 and 3, the connecting assembly 2 includes a sleeve 20, a second baffle 21 disposed in the sleeve 20, and a slide rod 22; the sleeve 20 is horizontally arranged, the sleeve 20 is a hollow cylinder structure with two open ends, and the section of the sleeve 20 is circular; the second baffle 21 is vertically and fixedly arranged at the central position in the sleeve 20, and divides the inner side of the sleeve 20 into two cavities; the number of the sliding rods 22 is two, the two sliding rods 22 are respectively connected in the two cavities in a sliding manner, the outer diameter of each sliding rod 22 is matched with the inner diameter of the sleeve 20, the length of each sliding rod 22 is equal to that of each cavity, and external threads are arranged on the outer peripheral surface of the sliding rod 22, which is far away from the end part of the second baffle 21, in an encircling manner; referring to fig. 3 and 4, two protection boxes 23 are arranged at the top of the sleeve 20, the two protection boxes 23 are respectively symmetrically arranged at two sides of the second baffle 21 and close to the second baffle 21, and a top plate 230 detachably connected is arranged at the top of the protection boxes 23; a sliding groove 200 is radially arranged on the cylinder wall at the top of the sleeve 20, two sliding grooves 200 are formed in the sliding groove, a sliding hole 220 is vertically arranged at the end part of the sliding rod 22 close to the second baffle 21, and a plurality of limiting grooves 201 are uniformly arranged on the inner side of the pipe wall at the bottom of the sleeve 20 along the radial direction; when the end of the sliding rod 22 is tightly attached to the second baffle 21, the sliding hole 220 and the axis of the limiting groove 201 closest to the second baffle 21 are overlapped; the protective box 23 is further provided with a pressing piece 24 and a limiting piece 25, the pressing piece 24 comprises a first connecting rod 240 horizontally penetrating through the side wall of the protective box 23, one end of the first connecting rod 240, which is located outside the protective box 23, is vertically and fixedly connected with a pressing plate 241 for a worker to press, one end of the first connecting rod 240, which is located inside the protective box 23, is fixedly connected with a first wedge-shaped block 242, the inclined surface of the first wedge-shaped block 242 faces the upper side away from one side of the first connecting rod 240, the first connecting rod 240 is further sleeved with a second spring 243, the second spring 243 is located between the pressing plate 241 and the outer wall of the protective box 23, and the second spring 243 has a tendency of driving the pressing plate 241 to move towards the side away from the protective box 23; the limiting member 25 comprises a limiting rod 250, a second wedge block 251 and a third spring 252; the limiting rod 250 vertically penetrates through the sliding hole 220 and is matched with the limiting groove 200; the second wedge block 251 is welded and fixed on one side, close to the first wedge block 242, of the limiting rod 250, and the inclined surface of the second wedge block 251 is attached to the inclined surface of the first wedge block 242; the third spring 252 is vertically arranged, the bottom end of the third spring 252 is welded with the top end of the limiting rod 250, the top end of the third spring 252 is elastically supported on the lower surface of the top plate 230, and the third spring 252 has a tendency of driving the limiting rod 250 to move towards the direction close to the limiting groove 201; in order to increase the stability of the third spring 252 in the compression process, a first guiding cylinder 253 and a second guiding cylinder 254 are sleeved outside the third spring 252, the bottom end of the first guiding cylinder 253 is welded and fixed with the top end of the limiting rod 250, the top end of the second guiding cylinder 254 is welded and fixed with the lower surface of the top plate 230, the second guiding cylinder 254 is sleeved in the first guiding cylinder 253, and when the limiting rod 250 moves, the first guiding cylinder 253 can move relative to the second guiding cylinder 254.

Referring to fig. 2 and 5, the number of the first receiving members 3 is four, the four first receiving members 3 are respectively disposed at four edges of the upper surface of the first support plate 10, each first receiving member 3 includes an ear plate 30 vertically and fixedly connected to the upper surface of the first support plate 10 and a collar 31 rotatably connected to the ear plate 30, an axis of the collar 31 is perpendicular to the edge corresponding to the first support plate 10, the collar 31 can be turned in the vertical direction, the collar 31 is formed by welding a first half ring 310 and a second half ring 311, and a circular groove 312 is circumferentially disposed on an inner wall of the collar 31; the first threaded cylinder 32 is coaxially sleeved in the lantern ring 31, the first threaded cylinder 32 is of a cylinder structure with one open end, internal threads matched with external threads at the end part of the sliding rod 22 are arranged on the inner circumferential surface of the first threaded cylinder 32 in a surrounding mode, a sliding block 320 is welded on the outer wall of the first threaded cylinder 32, the sliding block 320 is connected in the annular groove 312 in a sliding mode, and anti-skidding threads are arranged on the outer circumferential surface, located on the outer portion of the lantern ring 31, of the first threaded cylinder 32; when the first threaded cylinder 32 is not threadedly connected to the slide rod 22, the open end of the first threaded cylinder 32 may be turned downward to prevent foreign objects from entering the first threaded cylinder 32.

A plurality of connecting assemblies 2 can be connected together when the longest length of one connecting assembly 2 is still insufficient to connect two adjacent support tables 1. Referring to fig. 1 and 6, a second socket 4 is arranged between two adjacent connecting assemblies 2, and the second socket 4 comprises a second threaded barrel 40, a second connecting rod 41 and a third baffle plate 42; the second threaded cylinders 40 are of a cylinder structure with an opening at one end, internal threads used for being connected with external threads at the end part of the sliding rod 22 are arranged in the second threaded cylinders 40, the number of the second threaded cylinders 40 is two, the axes of the two second threaded cylinders 40 are overlapped and the openings of the two second threaded cylinders are opposite, and anti-skid threads are arranged on the outer peripheral surfaces of the second threaded cylinders 40; the second connecting rod 41 is rotatably connected between the two second threaded cylinders 40, and two ends of the second connecting rod 41 respectively penetrate into the two second threaded cylinders 40; the third baffle plates 42 are provided with two second baffle plates 42 which are respectively positioned in the two second threaded cylinders 40, the third baffle plates 42 are vertically and fixedly connected with the end parts of the second connecting rods 41, and the rotation of the two second threaded cylinders 40 is not influenced by each other.

The implementation principle of the embodiment is as follows: a worker firstly places a plurality of support tables 1 on a beam transporting vehicle, then starts to place the support tables 1, determines the distance between two adjacent support tables 1 according to the length and the width of the bottom of a beam plate, and adjusts the length of a connecting assembly 2 according to the distance; specifically, when the worker presses the pressing plate 241, the first wedge block 242 pushes the second wedge block 251 to move upwards, the second wedge block 251 drives the limiting rod 250 to move upwards and exit from the limiting groove 201, then the worker can move the protection box 23 to enable the sliding rod 22 to move relative to the sleeve 20, when the overall length of the connecting assembly 2 meets the requirement of the distance between two adjacent supporting tables 1, the worker releases the pressing plate 241, the second spring 243 elastically extends to drive the first wedge block 242 to move in the direction away from the second wedge block 251, the third spring 252 elastically extends to drive the limiting rod 250 to move downwards and be embedded into the corresponding limiting groove 201, and the sliding rod 22 and the sleeve 20 are relatively fixed; the worker may then align the slide bar 22 with the first threaded cylinder 32, rotate the first threaded cylinder 32 such that the first threaded cylinder 32 is threadedly connected with the slide bar 22; if the longest length of one connecting component 2 still cannot satisfy the distance between two adjacent supporting platforms 1, the operator can use the second receiving component 4 to assemble two or more connecting components 2 together, and specifically, the operator aligns the threaded end of the sliding rod 22 with the opening of the second threaded cylinder 40, and rotates the second threaded cylinder 40, so that the connecting component 2 and the second receiving component 4 are fixed together.

The plurality of support tables 1 are connected together through the connecting assembly 2, so that the plurality of support tables 1 form a whole, the stability of the support tables 1 is improved, and a single support table 1 is not easy to move under the influence of external factors; on the other hand, before the support tables 1 are placed, the connecting assemblies 2 can be extended to meet the distance required by two adjacent support tables 1, so that workers can sequentially splice the support tables 1 and the connecting assemblies 2 without worrying about the condition that the support tables 1 are not placed uniformly; if the length of single coupling assembling 2 long-term still can't satisfy the requirement of two adjacent supporting bench 1 intervals, can use second bolster 4 to link together two or more coupling assembling 2, further enlarged coupling assembling 2's application scope.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a support for bridge construction, includes a plurality of brace tables (1), its characterized in that: adjacent two be provided with coupling assembling (2) between brace table (1), coupling assembling (2) wholly is shaft-like, coupling assembling (2) including sleeve (20) and slide connect in two slide bar (22) in sleeve (20), it is right still to be provided with on sleeve (20) slide bar (22) carry out spacing locating part (25), be provided with first receiving piece (3) on brace table (1), slide bar (22) with first receiving piece (3) can dismantle the connection.

2. A support for bridge construction according to claim 1, wherein: be provided with on slide rod (22) and slide hole (220), be provided with spacing groove (201) on the inner wall of sleeve (20), locating part (25) are including being used for passing sleeve (20) and slide hole (220) embedding spacing rod (250) in spacing groove (201).

3. A support for bridge construction according to claim 2, wherein: the outer peripheral surface of the sleeve (20) is provided with a sliding groove (200) along the length direction of the sleeve, and the limiting rod (250) is connected with the sliding groove (200) in a sliding mode.

4. A support for bridge construction according to claim 3, wherein: be provided with guard box (23) on the outer peripheral face of sleeve (20), the rigid coupling is equipped with the cover and locates on the lateral wall of guard box (23) slip ring (231) on sleeve (20), slip ring (231) with sleeve (20) are slided and are connected, gag lever post (250) are kept away from the one end of spacing groove (201) is located in guard box (23), be provided with on guard box (23) and press piece (24), press piece (24) including wear to locate on the lateral wall of guard box (23) and with gag lever post (250) vertically head rod (240), head rod (240) are located the tip rigid coupling in guard box (23) is equipped with first wedge (242), the inclined plane orientation on first wedge (242) deviates from one side of sleeve (20), gag lever post (250) are kept away from the tip rigid coupling of spacing groove (201) has second wedge (251), the inclined plane of the second wedge-shaped block (251) is attached to the inclined plane of the first wedge-shaped block (242).

5. A support for bridge construction according to claim 4, wherein: one end, located outside the protection box (23), of the first connecting rod (240) is fixedly connected with a pressing plate (241), a second spring (243) is sleeved on the first connecting rod (240), and the second spring (243) is elastically supported between the pressing plate (241) and the outer wall of the protection box (23).

6. A support for bridge construction according to claim 4, wherein: the gag lever post (250) be located tip in guard box (23) with be provided with third spring (252) between the inner wall of guard box (23), third spring (252) with gag lever post (250) coaxial setting, third spring (252) one end with gag lever post (250) contact, the other end with the inner wall contact of guard box (23).

7. A support for bridge construction according to claim 6, wherein: the third spring (252) is sleeved with a first guide barrel (253) and a second guide barrel (254), the first guide barrel (253) is sleeved outside the second guide barrel (254) and is connected with the second guide barrel (254) in a sliding mode, the first guide barrel (253) is fixedly connected with the limiting rod (250), and the second guide barrel (254) is fixedly connected with the inner wall of the protection box (23).

8. A support for bridge construction according to claim 1, wherein: the end part of the sliding rod (22) is provided with an external thread, the first bearing piece (3) comprises a first threaded cylinder (32) provided with an internal thread, and the sliding rod (22) is in threaded connection with the first threaded cylinder (32).

9. A support for bridge construction according to claim 8, wherein: the first bearing piece (3) further comprises a sleeve ring (31) sleeved outside the first threaded cylinder (32), and the first threaded cylinder (32) is rotatably connected with the sleeve ring (31).