Limited space prestress tensioning lifting appliance

Abstract

The utility model discloses a limited space prestress tensioning lifting appliance, which is characterized in that firstly, a sliding rail is supported by a supporting assembly, a main beam is used as the sliding rail, the main beam also has the function of directionally fixing a monorail crane, and a user controls the moving direction of the monorail crane on the main beam through a chain on the monorail crane; secondly, a chain block is further hung on the monorail crane, the chain block has the effect of controlling the jack to move between the main beam and the ground, and finally, a fixing piece is detachably arranged on the chain block and used for fixing the jack; the lifting appliance is simple in structure and convenient for site construction, solves the problem of prestress tensioning with limited reserved space under the condition that two span box girders are both completed, ensures reliable positioning and accurate movement of the longitudinal jack, can also ensure suspended positioning of the longitudinal jack during prestress tensioning, improves the working efficiency of prestress, and ensures the construction safety.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, and more specifically, to a limited space prestressed tensioning hanger. Background Art

[0002] In the construction of cast-in-place box girders, prestressed tendon tensioning is an important process in the construction of cast-in-place box girders. The prestressed design of cast-in-place box girders includes web tensioning, top plate tensioning and bottom plate tensioning. The web tensioning anchor groove is located between the two spans of the box girders, and the span distance does not exceed 50cm. The box girder height is about 2m-2.5m, and the tensioning jack weighs about 0.5t.

[0003] The jacks currently used in construction are difficult to move accurately to the specified position when they move freely between the two box girders due to their own weight, so they do not meet the existing needs. In this regard, we propose a limited space prestressed tensioning hanger. Utility Model Content

[0004] The purpose of the utility model is to provide a limited space prestressed tensioning hanger to solve the problem in the prior art that when the jack is freely moved between two box beams, it is difficult to move accurately to the specified position due to its own weight.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: a limited space prestressed tensioning hanger, comprising: a main beam, a monorail carriage and a support assembly are respectively provided at both ends of the main beam, a hand hoist is provided at the end of the monorail carriage away from the main beam, and a fixing part is provided at the end of the hand hoist away from the main beam; a support assembly, the support assembly includes a plurality of support components arranged at intervals on the main beam, and the plurality of support components are all located on the side of the main beam facing the ground, each of the support components includes a pair of support components arranged separately on the main beam, and two of the support components are arranged at intervals on the ground at the end away from the main beam.

[0006] By adopting the above technical solution, first, the support assembly is used to support the slide rail. The main beam serves as the slide rail, and the main beam also has the function of directionally fixing the monorail carriage. The user controls the movement direction of the monorail carriage on the main beam through the chain on the monorail carriage. Secondly, a hand hoist is also installed on the monorail carriage. The hand hoist has the effect of controlling the movement of the jack between the main beam and the ground. Finally, the hand hoist is detachably provided with a fixing part, which is used to fix the jack.

[0007] The present invention is further configured as follows: a plurality of fourth reinforcing ribs are spaced apart at one end of the main beam close to the support assembly.

[0008] By adopting the above technical solution, the fourth reinforcing rib is used to enhance the overall rigidity of the main beam, thereby improving the rigidity of the area of ​​the main beam close to the support assembly, thereby preventing bending moment from occurring when the area is subjected to a force toward the ground.

[0009] The present invention is further configured as follows: a pair of third reinforcing ribs are spaced apart at one end of the main beam close to the monorail vehicle, and the monorail vehicle is located between the two third reinforcing ribs.

[0010] By adopting the above technical solution, the third reinforcing rib is utilized to prevent the monorail vehicle from derailing.

[0011] The utility model is further configured as follows: an elastic rubber is provided on one end of each of the third reinforcing ribs facing the monorail vehicle.

[0012] By adopting the above technical solution, the third reinforcing rib is prevented from being damaged by the monorail vehicle when the monorail vehicle hits the third reinforcing rib during movement, and a shock-absorbing effect is generated when the monorail vehicle hits the third reinforcing rib.

[0013] The utility model is further configured as follows: a fixing plate is provided between the elastic rubber and the third reinforcing rib.

[0014] By adopting the above technical solution, the fixing plate can prevent the elastic rubber from deforming after being simply impacted several times, resulting in a weakening of the shock absorption effect.

[0015] The present invention is further configured as follows: two adjacent support components are connected by two second reinforcing ribs, and the second reinforcing ribs are located at one end of the support component close to the ground.

[0016] By adopting the above technical solution, when a single supporting component is prevented from being subjected to lateral force, the two supporting components are connected to share the unilateral lateral force, and the force exerted on a single supporting component can be exerted by multiple supporting components.

[0017] The present invention is further configured as follows: the two support members are spaced apart on the ground at one end away from the main beam and are in a triangular shape; the two support members are connected by the first reinforcing rib at one end facing the ground.

[0018] By adopting the above technical solution, the rigidity of the support member is improved.

[0019] The utility model is further configured as follows: each of the support members is connected to the ground via a fixed support.

[0020] By adopting the above technical solution, the connection effect between the support member and the ground is improved.

[0021] The present invention is further configured as follows: a covering member is provided at the connection between the fixed support and the support member, and the covering member covers an end of the support member close to the ground.

[0022] By adopting the above technical solution, the support member is prevented from sliding when being subjected to force.

[0023] The present invention is further configured such that: the covering member and the supporting member are connected via bolts.

[0024] By adopting the above technical solution, the disassembly and assembly effects of the covering member and the supporting member are improved.

[0025] To sum up, the utility model has the following beneficial effects: first, the support assembly is used to realize the support of the slide rail, and the main beam serves as the slide rail, and the main beam also has the function of directional fixing of the monorail carriage. The user controls the moving direction of the monorail carriage on the main beam through the chain on the monorail carriage. Secondly, a hand winch is also mounted on the monorail carriage, and the hand winch has the effect of controlling the movement of the jack between the main beam and the ground. Finally, a detachable fixing part is provided on the hand winch, and the fixing part is used to fix the jack; the sling itself has a simple structure and is convenient for on-site construction. It solves the problem of prestressing tensioning with limited reserved space when both spans of box beams are completed, ensures the reliable positioning and accurate movement of the longitudinal jack, and can also ensure the suspended positioning of the longitudinal jack during prestressing, thereby improving the working efficiency of prestressing and ensuring construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a limited space prestressed tensioning hanger in an embodiment of the utility model.

[0027] In the picture:

[0028] 1. Main beam; 11. Fixed plate; 12. Elastic rubber; 13. Third reinforcement rib; 14. Fourth reinforcement rib;

[0029] 2. Monorail operation;

[0030] 3. Hand chain hoist;

[0031] 4. Support assembly; 41. Support member; 42. First reinforcing rib; 43. Second reinforcing rib; 46. Fixed support; 47. Covering member;

[0032] 5. Fixing parts. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 The utility model is described in further detail.

[0034] Example

[0035] like Figure 1 As shown, a limited space prestressed tensioning hanger includes a main beam 1, a monorail carriage 2, a hand hoist 3, a fixing part 5 and a support assembly 4.

[0036] The main beam 1 is an I-beam.

[0037] A monorail trolley 2 and a support assembly 4 are respectively provided at both ends of the main beam 1. The monorail trolley 2 can be slidably mounted on the main beam 1, and the monorail trolley 2 can move on the main beam 1. The user can control the gear transmission inside the monorail trolley 2 through the chain on the monorail trolley 2 to realize the sliding of the monorail trolley 2 on the main beam 1. The user pulls the chain on the monorail trolley 2 to realize the movement of the jack between the two box beams. The monorail trolley 2 is an existing technology.

[0038] A hand hoist 3 is provided at one end of the monorail trolley 2 away from the main beam 1. The hand hoist 3 is detachably hung on the monorail trolley 2. The hand hoist 3 is hung on the monorail trolley 2 using its own hook to fix the hand hoist 3. The user uses the chain on the hand hoist 3 to move the jack between the main beam 1 and the ground. The hand hoist 3 is existing technology.

[0039] The hand hoist 3 is detachably provided with a fixing part 5 at one end away from the main beam 1. The fixing part 5 is a nylon rope or a belt. The user uses the fixing part 5 to fix the jack. When the user pulls the chain to control the monorail carriage 2 to move on the main beam 1, one hand is needed to fix the jack to prevent the jack from rotating and to lift the jack onto the transport cart.

[0040] A plurality of fourth reinforcing ribs 46 are arranged at intervals at one end of the main beam 1 close to the support assembly 4. The main beam 1 and the fourth reinforcing ribs 46 are connected by bolts. The fourth reinforcing ribs 46 are used to improve the rigidity of the main beam 1 to prevent bending moment when the jack moves.

[0041] A pair of third reinforcing ribs 45 are arranged at intervals at one end of the main beam 1 close to the monorail carriage 2, and the monorail carriage 2 is located between the two third reinforcing ribs 45. The third reinforcing ribs 45 are connected to the main beam 1 by bolts. An elastic rubber 12 is fixed to one end of each third reinforcing rib 45 facing the monorail carriage 2, and a fixing plate 11 is provided between the elastic rubber 12 and the third reinforcing rib 45 to prevent the monorail carriage 2 from sliding out of the designated position and causing the jack to hit the box beam or the first reinforcing rib 42.

[0042] The support assembly 4 includes several support components arranged at intervals on the main beam 1, and the several support components are all located on the side of the main beam 1 facing the ground. Each support component includes a pair of adjacent support members 41 arranged on the main beam 1. The support members 41 are connected to the main beam 1 by bolts. The two support members 41 are arranged at intervals on the ground at one end away from the main beam 1, and the main beam 1 is supported by the support members 41.

[0043] Two adjacent support components are connected by two second reinforcing ribs 43, and the second reinforcing ribs 43 are located at the end of the support component close to the ground. The second reinforcing ribs 43 are connected to the support member 41 by bolts. The second reinforcing ribs 43 are used to improve the rigidity of the support member 41 to prevent the support member 41 from being deformed due to excessive torque when the jack is moved.

[0044] The two support members 41 are spaced apart on the ground at one end away from the main beam 1 and are in a triangular shape. The two support members 41 are connected by a first reinforcing rib 42 at one end facing the ground. The first reinforcing rib 42 is set at one-fourth of the support member 41 and is located at the end of the support member 41 close to the ground. The support member 41 and the first reinforcing rib 42 are connected by bolts to prevent the support member 41 from being deformed due to excessive torque when the jack is moved.

[0045] Each support member 41 is connected to the ground via a fixed support 47. A covering member 48 is provided at the connection between the fixed support 47 and the support member 41, and the covering member 48 covers the end of the support member 41 close to the ground. The covering member 48 and the support member 41 are connected by bolts to improve the connection effect between the support member 41 and the ground, and prevent the support member 41 from being directly plugged into the ground, causing deformation at the connection between the support member 41 and the ground when the jack is moved, which directly causes the sling to collapse.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A limited space prestressed tensioning hanger, characterized in that: include: A main beam (1), wherein a monorail vehicle (2) and a support assembly (4) are respectively provided at both ends of the main beam (1), a hand chain hoist (3) is provided at one end of the monorail vehicle (2) away from the main beam (1), and a fixing member (5) is provided at one end of the hand chain hoist (3) away from the main beam (1); A support assembly (4), the support assembly (4) comprising a plurality of support components spaced apart on the main beam (1), wherein the plurality of support components are all located on the side of the main beam (1) facing the ground, each of the support components comprising a pair of support members (41) spaced apart and spaced apart on the main beam (1), and two of the support members (41) are spaced apart and spaced apart on the ground at one end away from the main beam (1).

2. A limited space prestressed tensioning hanger according to claim 1, characterized in that: A plurality of fourth reinforcing ribs (46) are arranged at intervals at one end of the main beam (1) close to the support assembly (4).

3. A limited space prestressed tensioning hanger according to claim 2, characterized in that: A pair of third reinforcing ribs (45) are arranged at intervals on one end of the main beam (1) close to the monorail vehicle (2), and the monorail vehicle (2) is located between the two third reinforcing ribs (45).

4. A limited space prestressed tensioning hanger according to claim 3, characterized in that: Each of the third reinforcing ribs (45) is provided with an elastic rubber (12) at one end facing the monorail vehicle (2).

5. A limited space prestressed tensioning hanger according to claim 4, characterized in that: A fixing plate (11) is provided between the elastic rubber (12) and the third reinforcing rib (45).

6. The limited space prestressed tensioning hanger according to claim 1, characterized in that: Two adjacent support components are connected via two second reinforcing ribs (43), and the second reinforcing ribs (43) are located at one end of the support component close to the ground.

7. A limited space prestressed tensioning hanger according to claim 6, characterized in that: The two support members (41) are spaced apart and arranged on the ground at one end away from the main beam (1) and are in a triangular shape. The two support members (41) are connected by a first reinforcing rib (42) at one end facing the ground.

8. A limited space prestressed tensioning hanger according to any one of claims 1 to 7, characterized in that: Each of the support members (41) is connected to the ground via a fixed support (47).

9. The limited space prestressed tensioning hanger according to claim 8, characterized in that: A covering member (48) is provided at the connection between the fixed support (47) and the support member (41), and the covering member (48) covers an end of the support member (41) close to the ground.

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