Arch lifting device for tunnel construction

Abstract

The utility model discloses an arch lifting device for tunnel construction, which comprises power mechanisms symmetrically arranged at the upper ends of arch trolley bottom plates at the front and back positions and used for providing lifting power; the chain assembly comprises a first follow-up chain wheel, a second follow-up chain wheel, a lifting chain and a second chain wheel shaft, the first follow-up chain wheel is located at the lower end of a vertical plate of the lagging jack trolley and connected with the power mechanism, and the second chain wheel shaft is fixed to the upper end of the vertical plate of the lagging jack trolley and connected with the lifting chain. The second follow-up chain wheel is rotationally connected to the outer side face of the second chain wheel shaft, and the lifting chain is annularly connected between the first follow-up chain wheel and the second follow-up chain wheel in a sleeved mode. The lagging jack lifting device for tunnel construction can ensure the stability of the lagging jack in the lifting process, avoids shaking of the lagging jack, and ensures the construction safety at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel construction technical field, concretely is a kind of arch frame lifting device for tunnel construction. BACKGROUND

[0002] In the excavation process of tunnel, arch frame is needed to be installed to support and improve the stability of surrounding rock.

[0003] The existing arch frame trolley is mostly installed with winch on the top of arch frame trolley when lifting arch frame, and the winch lifts arch frame to the top of trolley by rope, since arch frame is arc structure, arch frame is easy to shake in the lifting process, which not only causes personal injury to workers, but also needs workers to straighten arch frame when lifting to the top of trolley, increasing the labor intensity of workers. SUMMARY

[0004] The utility model solves the technical problem to overcome the existing defects, provide a kind of arch frame lifting device for tunnel construction, can guarantee the stability of arch frame lifting process, avoid its shaking, while guaranteeing construction safety, can effectively solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of arch frame lifting device for tunnel construction, comprising:

[0006] Power mechanism, symmetrically arranged in the upper end of arch frame trolley base plate in front and back position, for providing lifting power;

[0007] Chain assembly, including first follow-up sprocket, second follow-up sprocket, lifting chain and second sprocket shaft, the first follow-up sprocket is located in the lower end of arch frame trolley vertical plate, and is connected with the power mechanism, the second sprocket shaft is fixed in the upper end of the arch frame trolley vertical plate, the second follow-up sprocket is rotatably connected to the outer side of the second sprocket shaft, the lifting chain is annularly connected between the first follow-up sprocket and second follow-up sprocket;

[0008] Supporting assembly, connected with the chain assembly, for supporting arch, the movement of chain assembly drives the lifting of supporting assembly.

[0009] As a preferred technical scheme of the utility model, the power mechanism includes driving motor, driving sprocket, transmission chain, driven sprocket and second sprocket shaft;

[0010] The driving motor is fixed in the upper end of the arch frame trolley base plate, the output shaft of the driving motor is connected with the driving sprocket, the first sprocket shaft is rotatably connected in the lower end of the arch frame trolley vertical plate, the first follow-up sprocket and driven sprocket are both connected in the outer side of the first sprocket shaft, and the transmission chain is annularly connected between the driving sprocket and the driven sprocket.

[0011] As a preferred technical scheme of the utility model, the driving motor is a reversible motor, and the ascending and descending of the support assembly are realized by controlling the forward and reverse rotation of the driving motor.

[0012] As a preferred technical scheme of the utility model, the support assembly comprises a connecting block, a stand, a limiting plate and a support block.

[0013] The connecting block is fixedly connected with one side of the lifting chain, and the other end of the connecting block is fixedly connected with the stand; the upper end of the stand is symmetrically provided with limiting plates, the spacing between the two limiting plates is adapted to the thickness of the arch support, and the support block is located between the two limiting plates.

[0014] As a preferred technical scheme of the utility model, the height of the limiting plate is higher than that of the support block.

[0015] As a preferred technical scheme of the utility model, the upper surface of the support block is provided with anti-skid lines.

[0016] Compared with the prior art, the tunnel construction arch support lifting device has the advantages that the design is reasonable and ingenious; the ascending and descending of the arch support are controlled through the chain assembly, the stability during the ascending process is ensured, the arch support is limited through the support assembly, the inclination of the arch support during the ascending process is avoided, the arch support is ensured to be in the vertical state when being lifted to the top of the trolley, the moving mechanism on the arch support trolley is facilitated to lift and move the arch support to the fixed position, manual righting is not needed, and the use convenience is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view of the utility model;

[0018] Figure 2 It is Figure 1 It is an enlarged schematic view of A in the middle;

[0019] Figure 3 It is Figure 1 It is an enlarged schematic view of B in the middle.

[0020] In the drawing: 1, arch support trolley bottom plate; 2, arch support trolley vertical plate; 3, power mechanism; 31, driving motor; 32, driving sprocket; 33, transmission chain; 34, driven sprocket; 35, first sprocket shaft; 4, chain assembly; 41, first follower sprocket; 42, lifting chain; 43, second follower sprocket; 44, second sprocket shaft; 5, support assembly; 51, connecting block; 52, stand; 53, limiting plate; 54, support block. DETAILED DESCRIPTION

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments (for ease of description and understanding, hereinafter referred to as...). Figure 1 Above is above, Figure 1 (The preceding part is described as the preceding part). Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1-3 This utility model provides a technical solution: an arch frame lifting device for tunnel construction, including a power mechanism 3, a chain assembly 4 and a support assembly 5. There are two power mechanisms 3, chain assemblies 4 and support assemblies 5, which are respectively set on the upper end of the arch frame trolley base plate 1 located at the front and rear positions.

[0023] The power mechanism 3 includes a drive motor 31, a drive sprocket 32, a transmission chain 33, a driven sprocket 34, and a second sprocket shaft 44;

[0024] The drive motor 31 is fixed to the upper end of the arch frame trolley base plate 1. The drive motor 31 is a reversible motor. The support assembly 5 is raised and lowered by controlling the forward and reverse rotation of the drive motor 31. The output shaft of the drive motor 31 is connected to the drive sprocket 32. The first sprocket shaft 35 is rotatably connected to the lower end of the arch frame trolley upright plate 2. The driven sprocket 34 is sleeved on the outer side of the first sprocket shaft 35. The transmission chain 33 is looped between the drive sprocket 32 ​​and the driven sprocket 34. The drive motor 31 controls the rotation of the drive sprocket 32, and the transmission chain 33 controls the rotation of the driven sprocket 34, thereby driving the first sprocket shaft 35 to rotate, thus providing lifting power for the chain assembly 4.

[0025] The chain assembly 4 includes a first follower sprocket 41, a second follower sprocket 43, a lifting chain 42, and a second sprocket shaft 44. The first follower sprocket 41 is fixed to the outer side of the first sprocket shaft 35, the second sprocket shaft 44 is fixed to the upper end of the arch frame trolley upright plate 2, the second follower sprocket 43 is rotatably connected to the outer side of the second sprocket shaft 44, and the lifting chain 42 is looped between the first follower sprocket 41 and the second follower sprocket 43.

[0026] The support assembly 5 comprises a connecting block 51, a stand 52, a limiting plate 53 and a support block 54, the connecting block 51 is fixedly connected with one side of the lifting chain 42, the other end of the connecting block 51 is fixedly connected with the stand 52, the upper end of the stand 52 is symmetrically provided with the limiting plate 53, the spacing between the two limiting plates 53 is matched with the thickness of the arch frame, so that the arch frame can be clamped between the two limiting plates 53, the support block 54 is located between the two limiting plates 53, by placing the arch frame on the support blocks 54 of the two support assemblies 5 arranged in front and back, the arch frame is limited under the action of the limiting plate 53, and the arch frame is prevented from tilting in the rising process.

[0027] Further, in order to prevent the arch frame from tilting, the height of the limiting plate 53 is higher than the height of the support block 54.

[0028] Further, in order to avoid sliding of the arch frame after being placed, the upper surface of the support block 54 is provided with anti-skid lines.

[0029] In use: the arch frame is placed on the support assemblies 5 on the front and rear ends of the arch frame trolley by the hoist, so that the lower end of the arch frame is in contact with the support block 54 and clamped between the two limiting plates 53, then the driving motors 31 of the two power mechanisms 3 are controlled to be started synchronously, the lifting chain 42 in the chain assembly 4 is driven to move under the transmission of the driving sprocket 32 and the driven sprocket 34, the support assembly 5 is driven to rise, the arch frame on the support assembly 5 rises, until the arch frame is lifted to the top of the trolley, and the moving mechanism on the upper part of the arch frame trolley lifts the arch frame and moves to the position to be fixed.

[0030] The arch frame can be stably lifted to the top of the arch frame trolley by the chain assembly 4, the stability of the lifting process is ensured, the arch frame is limited under the action of the support assembly 5, the arch frame is prevented from tilting in the rising process, the arch frame is in a vertical state when moving to the top of the trolley, and there is no need to right it, so that the use convenience is greatly improved.

[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An arch frame lifting device for tunnel construction, characterized by: The utility model relates to an arch support lifting device, including: A power mechanism (3) is arranged symmetrically at the upper end of the arch trolley bottom plate (1) located at the front and rear positions and is used for providing lifting power; A chain assembly (4) includes a first follow-up sprocket (41), a second follow-up sprocket (43), a lifting chain (42) and a second sprocket shaft (44), the first follow-up sprocket (41) is located at the lower end of the arch trolley vertical plate (2) and is connected with the power mechanism (3), the second sprocket shaft (44) is fixed at the upper end of the arch trolley vertical plate (2), the second follow-up sprocket (43) is rotatably connected to the outer side of the second sprocket shaft (44), and the lifting chain (42) is annularly sleeved between the first follow-up sprocket (41) and the second follow-up sprocket (43); A support assembly (5) is connected with the chain assembly (4) and is used for supporting an arch, and the movement of the chain assembly (4) drives the lifting of the support assembly (5).

2. The arch frame lifting device for tunnel construction of claim 1, wherein: The power mechanism (3) includes a driving motor (31), a driving sprocket (32), a transmission chain (33), a driven sprocket (34) and a first sprocket shaft (35); The driving motor (31) is fixed at the upper end of the arch trolley bottom plate (1), the output shaft of the driving motor (31) is connected with the driving sprocket (32), the first sprocket shaft (35) is rotatably connected to the lower end of the arch trolley vertical plate (2), the first follow-up sprocket (41) and the driven sprocket (34) are both sleeved on the outer side of the first sprocket shaft (35), and the transmission chain (33) is annularly sleeved between the driving sprocket (32) and the driven sprocket (34).

3. The arch frame lifting device for tunnel construction according to claim 2, characterized in that: The driving motor (31) is a reversible motor, and the lifting and lowering of the support assembly (5) are realized by controlling the forward and reverse rotation of the driving motor (31).

4. The arch bracket lifting device for tunnel construction of claim 1, wherein: The support assembly (5) includes a connecting block (51), a vertical support (52), a limiting plate (53) and a support block (54); One side of the connecting block (51) is fixedly connected with the lifting chain (42), the other end of the connecting block (51) is fixedly connected with the vertical support (52), the upper end of the vertical support (52) is symmetrically provided with the limiting plates (53), the spacing between the two limiting plates (53) is adapted to the thickness of the arch, and the support block (54) is located between the two limiting plates (53).

5. The arch frame lifting device for tunnel construction of claim 4, wherein: The height of the limiting plate (53) is higher than the height of the support block (54).

6. The arch lifting device for tunnel construction according to claim 4 or 5, characterized in that: The upper surface of the support block (54) is provided with anti-skid lines.

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