Tunnel leveling layer concrete pouring walking chute

Abstract

The utility model discloses a kind of tunnel leveling layer concrete pouring walking chute, including blanking chute and support frame, the support frame includes truss beam and support leg, blanking chute feed inlet one end is hinged fixed with the front beam body of truss beam, blanking chute discharge one end is hanged below the beam body of the rear part of the middle of truss beam by lifting device driven by winch device, the bottom of support leg is fixed with walking wheel. A kind of tunnel leveling layer concrete pouring walking chute provided by the utility model, only needs to be according to concrete transport truck discharge port height and pouring height, the telescopic length of telescopic material receiving chute can be adjusted to meet the requirement of leveling layer concrete moving material pouring;And small, easy to make;With the characteristics of reasonable structure, simple production, low cost, repeated use.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering equipment technology, and in particular to a walking chute for pouring concrete in the tunnel leveling layer. Background Technology

[0002] Currently, tunnel construction in my country is in a phase of rapid development. The tunnel leveling layer is an important component of tunnel construction, and concrete pouring is a crucial step in the leveling layer process. A common method for pouring tunnel leveling layer concrete is that after the reinforcement bars are tied, the concrete truck needs to be positioned on one side of the unloading port to unload the concrete. However, due to the insufficient length of the truck's unloading hopper, the concrete often cannot be unloaded to a considerable lateral distance, requiring manual transfer. This prolonged transfer time often leads to significant slump loss, easily resulting in unusable concrete. Ordinary chutes require manual lifting for transfer, making it impossible to move the concrete while pouring, which is time-consuming and labor-intensive, significantly delaying construction efficiency. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a moving chute for pouring concrete in the tunnel leveling layer. This solves the problem that traditional methods require manual transportation of concrete, which often leads to significant slump loss and renders the concrete unusable due to extended transportation time. This method meets the requirements for moving and placing concrete in the tunnel leveling layer, improves construction efficiency and quality, and saves on construction costs.

[0004] The present invention provides the following solutions:

[0005] This utility model provides a walking chute for concrete pouring in a tunnel leveling layer, including a material discharge chute and a support frame. The support frame includes a truss beam and support legs. One end of the material discharge chute inlet is hinged and fixed to the front beam of the truss beam, and one end of the material discharge chute outlet is suspended below the beam at the rear of the middle of the truss beam by a hoist driven by a winch device. The bottom of the support legs is fixed with walking wheels.

[0006] Furthermore, the wheels are equipped with braking devices.

[0007] Furthermore, the hoisting device includes a hoisting pulley, a fixed pulley, and a wire rope installed around the hoisting pulley and the fixed pulley, with the end of the wire rope fixedly connected to the lifting device.

[0008] Furthermore, the shaft of the winch pulley is coaxially mounted and fixed with the crank handle, and a limit locking mechanism is installed on the shaft.

[0009] Furthermore, the winch pulley is fixed to the truss beam by a winch pulley fixing steel plate, and the fixed pulley is fixed to the truss beam by a fixed pulley fixing steel plate.

[0010] Furthermore, the support legs include a pair of rear support legs located at one end of the feed inlet and a pair of front support legs located at one end of the discharge outlet, with the front support legs being shorter than the rear support legs.

[0011] Furthermore, the front beam of the truss beam is provided with a pair of first ear plates, and one end of the feed inlet of the chute is provided with a pair of second ear plates. The first ear plates and the second ear plates are hinged together by a fixing rod.

[0012] Furthermore, the feed inlet of the feed chute is fitted with a receiving chute.

[0013] Furthermore, the material discharge chute has a central discharge port in the middle, and a central discharge switch is installed at the central discharge port.

[0014] Furthermore, the central unloading switch uses a cover plate with an area sufficient to cover the central unloading port. One side of the cover plate is fixed to the unloading chute by a pin, and the pin is connected and fixed to a handle that passes through the side plate of the unloading chute.

[0015] The beneficial effects of this utility model based on its technical solution are as follows:

[0016] This utility model provides a moving chute for pouring concrete in the tunnel leveling layer. It can meet the requirements of moving concrete placement and pouring in the leveling layer simply by adjusting the extension length of the retractable receiving chute according to the height of the concrete truck unloading port and the pouring height. It is also small in size and easy to manufacture. It has the characteristics of reasonable structure, simple manufacturing, low cost and reusability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of a tunnel leveling layer concrete pouring chute provided by this utility model;

[0019] Figure 2 yes Figure 1 The front view;

[0020] Figure 3 yes Figure 1 Top view;

[0021] Figure 4 yes Figure 1 Side view;

[0022] Figure 5This utility model provides a functional diagram of a tunnel leveling layer concrete pouring and walking chute.

[0023] In the diagram: 1-Traveling wheel, 2-Support frame, 3-Truss beam, 4-Winding pulley, 4a-Limit locking mechanism, 4b-Hand crank, 5-Winding pulley fixing steel plate, 6-Wire rope, 7-Fixed pulley, 8-Fixed pulley fixing steel plate, 9-Discharge chute, 10-Lifting device, 11-Receiving chute, 14-First ear plate, 15-Fixed rod, 16-Middle unloading switch, 17-Limit chute, 18-Limit bolt and nut. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the embodiments of the present utility model.

[0025] Reference Figures 1 to 5 This embodiment provides a walking chute for pouring concrete in a tunnel leveling layer, including a material discharge chute 9 and a support frame 2. The support frame 2 includes a truss beam 3 and support legs. The truss beam 3 can be welded from angle steel and channel steel, and the support legs can be welded from angle steel. The bottom of the support legs is fixed with walking wheels, and the walking wheels 1 are equipped with braking devices.

[0026] The feed inlet of the discharge chute 9 is fitted with a receiving chute 11. The receiving chute 11 may be slightly narrower than the discharge chute 9. The contact surfaces of the receiving chute 11 and the discharge chute 9 may be provided with corresponding limiting grooves 17 and limiting bolts and nuts 18, realizing a telescopic structure formed by the discharge chute 9 and the receiving chute 11. The discharge chute 9 and the receiving chute 11 may be made of 3mm steel plates welded into a trough shape.

[0027] A central discharge port is provided in the middle of the discharge chute 9, and a central discharge switch 16 is installed at the central discharge port. The central discharge switch 16 is a cover plate with an area sufficient to cover the central discharge port. One side of the cover plate is fixed to the discharge chute 9 by a pin, and the pin is connected and fixed to a handle that passes through the side plate of the discharge chute 9. The central discharge port can be opened and closed by rotating the handle.

[0028] One end of the feed inlet of the chute 9 is hinged to the front beam of the truss beam 3: the front beam of the truss beam 3 is provided with a pair of first ear plates 14, and one end of the feed inlet of the chute 9 is provided with a pair of second ear plates. The first ear plates and the second ear plates are hinged together by a fixing rod 15. The fixing rod 15 can be made of 10mm straight round steel, and both ends are directly welded to the truss beam 3.

[0029] One end of the discharge port of the discharge chute 9 is suspended below the beam body at the rear of the middle of the truss beam 3 by a hoist 10 driven by a winch device.

[0030] The winch device includes a winch pulley 4, a fixed pulley 7, and a wire rope 6 installed around the winch pulley 4 and the fixed pulley 7. The end of the wire rope 6 is fixedly connected to the lifting device 10. The winch pulley 4 is installed between a pair of winch pulley fixing steel plates 5, and the fixed pulley 7 is installed between a pair of fixed pulley fixing steel plates 8. The winch pulley fixing steel plates 5 and the fixed pulley fixing steel plates 8 are fixed to the truss beam 3.

[0031] The shaft of the winch pulley 4 is coaxially welded and fixed to the crank handle 4b. The crank handle 4b passes through the pre-drilled hole in the fixing steel plate 5 of the winch pulley. Turning the crank handle 4b can wind up and release the wire rope 6. A limit locking mechanism 4a is installed on the shaft of the winch pulley 4 to brake the crank handle 4a.

[0032] There are various ways to implement the limit locking mechanism 4a. In this embodiment, a bolt is set on the outside of the hoisting pulley fixing steel plate 5. When the bolt is tightened, the hoisting pulley 4 and the hoisting pulley fixing steel plate 5 are pressed together, and the hand crank 4b cannot be rotated.

[0033] The support legs include a pair of rear support legs located at one end of the feed inlet and a pair of front support legs located at one end of the discharge outlet. The front support legs are shorter than the rear support legs, which can adapt to the tunnel pouring environment.

[0034] The construction steps of the tunnel leveling layer concrete pouring walking chute provided by this utility model are as follows: First, the concrete transport truck is parked on the other side of the leveling layer to be poured, the direction of the unloading hopper is adjusted, and this device is moved to the bottom of the concrete transport truck unloading hopper by the walking wheel 1. The unloading height of the lower unloading chute 9 is adjusted by the winch pulley 4, and the bolts are tightened to fix the unloading height of the unloading chute 9.

[0035] Loosen the limit bolt nut 18, adjust the extension length of the receiving chute 11, and then tighten the limit bolt nut 18. Manually rotate to open the middle unloading switch 16, and use a suitable baffle to block it downstream of the middle unloading port. Then open the concrete truck unloading switch, and the concrete can flow along the discharge chute 9 to the middle position of the leveling layer to be poured. After the concrete volume in the middle position of the leveling layer meets the requirements, close the middle unloading switch 16, remove the baffle, and the concrete can flow along the discharge chute 9 to the side position of the leveling layer to be poured. After the concrete volume in the side position of the leveling layer meets the requirements, move the concrete truck and this device simultaneously, and repeat the above steps to continuously complete the pouring of the tunnel leveling layer.

[0036] The baffle in this embodiment is not necessary. By adjusting the discharge rate and the inclination of the discharge chute, the concrete can be smoothly discharged through the central discharge port without using a baffle. The installation direction and size of the central discharge switch 16 can also be changed, and the pin can be set downstream of the central discharge port. When the central discharge switch 16 is erected, the baffle function can be realized at the same time.

[0037] In practical applications, the dimensions of this device can be adjusted according to the required width of the leveling layer on site to meet the needs of moving and placing concrete in the tunnel leveling layer.

[0038] This utility model provides a moving chute for pouring concrete in the tunnel leveling layer. It can meet the requirements of moving concrete placement and pouring in the leveling layer simply by adjusting the extension length of the retractable receiving chute according to the height of the concrete truck unloading port and the pouring height. It is also small in size and easy to manufacture. It has the characteristics of reasonable structure, simple manufacturing, low cost and reusability.

Claims

1. A tunnel leveling layer concrete pouring chute, comprising a material discharge chute (9) and a support frame (2), characterized in that: The support frame (2) includes a truss beam (3) and support legs. One end of the feed inlet of the feed chute (9) is hinged and fixed to the front beam of the truss beam (3). One end of the discharge outlet of the feed chute (9) is suspended below the beam at the rear of the middle part of the truss beam (3) by a hoisting device (10) driven by a winch. The bottom of the support legs is fixed with a traveling wheel (1).

2. The tunnel leveling layer concrete pouring chute according to claim 1, characterized in that: The traveling wheel (1) is equipped with a braking device.

3. The tunnel leveling layer concrete pouring chute according to claim 1, characterized in that: The hoisting device includes a hoisting pulley (4), a fixed pulley (7), and a wire rope (6) installed around the hoisting pulley (4) and the fixed pulley (7). The end of the wire rope (6) is fixedly connected to the lifting device (10).

4. The tunnel leveling layer concrete pouring chute according to claim 3, characterized in that: The shaft of the winch pulley (4) is coaxially fixed with the crank (4b), and a limit locking mechanism (4a) is installed on the shaft.

5. The tunnel leveling layer concrete pouring chute according to claim 3, characterized in that: The winch pulley (4) is fixed to the truss beam (3) by the winch pulley fixing steel plate (5), and the fixed pulley (7) is fixed to the truss beam (3) by the fixed pulley fixing steel plate (8).

6. The tunnel leveling layer concrete pouring chute according to claim 1, characterized in that: The support legs include a pair of rear support legs located at one end of the feed inlet and a pair of front support legs located at one end of the discharge outlet, with the front support legs being shorter than the rear support legs.

7. The tunnel leveling layer concrete pouring chute according to claim 1, characterized in that: The front beam of the truss beam (3) is provided with a pair of first ear plates (14), and one end of the feed inlet of the feed chute (9) is provided with a pair of second ear plates. The first ear plates and the second ear plates are hinged together by a fixing rod (15).

8. The tunnel leveling layer concrete pouring chute according to claim 1, characterized in that: The feed inlet of the feed chute (9) is fitted with a receiving chute (11).

9. The tunnel leveling layer concrete pouring chute according to claim 1, characterized in that: The material discharge chute (9) is provided with a middle discharge port in the middle, and a middle discharge switch (16) is installed at the middle discharge port.

10. The tunnel leveling layer concrete pouring chute according to claim 9, characterized in that: The middle unloading switch (16) adopts a cover plate with an area that can cover the middle unloading port. One side of the cover plate is fixed to the unloading chute (9) by a pin. The pin is connected and fixed to the handle of the side plate passing through the unloading chute (9).

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