Locking mechanism, support device and trolley for tunnel construction

Abstract

The utility model provides a kind of locking mechanism, supporting device and trolley for tunnel construction. Locking mechanism is used to lock adjustable length locking target, and locking mechanism includes: fixed part, fixed part is used to install and fix locking mechanism;Adjusting part, adjusting part can be moved relative to fixed part, so that the length of the extension of adjusting part relative to fixed part is consistent with locking target;Locking part, locking part is used to lock adjusting part, so that adjusting part is fixed relative to fixed part. The locking mechanism of the utility model can lock locking target, to avoid its failure.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and more specifically, to a locking mechanism, a support device, and a trolley for tunnel construction. Background Technology

[0002] In the field of construction machinery, there are frequent scenarios where support devices, such as hydraulic cylinders, are needed to support equipment or construction objects. In these applications, if the hydraulic cylinder stops providing pressure or fails due to a malfunction, it can no longer provide support to the equipment or construction object. A continuous supply of hydraulic oil to the cylinder increases the load on the equipment, while cylinder failure can lead to equipment damage or safety accidents. Therefore, equipping such support devices with locking mechanisms to protect them is essential. Utility Model Content

[0003] This utility model provides a locking mechanism, a support device, and a trolley for tunnel construction to solve the technical problems existing in the prior art, such as the need for a continuous power supply to the support device during operation, and the potential safety hazards that may arise if the support device fails.

[0004] To solve the above problems, this utility model provides a locking mechanism for locking an adjustable length target. The locking mechanism includes: a fixing part for installing and fixing the locking mechanism; an adjusting part that can move relative to the fixing part so that the elongation of the adjusting part relative to the fixing part is consistent with the length of the target; and a locking part for locking the adjusting part so that the adjusting part is fixed relative to the fixing part.

[0005] In the above technical solution, the locking target includes a fixed end and a movable end that can extend and retract relative to the fixed end; the fixed part and the fixed end are connected and fixed to each other, or formed as the same component.

[0006] In the above technical solution, the locking target includes a fixed end and a movable end that can extend and retract relative to the fixed end; the adjusting part is connected and fixed to the movable end.

[0007] In the above technical solution, the locking part secures the adjusting part to the fixing part in the locked state.

[0008] In the above technical solution, the fixing part has a through hole, the adjusting part is a threaded rod that passes through the through hole, and the locking part is a nut sleeved on the adjusting part.

[0009] In the above technical solution, the locking part includes a first nut and a second nut respectively disposed on both sides of the fixing part.

[0010] In the above technical solution, the locking target includes a fixed end and a movable end that can extend and retract relative to the fixed end; either the movable end or the adjusting part has a support platform; the movable end and the adjusting part are connected through the support platform.

[0011] In the above technical solution, the support platform is located on the side wall of the movable end, the end of the adjustment part is provided with a gasket, the gasket is connected to the support platform by fasteners, and a reinforcing rib is provided between the support platform and the movable end.

[0012] This utility model also provides a support device, which includes: a support leg with an adjustable length; and a locking mechanism as described in any of the above technical solutions, wherein the locking mechanism uses the support leg as the locking target and is used to lock the support leg.

[0013] This utility model also provides a trolley for tunnel construction, the trolley including: a trolley body; and a support device as described in any of the above technical solutions, the support device being disposed on the trolley body and used to directly or indirectly abut against the inner wall of the tunnel.

[0014] Beneficial effects This invention provides a locking mechanism for locking an adjustable-length target. The locking mechanism includes a fixing part, an adjusting part, and a locking part. The fixing part is used to install and fix the locking mechanism, while the adjusting part can move relative to the fixing part so that its extension relative to the fixing part matches the length of the target. After adjusting the extension of the adjusting part relative to the fixing part to a suitable degree, the locking part can be used to lock the adjusting part, thus fixing it relative to the fixing part. Therefore, the extension of the adjusting part relative to the fixing part always remains consistent with the length of the target, allowing the locking mechanism to replace or assist the target in providing support. Even in cases where the target's power supply stops, it retracts, or malfunctions, the locking mechanism can still provide support. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the locking mechanism and locking target in this utility model (3D view - downward support - retracted state); Figure 2 This is a schematic diagram of the locking mechanism and locking target in this utility model (three-dimensional view - downward support - extended state); Figure 3 This is a schematic diagram of the locking mechanism and locking target in this utility model (left view - upward support - retracted state); Figure 4 This is a schematic diagram of the locking mechanism and locking target in this utility model (left view - upward support - extended state); Figure 5This is a schematic diagram of the locking mechanism and locking target of this utility model (front view - upward support - extended state).

[0016] Explanation of reference numerals in the attached figures: Locking mechanism: 100; Fixed part: 110; Adjusting part: 120; Washer: 121; Fastener: 122; Locking part: 130; First nut: 131; Second nut: 132; Locking target: 200; Fixed end: 210; Moving end: 220; Support platform: 221; Reinforcing rib: 222. Detailed Implementation

[0017] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the field of construction machinery, there are frequent scenarios where support devices are needed to support equipment or construction objects. For example, when some construction vehicles are parked and operating, hydraulic outriggers extend a certain length to support and secure the chassis. In tunnel construction, trolleys serve as mobile factories and command centers, providing all necessary support for tunnel boring equipment and handling various logistical issues arising during the excavation process. Trolleys are typically mounted on tracks and pulled forward by the main unit. After the trolley brakes, or during construction, support mechanisms similar to hydraulic outriggers are needed to lift or raise the trolley's base to prevent movement. Furthermore, the sides of the trolley require front and rear backplates for support, and the top can be supported by a top brace. The front and rear backplates and the top brace can be mounted to the trolley's columns using hydraulic cylinders. Extending the cylinders then presses the backplates and top brace against the tunnel wall to prevent tunnel deformation and maintain trolley stability.

[0019] In the aforementioned application scenarios, support devices such as hydraulic cylinders are required to support the equipment or workpiece. When the hydraulic cylinder ceases to provide pressure or fails due to malfunction, the support device can no longer provide support. A continuous supply of hydraulic oil to the cylinder increases the load on the equipment, while cylinder failure can lead to equipment damage or safety accidents. Therefore, equipping such support devices with locking mechanisms to protect them is essential.

[0020] like Figure 1 and Figure 2As shown, to achieve the above objectives, this utility model provides a locking mechanism 100 for locking an adjustable-length locking target 200. It can be understood that the locking target 200 is a support mechanism such as a hydraulic cylinder or electric cylinder, used to support equipment or construction objects. The length of the locking target 200 is extendable to achieve the supporting purpose.

[0021] For example, the locking target 200 can be a hydraulic cylinder, whose piston can extend and retract relative to the cylinder barrel to support the equipment or construction object. By using a support mechanism as the locking target 200 and locking it with the locking mechanism 100, the locking mechanism 100 can replace or assist the locking target 200 in providing support when the locking target 200 lacks power or fails, thereby protecting the support mechanism and ensuring construction safety. It can be understood that the support mechanism serving as the locking target 200 can be located at the bottom of the equipment for supporting and lifting the equipment, or it can be located at the top or side of the equipment for fixing the equipment or construction object.

[0022] To enable the locking mechanism 100 to achieve the aforementioned functions, the locking mechanism 100 of this invention includes: a fixing part 110, an adjusting part 120, and a locking part 130. The fixing part 110 is used to install and fix the locking mechanism 100. The adjusting part 120 is movable relative to the fixing part 110, such that the elongation of the adjusting part 120 relative to the fixing part 110 is consistent with the length of the locking target. The locking part 130 is used to lock the adjusting part 120, thereby fixing the adjusting part 120 relative to the fixing part 110.

[0023] Therefore, when the locking target 200 extends or shortens to a certain length, the adjusting part 120 can be moved and adjusted to a position or state where its extension matches the length of the locking target 200, thereby achieving the purpose of auxiliary support. In this state, by locking the adjusting part 120 relative to the fixing part 110 with the locking part 130, the adjusting part 120 can remain stable, withstand pressure, and protect the locking target 200.

[0024] Preferably, the locking mechanism 100 can be disposed beside the locking target 200, and the directions of their extension and retraction are consistent. More preferably, the fixing part 110 can also be disposed on the locking target 200, or the fixing part 110 can share a component with a fixed structure in the locking target 200. For example, as... Figure 1 and Figure 2As shown, the locking target 200 includes a fixed end 210 and a movable end 220 that can extend and retract relative to the fixed end 210; the fixed part 110 is connected and fixed to the fixed end 210, or formed as a single component. The locking target 200 is a hydraulic cylinder support leg located at the bottom of the trolley, the fixed end 210 is the cylinder barrel, and the movable end 220 is the piston of the hydraulic cylinder. The fixed part 110 is part of the cylinder barrel housing, or a bracket for supporting the cylinder barrel. The embodiment in which the fixed part 110 and the fixed end 210 are connected and fixed to each other, or formed as a single component, simplifies the equipment structure, saves space, and ensures that the locking mechanism 100 is stably installed and fixed.

[0025] It is understood that the operator can manually drive the adjusting part 120 to move relative to the fixed part 110 after the locking target 200 has extended or retracted into position, or the adjusting part 120 can be automatically driven to move relative to the fixed part 110 by means of a structure such as a motor. Alternatively, a limit switch can be provided to automatically trigger the adjusting part 120 to move relative to the fixed part 110 after the locking target 200 has extended or retracted into position.

[0026] Preferably, the adjusting part 120 can move relative to the fixed part 110 synchronously with the extension and retraction process of the locking target 200. To achieve the above objective with a relatively simple mechanical structure, such as... Figure 1 and Figure 2 As shown, the locking target 200 of this invention includes a fixed end 210 and a movable end 220 that can extend and retract relative to the fixed end 210. The adjusting part 120 is connected and fixed to the movable end 220. Therefore, when the movable end 220 extends or retracts relative to the fixed end 210, the adjusting part 120 moves synchronously under the drive of the movable end 220. The advantage of this embodiment is that when the locking target 200 reaches its position, the locking part 130 can be used to lock the adjusting part 120. Construction efficiency is higher, and manual adjustment or control of the position or extension length of the locking part 130 is eliminated. The locking part 130 completely follows the movement of the locking target 200, its extension length is more precise, and the support effect is better.

[0027] Further preferably, the locking target 200 includes a fixed end 210 and a movable end 220 retractable relative to the fixed end 210; either the movable end 220 or the adjusting part 120 has a support platform 221; the movable end 220 and the adjusting part 120 are connected via the support platform 221. For example, as... Figure 1 and Figure 2As shown, the side wall of the movable end 220 has a support platform 221; the fixed part 110 is formed as part of the fixed end 210, and the adjusting part 120 is connected to the support platform 221. The support platform 221 is formed as a flat plate structure protruding relative to the side wall of the movable end 220. The adjusting part 120 extends to the position of the support platform 221 and is connected to the support platform 221 by a connection structure or connection method such as rivets, screws, or welding. Thus, the adjusting part 120 can move synchronously with the movable end 220, and the adjusting part 120 can support the equipment or construction object to be supported by the locking target 200 in the same force direction.

[0028] Preferably, such as Figure 1 and Figure 2 As shown, the end of the adjusting part 120 is provided with a washer 121, which is connected to the support platform 221 by a fastener 122. A reinforcing rib 222 is provided between the support platform 221 and the movable end 220. Since the adjusting part 120 needs to be located beside the locking target 200, its position is small and welding is inconvenient. Therefore, it is simpler and more convenient to use fasteners 122, such as screws or rivets, to connect the washer 121 and the support platform 221.

[0029] As mentioned above, the locking part 130 is used to restrict the movement of the adjusting part 120 relative to the fixed part 110. To achieve the above purpose, the locking part 130 preferably secures the adjusting part 120 to the fixed part 110 in the locked state. The structure required for the fastening connection is simple, and the fastening effect is more reliable.

[0030] For example, such as Figure 1 and Figure 2 As shown, the fixing part 110 has a through hole, the adjusting part 120 is a threaded rod passing through the through hole, and the locking part 130 is a nut fitted onto the adjusting part 120. The outer wall of the threaded rod has external threads, and the inner wall of the nut has internal threads. The locking part 130 can rotate and move along the adjusting part 120 due to the internal and external threads. The inner wall of the through hole is smooth, allowing the adjusting part 120 to slide up and down along the through hole. Thus, after the adjusting part 120 moves to the target position following the movable end 220 of the locking target 200, the locking part 130 can be rotated to lock the adjusting part 120.

[0031] Understandable, such as Figure 1 and Figure 2 As shown, when the movable end 220 extends downwards, a locking part 130 located at the lower end of the fixed part 110 can thread-lock the adjusting part 120, thereby preventing the adjusting part 120 from moving upwards relative to the fixed part 110. Figure 3 and Figure 4As shown, when the movable end 220 extends upward, it is preferable to use two mating nuts as the locking part 130. Specifically, the locking part 130 includes a first nut 131 and a second nut 132 respectively disposed on both sides of the fixed part 110. It can be understood that when the adjusting part 120 moves up and down, the locking part 130 needs to be unscrewed a certain distance to ensure that the adjusting part 120 moves smoothly.

[0032] This utility model also provides a support device, which includes: a support leg with an adjustable length; and a locking mechanism 100 as described in any of the above technical solutions, the locking mechanism 100 targeting the support leg 200 for locking the support leg. As mentioned above, this support device is suitable for the field of engineering machinery, providing support for any equipment or construction object requiring support. It can carry objects and can provide support in any direction (e.g., upwards or to the side). For example, the support leg can be a hydraulic cylinder or an electric cylinder.

[0033] This utility model also provides a trolley for tunnel construction, the trolley comprising: a trolley body; and a support device as described in any of the above technical solutions, the support device being disposed on the trolley body and used to directly or indirectly abut against the inner wall of the tunnel.

[0034] For example, such as Figure 1 and Figure 2 As shown, the locking mechanism 100 of this utility model can be applied to the bottom plate of the trolley used for tunnel construction. By using the hydraulic cylinder support leg provided on the bottom plate of the trolley as the locking target 200, the trolley can be supported and fixed by the hydraulic cylinder support leg, and the locking mechanism 100 can protect the hydraulic cylinder support leg and the trolley when the hydraulic cylinder support leg fails.

[0035] For example, the locking mechanism 100 of this invention can also be applied to the front and rear back panels or top supports of the tunnel construction trolley. The front and rear back panels or top supports of the trolley are connected to the trolley's uprights via hydraulic cylinders. The hydraulic cylinders extend so that the front and rear back panels abut against the tunnel sidewalls, or the top supports abut against the tunnel roof. Using the hydraulic cylinders as the locking target 200, the locking mechanism 100 can provide support after the hydraulic oil supply is stopped, preventing tunnel deformation. For example, as... Figure 3 and Figure 4 ,as well as Figure 5 As shown, the upwardly extending locking target 200 and locking mechanism 100 can provide support for the top support of the tunnel construction trolley. It can be understood that if... Figure 3 and Figure 4 ,as well as Figure 5 As shown, the locking target 200 and the locking mechanism 100 are arranged laterally, so they can provide support for the front and rear back plates of the tunnel construction trolley.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A locking mechanism, characterized in that, The locking mechanism (100) is used to lock the length-adjustable locking target (200), and the locking mechanism (100) includes: A fixing part (110) is used to install and fix the locking mechanism (100); An adjustment part (120) is movable relative to the fixed part (110) such that the elongation of the adjustment part (120) relative to the fixed part (110) is consistent with the length of the locking target (200); A locking part (130) is used to lock the adjusting part (120) so that the adjusting part (120) is fixed relative to the fixing part (110).

2. The locking mechanism according to claim 1, characterized in that, The locking target (200) includes a fixed end (210) and a movable end (220) that can extend and retract relative to the fixed end (210); the fixing part (110) is connected and fixed to the fixed end (210) or formed as the same component.

3. The locking mechanism according to claim 1, characterized in that, The locking target (200) includes a fixed end (210) and a movable end (220) that can extend and retract relative to the fixed end (210); the adjustment part (120) is connected and fixed to the movable end (220).

4. The locking mechanism according to claim 1, characterized in that, The locking part (130) secures the adjusting part (120) to the fixing part (110) in the locked state.

5. The locking mechanism according to claim 1, characterized in that, The fixing part (110) has a through hole, the adjusting part (120) is a threaded rod that passes through the through hole, and the locking part (130) is a nut that is sleeved on the adjusting part (120).

6. The locking mechanism according to claim 5, characterized in that, The locking part (130) includes a first nut (131) and a second nut (132) respectively disposed on both sides of the fixing part (110).

7. The locking mechanism according to claim 5, characterized in that, The locking target (200) includes a fixed end (210) and a movable end (220) that is retractable relative to the fixed end (210); either the movable end (220) or the adjusting part (120) has a support platform (221); the movable end (220) and the adjusting part (120) are connected by the support platform (221).

8. The locking mechanism according to claim 7, characterized in that, The support platform (221) is located on the side wall of the movable end (220). The end of the adjustment part (120) is provided with a gasket (121). The gasket (121) is connected to the support platform (221) by a fastener (122). A reinforcing rib (222) is provided between the support platform (221) and the movable end (220).

9. A support device, characterized in that, The support device includes: Support leg, the length of which is adjustable; The locking mechanism (100) as described in any one of claims 1 to 8, wherein the locking mechanism (100) is used to lock the support leg with the support leg as the locking target (200).

10. A trolley for tunnel construction, characterized in that, The trolley includes: The trolley body; the support device as described in claim 9, wherein the support device is disposed on the trolley body and is used to directly or indirectly abut against the tunnel wall.

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