A trolley facilitating installation of a wind tunnel cloth in a tunnel

Abstract

The utility model belongs to the field of tunnel construction technology, especially relates to a trolley convenient to wind cylinder cloth installation in tunnel. The mobile trolley in this trolley can drive the support rod to move, when hanging the wind cylinder cloth, first, hang the first metal ring on the wind cylinder cloth on the hook on the tunnel top, make part of the wind cylinder cloth be in the state of suspension, then adjust the height of the installation platform and the support rod through the hydraulic cylinder and telescopic support arm, make the installation platform and the support rod move to the area close to the tunnel top, drive the mobile trolley to move along the extension direction of the tunnel, push the wind cylinder cloth of the suspension part by the support rod, the wind cylinder cloth of the suspension part is close to the tunnel top under the action of the pushing force of the support rod, and is hung by the staff on the installation platform, so that the installation of the wind cylinder cloth is completed easily and quickly, the failure rate of the metal ring hanging is reduced, thereby the labor of installing the wind cylinder cloth is reduced, and the installation efficiency of the wind cylinder cloth is improved.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction technology, and specifically relates to a trolley that facilitates the installation of ventilation ducts in tunnels. Background Technology

[0002] In tunnel construction, the installation of ventilation duct cloth is a key procedure to ensure tunnel ventilation safety.

[0003] In existing technology, the installation of the ventilation duct fabric is carried out in the following ways: Workers need to stand on the installation platform of the mobile trolley and use the telescopic support arm on the mobile trolley to push the installation platform, adjust the height of the installation platform, and send the workers standing on the installation platform to an area close to the top of the tunnel. The workers use simple support poles to lift the metal rings on the suspended ventilation duct cloth to the top of the tunnel and hang them on the hooks pre-embedded in the top of the tunnel. The installation of the ventilation duct cloth is completed when all the metal rings on the ventilation duct cloth are hung on the hooks one by one along the length of the tunnel.

[0004] The aforementioned lifting of the metal rings is labor-intensive and requires workers to repeatedly adjust the height of the mobile trolley installation platform. In addition, the simple method of hanging the metal rings using support rods in the dimly lit tunnel environment has a high error rate, which prolongs the hanging time of a single metal ring, reduces the hanging efficiency, and leads to a significant reduction in the installation efficiency of the ventilation duct cloth. Utility Model Content

[0005] This utility model provides a trolley for easy installation of ventilation duct cloth in tunnels, which solves the technical problems in the prior art. When installing ventilation duct cloth, the labor intensity of lifting the metal ring is high, and the workers need to repeatedly adjust the height of the moving trolley installation platform. At the same time, the use of support rods to simply hang the metal ring in the dim tunnel environment has a high error rate, which greatly reduces the installation efficiency of ventilation duct cloth.

[0006] This utility model is achieved through the following technical solution: A trolley for facilitating the installation of ventilation duct fabric in tunnels includes a mobile trolley, a telescopic support arm, and an installation platform; one end of the telescopic support arm is hinged to the mobile trolley, and the mobile trolley is equipped with a hydraulic cylinder, the telescopic end of which is hinged to the side wall of the telescopic support arm for adjusting the angle between the telescopic support arm and the horizontal plane; the installation platform is located at the end of the telescopic support arm away from the mobile trolley; and a support rod is also included. The support rod is placed horizontally on the side of the installation platform facing the front of the mobile trolley, and the axis of the support rod is perpendicular to the forward direction of the mobile trolley.

[0007] To better realize this utility model, the above structure is further optimized. The mounting platform is provided with a mounting frame on the side facing the front of the mobile trolley. The support rod is rotatably mounted on the mounting frame. The rotation axis of the support rod is parallel to the horizontal plane and perpendicular to the forward direction of the mobile trolley.

[0008] To better realize this utility model, further optimizations are made to the above structure. The mounting frame is a U-shaped structure, the plane on which the mounting frame is located is parallel to the horizontal plane, and the opening of the mounting frame faces the forward direction of the mobile trolley. The two ends of the support rod are respectively rotatably mounted at both ends of the mounting frame.

[0009] To better realize this utility model, the above structure is further optimized. Two limiting rings are sleeved on the support rod. The two limiting rings are respectively set close to both ends of the support rod, and the distance between the two limiting rings matches the width of the duct cloth.

[0010] To better realize this utility model, the above structure is further optimized by providing anti-slip texture on the circumferential sidewall of the support rod.

[0011] To better realize this utility model, the above structure is further optimized by providing a protective railing around the installation platform to prevent workers from falling off the platform.

[0012] Compared with the prior art, this utility model has the following advantages: The trolley provided by this utility model facilitates the installation of ventilation duct cloth in tunnels. The mobile trolley can move the support rod. When hanging the ventilation duct cloth, workers can first hang the first metal ring on the ventilation duct cloth on the hook at the top of the tunnel, suspending part of the ventilation duct cloth. Then, the angle between the telescopic support arm and the horizontal plane is adjusted by the hydraulic cylinder, and the height of the installation platform and support rod is adjusted by the telescopic support arm, moving the installation platform and support rod to an area close to the top of the tunnel. The mobile trolley is then driven to move along the tunnel's extension direction. The support rod pushes the suspended part of the ventilation duct cloth, causing it to move closer to the top of the tunnel under the pushing force of the support rod. Workers on the installation platform then hang the cloth, easily and quickly completing the installation of the ventilation duct cloth, reducing the error rate of hanging the metal ring, thereby reducing labor costs and improving the installation efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of a trolley for facilitating the installation of ventilation duct cloth in tunnels, according to this utility model.

[0015] Figure 2 This is a diagram showing the coordination between the support rod and the mounting frame of a trolley for facilitating the installation of ventilation ducts in tunnels, according to this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of a trolley for facilitating the installation of ventilation duct cloth in tunnels, as per this utility model.

[0017] In the picture: 1. Mobile trolley; 11. Hydraulic cylinder; 2. Telescopic support arm; 3. Installation platform; 31. Guardrail; 32. Mounting frame; 4. Support rod; 41. Limiting ring; 5. Ventilation duct cloth. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In the embodiments of this application, such as Figures 1 to 3 As shown, this trolley is mainly used for the installation of ventilation duct fabric 5 in tunnels. The trolley includes a mobile trolley 1, a telescopic support arm 2, an installation platform 3, and support rods 4. (See attached image.) Figure 1 ;in, One end of the telescopic support arm 2 is hinged to the mobile trolley 1, and the other end of the telescopic support arm 2 can extend and retract along its length. The mobile trolley 1 is equipped with a hydraulic station and a hydraulic cylinder 11. The hydraulic station's supply end is connected to the hydraulic cylinder 11, and the hydraulic station can supply oil to the hydraulic cylinder 11 to realize the extension and retraction of the hydraulic cylinder 11. The extension and retraction end of the hydraulic cylinder 11 is hinged to the side wall of the telescopic support arm 2. The operator can control the extension and retraction of the hydraulic cylinder 11 to adjust the angle between the telescopic support arm 2 and the horizontal plane. The installation platform 3 is set at the end of the telescopic support arm 2 away from the mobile trolley 1. The support rod 4 is placed horizontally on the side of the mounting platform 3 facing the front of the moving trolley 1, and the axis of the support rod 4 is perpendicular to the forward direction of the moving trolley 1.

[0022] When installing the ventilation duct cloth 5, workers can first hang the first metal ring on the ventilation duct cloth 5 onto the hook at the top of the tunnel, so that part of the ventilation duct cloth 5 is in a suspended state. In this state, one end of the ventilation duct cloth 5 is suspended from the top of the tunnel, the middle part of the ventilation duct cloth 5 is suspended in the tunnel, and the rest rests at the bottom of the tunnel. (Refer to...) Figure 3 The state of the 5-piece stroke tube cloth; Subsequently, workers can control the hydraulic station to drive the hydraulic cylinder 11, adjust the angle between the telescopic support arm 2 and the horizontal plane, and adjust the length of the telescopic support arm 2, so that the installation platform 3 and support rod 4 can be moved to an area close to the top of the tunnel. See [link / reference needed]. Figure 3 This allows the workers on the installation platform 3 to manually hang the metal rings on the ventilation duct cloth 5 onto the hooks at the top of the tunnel, or to use tools to hang the metal rings on the ventilation duct cloth 5 onto the hooks at the top of the tunnel. At this time, the staff can drive the mobile trolley 1 to move along the extension direction of the tunnel, and use the support rod 4 to push the suspended part of the ventilation duct cloth 5 to the top of the tunnel instead of manually lifting the metal ring on the ventilation duct cloth 5 to the top of the tunnel, so as to reduce the labor intensity of installing the ventilation duct cloth 5; the suspended part of the ventilation duct cloth 5 is pushed towards the top of the tunnel by the support rod 4, and the staff on the installation platform 3 hang the metal ring on the ventilation duct cloth 5 that has been pushed to the top of the tunnel by the support rod 4 on the hook at the top of the tunnel. The ventilation duct cloth 5, which falls at the bottom of the tunnel, will be suspended into the tunnel by the ventilation duct cloth 5 that is hung at the top of the tunnel. The mobile trolley 1 will continue to move along the extension direction of the tunnel and repeat the above hanging steps. This will make it easy and quick to complete the installation of the ventilation duct cloth 5, reduce the error rate of metal ring hanging, and thus improve the installation efficiency of the ventilation duct cloth 5.

[0023] It should be noted that the aforementioned telescopic support arm 2 is a telescopic boom, an important component of existing cranes. Its length is adjusted via hydraulic cylinder drive or wire rope traction, primarily used to expand the working range and improve work efficiency. Telescopic booms typically consist of multiple boom sections (such as a main boom and a secondary boom), employing hydraulic telescopic, folding, or composite structures to adjust their length according to operational needs. For example, the telescopic boom of a truck crane extends and retracts through hydraulic cylinders, while a folding boom folds and retracts via hinge points. In this embodiment, the telescopic support arm 2 is a hydraulically telescopic boom. Since the telescopic support arm 2 is existing technology, this invention does not modify its structure and will not be described in detail here. The telescopic support arm 2 is also supplied with oil by the aforementioned hydraulic station to achieve the telescopic extension and retraction of the telescopic support arm 2.

[0024] In some embodiments, the mounting platform 3 described above is provided with a mounting bracket 32 ​​on the side facing the front of the mobile trolley 1, for participation. Figure 1 and Figure 3 The support rod 4 is rotatably mounted on the mounting frame 32. The rotation axis of the support rod 4 is parallel to the horizontal plane and perpendicular to the forward direction of the moving trolley 1. When the support rod 4 contacts the suspended ventilation duct cloth 5, the support rod 4 can push the suspended ventilation duct cloth 5 towards the top of the tunnel. As the moving trolley 1 continues to move forward, the support rod 4 rotates around its axis of rotation due to the friction between the ventilation duct cloth 5 and the circumferential side wall of the support rod 4, thus preventing the support rod 4 from pulling the ventilation duct cloth 5 off the top of the tunnel.

[0025] Preferably, the mounting bracket 32 ​​described above has a U-shaped structure, participating in... Figure 2 The mounting frame 32 is horizontally set on the side of the mounting platform 3 facing the head of the mobile trolley 1. That is, the plane on which the mounting frame 32 is located is parallel to the horizontal plane, and the opening of the mounting frame 32 faces the front of the mobile trolley 1. The aforementioned support rod 4 is located in the mounting frame 32, and both ends of the support rod 4 are rotatably mounted at both ends of the mounting frame 32.

[0026] In some embodiments, two limiting rings 41 are fitted onto the support rod 4, see [reference]. Figure 2 Two limiting rings 41 are respectively set near the two ends of the support rod 4, and the distance between the two limiting rings 41 matches the width of the duct cloth 5. When the duct cloth 5 is pushed, the two limiting rings 41 can restrict the position of the duct cloth 5, preventing the duct cloth 5 from sliding along the axis of the support rod 4 and detaching from the support rod 4, so as to make it more convenient for the trolley to push the duct cloth 5.

[0027] It should be noted that the aforementioned limiting ring 41 can be installed on the support rod 4 by means of threaded connection or by welding. The specific method can be determined according to the site requirements. If there are multiple sizes (widths) of duct cloth 5 at the construction site that need to be pushed, the limiting ring 41 that is threadedly connected to the support rod 4 can be selected. When pushing duct cloth 5 of different sizes, the staff can adjust the distance between the two limiting rings 41 to adapt to the pushing of duct cloth 5 of different sizes. If only one size of duct cloth 5 needs to be pushed at the construction site, a limiting ring 41 welded to the support rod 4 can be selected.

[0028] In some embodiments, the circumferential sidewall of the support rod 4 described above is provided with anti-slip texture, see [reference]. Figure 2 The anti-slip texture increases the friction between the circumferential sidewall of the support rod 4 and the air duct cloth 5, preventing the air duct cloth 5 from sliding along the axial direction of the support rod 4, so that the support rod 4 can better complete the pushing of the air duct cloth 5.

[0029] In some embodiments, the installation platform 3 is provided with a guardrail 31 around its perimeter to prevent workers from falling off the installation platform 3, thereby improving the safety of the vehicle during operation.

[0030] It should be noted that the width of the installation platform 3 mentioned above is greater than the width of the ventilation duct cloth 5; When the support rod 4 pushes the ventilation duct cloth 5 to the top of the tunnel, the workers can stand on the edge of the installation platform 3 and hang the metal ring on the ventilation duct cloth 5 on the hook at the top of the tunnel to make it easier to hang the metal ring.

[0031] In some embodiments, the metal ring on the duct cloth 5 can be replaced by a connecting ring made of elastic rubber material, which has good tensile resilience. The hook opening is equipped with an arc-shaped elastic buckle, which is connected to the hook by a spring plate to form an automatic locking structure; When the construction worker gently pushes the connecting ring into the opening of the hook, the elastic buckle is squeezed and retracts inward. After the connecting ring slides into the hook, the buckle automatically resets and closes the opening to prevent the connecting ring from detaching from the hook. The connection ring hook of this structure significantly reduces the time spent working at heights and improves fixing efficiency and safety.

[0032] Preferably, the spacing between the multiple hooks on the tunnel top is perfectly matched with the spacing between the multiple metal rings on the ventilation duct cloth 5, so that when the multiple metal rings are hung on the multiple hooks, the ventilation duct cloth 5 is in a straight state and the ventilation duct cloth 5 is fully unfolded (the channel inside the ventilation duct cloth 5 is unfolded), so that air can flow in the channel inside the ventilation duct cloth 5 to meet the tunnel ventilation requirements.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A trolley for facilitating the installation of ventilation duct fabric in a tunnel, comprising a mobile trolley (1), a telescopic support arm (2), and an installation platform (3); one end of the telescopic support arm (2) is hinged to the mobile trolley (1), and a hydraulic cylinder (11) is provided on the mobile trolley (1), the telescopic end of the hydraulic cylinder (11) being hinged to the side wall of the telescopic support arm (2) for adjusting the angle between the telescopic support arm (2) and the horizontal plane; the installation platform (3) is located at the end of the telescopic support arm (2) away from the mobile trolley (1); characterized in that: It also includes a support rod (4); The support rod (4) is placed horizontally on the side of the installation platform (3) facing the front of the mobile trolley (1), and the axis of the support rod (4) is perpendicular to the forward direction of the mobile trolley (1).

2. The trolley for facilitating the installation of ventilation ducts in tunnels according to claim 1, characterized in that: The installation platform (3) is provided with an installation frame (32) on the side facing the front of the mobile trolley (1). The support rod (4) is rotatably mounted on the installation frame (32). The rotation axis of the support rod (4) is parallel to the horizontal plane and perpendicular to the forward direction of the mobile trolley (1).

3. The trolley for facilitating the installation of ventilation ducts in tunnels according to claim 2, characterized in that: The mounting frame (32) has a U-shaped structure. The plane on which the mounting frame (32) is located is parallel to the horizontal plane, and the opening of the mounting frame (32) faces the forward direction of the mobile trolley (1). The two ends of the support rod (4) are respectively rotatably mounted at both ends of the mounting frame (32).

4. The trolley for facilitating the installation of ventilation ducts in tunnels according to claim 3, characterized in that: Two limiting rings (41) are fitted on the support rod (4). The two limiting rings (41) are respectively set close to the two ends of the support rod (4), and the distance between the two limiting rings (41) matches the width of the duct cloth (5).

5. The trolley for facilitating the installation of ventilation ducts in tunnels according to claim 4, characterized in that: The circumferential sidewall of the support rod (4) is provided with anti-slip texture.

6. The trolley for facilitating the installation of ventilation ducts in tunnels according to claim 1, characterized in that: The installation platform (3) is provided with a guardrail (31) around its perimeter to prevent workers from falling off the installation platform (3).

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