Trolley system

Abstract

The utility model provides a trolley system. The trolley system comprises a plurality of trolleys. The multiple trolleys are sequentially and detachably connected in an end-to-end mode. The trolley comprises a frame and rollers. The frame comprises an upper frame which is transversely arranged, the upper frame extends in the front-back direction, side frames are symmetrically connected to the left side and the right side of the upper frame respectively, and the two side frames are vertically arranged or obliquely arranged outwards, so that the whole frame is of an II-shaped door type structure. And at least four rollers are uniformly distributed at the lower ends of the two side frames. The problems that due to the fact that the tunnel space is small when a small shield tunneling machine or a shield pipe jacking all-in-one machine excavates at the beginning, part of existing trolleys cannot enter a tunnel, or after part of existing trolleys enter the tunnel, the follow-up storage work cannot be met due to the fact that the size is too small are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a trolley system. Background Art

[0002] With the continuous development of urbanization and the rapid development and utilization of underground space, a large number of underground tunnels have been planned and constructed. The construction of some existing small tunnels usually uses small shield machines or shield-pipe jacking machines for excavation.

[0003] However, due to the small tunnel space during the initial excavation of a small shield machine or a shield pipe jacking machine, some existing trolleys cannot enter the tunnel, or after entering the tunnel, some existing trolleys are too small to meet the subsequent storage work. Utility Model Content

[0004] In view of the above problems, the present utility model is proposed to provide a trolley system that overcomes the above problems or at least partially solves the above problems. It can solve the problem that some existing trolleys cannot enter the tunnel due to the small tunnel space at the initial excavation of a small shield machine or a shield jacking machine, or after some existing trolleys enter the tunnel, they are unable to meet subsequent storage work due to their small size.

[0005] Specifically, the present invention provides a trolley system, comprising:

[0006] At least one trolley, wherein the head and tail ends of the trolleys are detachably connected in sequence. The trolley comprises a frame and rollers. The frame comprises a transversely arranged upper frame extending in a front-to-rear direction. Side frames are symmetrically connected to the left and right sides of the upper frame. The two side frames are arranged vertically or tilted outward to form a Type II portal structure. There are at least four rollers, evenly distributed at the lower ends of the two side frames.

[0007] Optionally, there are multiple trolleys, and the frontmost trolley among the multiple trolleys is a transport trolley. The transport trolley also includes a suspension lifting device, which is fixedly connected to the frame for lifting articles or equipment and transporting them along the length direction of the frame.

[0008] Optionally, the suspension hoisting device includes a track beam and a hoist, wherein the track beam extends in a front-to-rear direction and is fixedly connected to the lower end of the upper frame. The hoist is slidably connected to the track beam.

[0009] Optionally, the front end of the upper frame of the transport trolley is located in front of the side frame.

[0010] The track beam is equal to the length of the upper frame.

[0011] Optionally, the transport trolley further includes at least one reinforcing column, each of the reinforcing columns is tilted along the front-to-back direction at the front end of the side frame, and both ends of each reinforcing column are respectively fixedly connected to the upper frame and the side frame.

[0012] Optionally, the track beam is an I-shaped steel, and a slot is formed at the top end of the hoist, and the slot is cooperatively connected to the track beam.

[0013] Optionally, each of the rollers is tilted toward an end away from the vehicle frame and is rollingly connected to a side wall of the tunnel.

[0014] Optionally, each of the rollers is a polyurethane rubber-coated wheel.

[0015] Optionally, each of the rollers is in perpendicular contact with a tangent line of a side wall of the tunnel.

[0016] Optionally, the trolley system is a trolley system provided after the shield pipe jacking machine.

[0017] In the trolley system of the present invention, when the trolley system is used to start excavating a tunnel using a small shield machine or a shield pipe jacking machine, the length of the tunnel is relatively narrow, and the trolley system can be equipped with only one trolley, which is connected to the rear end of the small shield machine or the shield pipe jacking machine to follow the small shield machine or the shield pipe jacking machine to move along the tunnel.

[0018] Alternatively, when the trolley system is used for a small shield machine or a shield pipe jacking machine to excavate a longer tunnel, the length of the tunnel is long. The trolley system can follow the needs or set up multiple trolleys according to the length of the tunnel, so that multiple trolleys can follow the shield machine or shield pipe jacking machine to move along the tunnel.

[0019] The trolley system of the present invention can adjust the number of trolleys according to the length of the tunnel or the needs of construction, solving the problem that some of the existing trolleys cannot enter the tunnel due to the small tunnel space at the beginning of excavation of a small shield machine or a shield pipe jacking machine, or that some of the existing trolleys cannot meet the subsequent storage work after entering the tunnel due to their small size, thereby making the trolley system more compatible with the small shield machine or the shield pipe jacking machine.

[0020] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Some specific embodiments of the present application will be described in detail in the following with reference to the accompanying drawings, which are provided by way of illustration and are not intended to be limiting of the present application. The same reference numbers in different drawings identify the same or similar components or parts throughout the present disclosure. It should be understood that these drawings are not necessarily to scale. In the drawings:

[0022] Figure 1 is a schematic structural diagram of a transport trolley according to an embodiment of the present application.

[0023] Figure 2 is a schematic structural diagram of a transport trolley according to an embodiment of the present application.

[0024] Figure 3 is a schematic structural diagram of a trolley according to an embodiment of the present application.

[0025] Figure 4 is a schematic structural diagram of a trolley according to an embodiment of the present application.

[0026] Figure 5 is a schematic structural diagram of a trolley according to an embodiment of the present application.

[0027] List of reference signs:

[0028] 100, frame; 110, upper frame; 120, side frame;

[0029] 200, roller;

[0030] 300, track beam;

[0031] 400, reinforcing column;

[0032] 500, work platform. DETAILED DESCRIPTION

[0033] The trolley system of the embodiments of the present application will be described below with reference to Figures 1 to 5 In the description of the present embodiments, it should be understood that the terms "first", "second", etc. are used only to describe and are not to be construed as indicating or implying relative importance or a specific number of indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of the features, i.e. one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example two, three, etc., unless otherwise specifically limited. When a certain feature "includes or contains" a certain or certain features, unless otherwise specifically described, it indicates that other features are not excluded and can further include other features.

[0034] Unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," "fixed," and "coupled" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. That is, in the description of this embodiment, the first feature being "above," "above," and "above" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below," "below," or "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of the present embodiment, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0037] Figure 1 This is a schematic structural diagram of a transport trolley according to an embodiment of the present invention. Figure 1 As shown, and reference Figures 2 to 5 The present invention provides a trolley system. The trolley system includes at least one trolley. The front and rear ends of the at least one trolley are detachably connected. The trolley includes a frame 100 and rollers 200.

[0038] The vehicle frame 100 includes a transversely arranged upper frame 110, which extends in the front-to-rear direction. Side frames 120 are symmetrically connected to the left and right sides of the upper frame 110. The two side frames 120 are arranged vertically or tilted outward so that the vehicle frame 100 as a whole has a type II portal structure.

[0039] There are at least four rollers 200 evenly distributed at the lower ends of the two side frames 120 .

[0040] In this embodiment, the trolley can be used to place equipment or other items, thereby reducing the equipment inside the shield machine or shield pipe jacking machine, thereby increasing the space inside the shield machine or shield pipe jacking machine, making it easier for workers to operate.

[0041] When the trolley system is used for a small shield machine or a shield pipe jacking machine to start tunnel excavation, the trolley is connected to the rear end of the small shield machine or the shield pipe jacking machine to follow the small shield machine or the shield pipe jacking machine to move along the tunnel.

[0042] The trolley system of the present invention can adjust the number of trolleys according to the length of the tunnel or the needs of construction, solving the problem that some of the existing trolleys cannot enter the tunnel due to the small tunnel space at the beginning of excavation of a small shield machine or a shield pipe jacking machine, or that some of the existing trolleys cannot meet the subsequent storage work after entering the tunnel due to their small size, thereby making the trolley system more compatible with the small shield machine or the shield pipe jacking machine.

[0043] In some embodiments of the present invention, every two trolleys are connected by a connecting rope or a hook respectively provided on two adjacent side frames 120 of different trolleys.

[0044] In some embodiments of the present invention, a reinforcement structure is fixedly connected at the angle between the upper frame 110 and the side frame 120 to improve the stability of the trolley.

[0045] In this embodiment, the roller 200 is directly connected to the bottom of the side frame 120, so that the frame 100 as a whole has a type II door structure. Compared with the trolley with a laterally extending base provided on the lower side of the frame 100, the trolley of the present invention is not interfered with by the base when vehicles or pedestrians pass between the two side frames 120, making it convenient for people to pass between the two side frames 120 or for transporting and placing items.

[0046] In some embodiments of the present invention, there are multiple trolleys, and the frontmost trolley among the multiple trolleys is a transport trolley. The transport trolley also includes a suspension lifting device, which is fixedly connected to the frame 100 for lifting articles or equipment and transporting them along the length direction of the frame 100.

[0047] In this embodiment, the use of a suspension hoist for transporting pipe segments is used as an example. Using a suspension hoist to lift and transport the segments can reduce injuries that may occur during manual handling. Furthermore, the vehicle frame 100 of the present invention has a Type II portal structure. During segment transport, the movement of the segments is not interfered with by the vehicle frame 100, reducing the risk of collisions and accidents.

[0048] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the suspension hoisting device includes a track beam 300 and a hoist, wherein the track beam 300 extends in the front-rear direction and is fixedly connected to the lower end of the upper frame 110. The hoist is slidably connected to the track beam 300.

[0049] In this embodiment, the track beam 300 provides a track for the hoist crane to slide, allowing it to move along a predetermined path. A hoist crane typically has the functions of lifting, lowering, and horizontal movement. The hoist crane lifts objects or equipment and moves them along the track beam 300. The structure of a suspension crane that lifts and transports objects or equipment via the hoist crane facilitates installation and maintenance, reducing the difficulty and cost of installation and maintenance.

[0050] In some embodiments of the present invention, Figure 1 As shown, the front end of the upper frame 110 of the transport trolley is located in front of the side frame 120. The track beam 300 is equal to the length of the upper frame 110.

[0051] In this embodiment, the upper frame 110 supports the track beam 300, which extends to the front end of the side frame 120, allowing it to reach the area where items need to be lifted. Furthermore, the track beam 300 and the upper frame 110 are designed to be the same length, allowing the track beam 300 to be installed directly along the length of the upper frame 110 without requiring additional position adjustment, simplifying the installation and positioning of the track beam 300.

[0052] In some embodiments of the present invention, Figure 1 As shown, the transport trolley also includes at least one reinforcing column 400, each reinforcing column 400 is tilted along the front-to-back direction at the front end of the side frame 120, and both ends of each reinforcing column 400 are fixedly connected to the upper frame 110 and the side frame 120 respectively.

[0053] In this embodiment, the lower end of the upper frame 110 is connected to the track beam 300, and the upper frame 110 extends forward to the front end of the side frame 120, so that the lower end of the extended portion of the upper frame 110 is not supported by the side frame 120. When the hoist lifts objects or equipment, the extended portion of the upper frame 110 will be subjected to downward tension. The present invention is designed with a reinforcing column 400 supported between the side frame 120 and the upper frame 110, avoiding the occurrence of bending or breaking due to lack of support at the front end of the upper frame 110, so as to make the connection of the upper frame 110 more stable, thereby improving the structural strength and stability of the transport trolley.

[0054] In some embodiments of the present invention, Figure 2As shown, the track beam 300 is an I-shaped steel, and a slot is formed on the top of the hoist, which is connected to the track beam 300.

[0055] In this embodiment, the track beam 300 is constructed of I-shaped steel, which provides high structural strength and stability during use, thereby enhancing the stability of the hoist crane when lifting or transporting items. The coupling between the slot at the top of the hoist crane and the I-shaped track beam 300 simplifies the installation and positioning of the hoist crane.

[0056] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the trolley further includes a horizontally arranged working platform 500 , which is fixedly connected to the outer side of the frame 100 and spaced apart above the roller 200 .

[0057] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, there are two working platforms 500 , which are respectively arranged on both sides of the vehicle frame 100 in the left and right directions.

[0058] In some embodiments of the present invention, Figure 1 As shown, there are six rollers 200 evenly distributed at the lower ends of the two side frames 120 to improve the stability of the trolley.

[0059] In some embodiments of the present invention, each roller 200 is tilted toward an end away from the vehicle frame 100 and is rollingly connected to the side wall of the tunnel.

[0060] In this embodiment, the tunnel formed by shield or jacking pipe is usually circular in cross-section, and the rollers 200 arranged to be tilted outward are in rolling connection with the side walls of the tunnel, so that there is no need to lay tracks at the bottom of the tunnel, which avoids workers from wasting physical energy and time on laying and repairing tracks, thereby saving the overall time of tunnel construction.

[0061] In some embodiments of the present invention, each roller 200 is a polyurethane-coated wheel to prevent the roller 200 from damaging the pipe segments installed on the tunnel side wall when rolling.

[0062] In some embodiments of the present invention, each roller 200 is in perpendicular contact with a tangent line of the side wall of the tunnel.

[0063] In this embodiment, taking the tunnel as a circular cross-section as an example, when the roller 200 contacts the side wall of the tunnel, the surface of the roller 200 at the contact point of the roller 200 is perpendicular to the tangent direction of the tunnel side wall at that point, so as to reduce the sliding friction of the roller 200 during the movement, thereby reducing the energy consumption of the trolley to move.

[0064] Preferably, the angle between the roller 200 and the horizontal plane is between 45° and 60°.

[0065] In this embodiment, when the angle between the roller 200 and the horizontal plane is less than 45°, that is, when the roller 200 is close to horizontal, the roller 200 is subjected to a large downward torque from the frame 100, resulting in poor stability of the roller 200, which can easily cause the roller 200 to deform or break and fall off from the lower end of the frame 100.

[0066] In some embodiments of the present invention, the trolley system is a trolley system equipped with a shield pipe jacking machine.

[0067] In this embodiment, the shield pipe jacking machine tows a trolley ( Figure 1 ), after pushing forward a certain distance, switch to shield mode and then tow multiple trolleys behind the trolley as needed ( Figure 3 ), making the trolley system more compatible with small shield machines or shield jacking machines.

[0068] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention can be directly determined or deduced from the contents disclosed herein without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. A trolley system, characterized in that: include: At least one trolley, at least one of the trolleys is detachably connected at the head and tail ends in sequence; the trolley includes a frame and rollers, the frame includes a transversely arranged upper frame, the upper frame extends in the front-to-back direction, and the left and right sides of the upper frame are symmetrically connected with side frames, and the two side frames are vertically arranged or tilted outward so that the frame as a whole presents a type II door structure; there are at least four rollers, which are evenly distributed at the lower ends of the two side frames.

2. The trolley system according to claim 1, characterized in that: There are multiple trolleys, and the frontmost trolley among the multiple trolleys is a transport trolley. The transport trolley also includes a suspension lifting device, which is fixedly connected to the frame for lifting articles or equipment and transporting them along the length direction of the frame.

3. The trolley system according to claim 2, characterized in that: The suspension lifting device includes a track beam and a hoist. The track beam extends in the front-rear direction and is fixedly connected to the lower end of the upper frame; the hoist is slidably connected to the track beam.

4. The trolley system according to claim 3, characterized in that: The front end of the upper frame of the transport trolley is located in front of the side frame; The track beam is equal to the length of the upper frame.

5. The trolley system according to claim 4, characterized in that: The transport trolley further includes at least one reinforcing column, each of which is tilted along the front-to-back direction at the front end of the side frame, and both ends of each reinforcing column are fixedly connected to the upper frame and the side frame respectively.

6. The trolley system according to claim 3, characterized in that: The track beam is an I-shaped steel, and a slot is formed on the top of the hoist, and the slot is cooperatively connected to the track beam.

7. The trolley system according to claim 1, wherein: Each of the rollers is tilted toward an end away from the vehicle frame and is rollingly connected to the side wall of the tunnel.

8. The trolley system according to claim 7, characterized in that: Each of the rollers is a polyurethane rubber-coated wheel.

9. The trolley system according to claim 7, characterized in that: Each of the rollers is in perpendicular contact with a tangent line of the side wall of the tunnel.

10. The trolley system according to claim 1, characterized in that: The trolley system is a trolley system equipped at the rear of the shield pipe jacking machine.

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