Trolley

Abstract

The utility model provides a trolley with the distance between walking mechanisms on the two sides adjustable so as to improve the applicability of the trolley. The trolley comprises an objective table and a walking mechanism, at least one guide rail which is transversely arranged and used for supporting the objective table is installed below the objective table, a first supporting frame which is in sliding connection with the guide rail is installed at one end of the guide rail, and a second supporting frame which is in sliding connection with the guide rail is installed at the other end of the guide rail. A first locking mechanism is arranged on the first supporting frame, and a second locking mechanism is arranged on the second supporting frame. The walking mechanism comprises a left side walking mechanism arranged on one side of the objective table and a right side walking mechanism arranged on the other side of the objective table, the left side walking mechanism is installed on the first supporting frame, and the right side walking mechanism is installed on the second supporting frame. The vehicle-mounted road has wider applicability, and is particularly suitable for occasions with changeable road widths and large road width differences, such as mountainous areas and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile trolleys, and specifically relates to a handcart. Background Art

[0002] A handcart, also known as a manual trolley or a hand trailer, is a convenient manual transportation tool. It mainly consists of a frame, a traveling mechanism, and a platform for loading goods. Users can move the handcart by pushing or pulling the handle, thus easily carrying heavy or large quantities of items. The traveling mechanism generally adopts a wheel or a crawler-type traveling mechanism. Compared with wheels, the crawler-type traveling mechanism has better passability, can better adapt to complex terrains such as mountains and deserts, and has better climbing and obstacle-crossing capabilities. The distance between the traveling mechanisms on both sides of the existing handcart is set to be non-adjustable.

[0003] However, during use, users, especially those in mountainous areas, often face complex situations where the road width varies and the difference in road widths is large. The non-adjustable distance between the traveling mechanisms on both sides of the current handcart results in it being able to only travel on roads wider than the distance between the traveling mechanisms on both sides, which limits the use of the handcart. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a handcart with adjustable distance between the traveling mechanisms on both sides to improve the applicability of the handcart.

[0005] The technical solution adopted by the utility model to solve its technical problems is: The handcart includes a load-carrying platform and a traveling mechanism. At least one horizontally arranged guide rail for supporting the load-carrying platform is installed below the load-carrying platform. One end of the guide rail is installed with a first support frame slidably connected to the guide rail, and the other end is installed with a second support frame slidably connected to the guide rail. The first support frame is provided with a first locking mechanism for locking the position of the first support frame on the guide rail, and the second support frame is provided with a second locking mechanism for locking the position of the second support frame on the guide rail;

[0006] The traveling mechanism includes a left traveling mechanism arranged on one side of the load-carrying platform and a right traveling mechanism arranged on the other side of the load-carrying platform. The left traveling mechanism is installed on the first support frame, and the right traveling mechanism is installed on the second support frame.

[0007] Further, the guide rail has an I-shaped cross-section. The wing plate at one end of the guide rail is fitted and installed on the lower surface of the load-carrying platform. The first support frame is installed with a first left convex block slidably engaged with the groove on one side of the guide rail and a first right convex block slidably engaged with the groove on the other side of the guide rail;

[0008] A second left convex block that is slidably engaged with a groove on one side of the guide rail and a second right convex block that is slidably engaged with a groove on the other side of the guide rail are installed on the second support frame.

[0009] Further, at least three adjustment holes are provided in the web of the guide rail at intervals along the length direction of the guide rail. A bolt or screw of the first locking mechanism is installed on the first right convex block, and the other end of the bolt or screw passes through one of the adjustment holes and is connected to the first left convex block, thereby locking the first support frame and pulling the first left convex block;

[0010] A bolt or screw of the second locking mechanism is installed on the second right convex block, and the other end of the bolt or screw passes through another one of the adjustment holes and is connected to the second left convex block, thereby locking the second support frame and pulling the second left convex block.

[0011] Further, both the left traveling mechanism and the right traveling mechanism are crawler traveling mechanisms.

[0012] Further, a push handle is provided on the loading platform.

[0013] Further, the push handle is hinged to the loading platform through a horizontal hinge shaft, and a spring pin that is inserted and engaged with the loading platform to lock the push handle in a vertical state is provided on the push handle.

[0014] The beneficial effects of the present utility model are as follows: For the trolley of the present utility model, the left traveling mechanism 5 is installed on the first support frame 3, and the right traveling mechanism 6 is installed on the second support frame 4. The first support frame 3 and the second support frame 4 are respectively slidably connected to both ends of the guide rail 2. The distance between the left traveling mechanism 5 and the right traveling mechanism 6 can be adjusted, so that corresponding adjustments can be made according to the width of the road. Therefore, the trolley can be applied to more roads with different widths, and its applicability is wider, and it is particularly suitable for use in occasions such as mountainous areas where the road width varies greatly and the road width difference is large. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 the left view of

[0017] Figure 3 is Figure 1 the enlarged view of part A of

[0018] Figure 4 is a schematic structural diagram of the sliding connection between the second support frame and the guide rail;

[0019] Figure 5 is a sectional structure diagram of the guide rail;

[0020] Figure 6 is another structural schematic diagram of the present utility model;

[0021] As shown in the figure: the loading platform 1, the guide rail 2, the first support frame 3, the second support frame 4, the left walking mechanism 5, the right walking mechanism 6, the first locking mechanism 7, the second locking mechanism 8, the push handle 9, the hinge shaft 11, the spring pin 12, the wing plate 21, the web plate 22, the adjustment hole 23, the first left convex block 31, the first right convex block 32, the second left convex block 41, and the second right convex block 42. Specific embodiments

[0022] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] As Figure 1 , Figure 2 shown, the trolley of the present utility model includes a loading platform 1 and a walking mechanism. At least one guide rail 2 is installed below the loading platform 1 and is arranged horizontally (in the width direction of the loading platform) for supporting the loading platform 1. One end of the guide rail 2 is installed with a first support frame 3 slidably connected to the guide rail 2, and the other end is installed with a second support frame 4 slidably connected to the guide rail 2. The first support frame 3 is provided with a first locking mechanism 7 for locking the position of the first support frame 3 on the guide rail 2, and the second support frame 4 is provided with a second locking mechanism 8 for locking the position of the second support frame 4 on the guide rail 2. The walking mechanism includes a left walking mechanism 5 arranged on one side of the loading platform 1 and a right walking mechanism 6 arranged on the other side of the loading platform 1. The left walking mechanism 5 is installed on the first support frame 3, and the right walking mechanism 6 is installed on the second support frame 4.

[0024] In order to better support the loading platform 1, in the embodiment of the present utility model, a guide rail 2 is respectively provided at the front and rear ends of the loading platform 1.

[0025] The left walking mechanism 5 and the right walking mechanism 6 mainly play a role in supporting and facilitating the movement of the loading platform 1, and specifically may be a roller or a crawler walking mechanism. In order to make the trolley have better passability, the left walking mechanism 5 and the right walking mechanism 6 preferably adopt a crawler walking mechanism. The crawler walking mechanism can refer to various existing crawler walking mechanisms and will not be specifically described here.

[0026] The trolley of the present utility model moves and supports the load platform 1 through the left walking mechanism 5 and the right walking mechanism 6 arranged on both sides of the load platform 1, ensuring the stability of the load platform 1 during the walking movement. Since the left walking mechanism 5 is installed on the first support frame 3, and the right walking mechanism 6 is installed on the second support frame 4, and the first support frame 3 and the second support frame 4 are respectively slidably connected to both ends of the guide rail 2. In this way, according to the actual situation, for example, when the road width is too narrow to allow the trolley to pass, the first support frame 3 and the second support frame 4 can be moved towards each other to adjust the distance between the left walking mechanism 5 and the right walking mechanism 6 to adapt to the width of the road, so that the trolley can smoothly travel on the narrow road. After the positions of the first support frame 3 and the second support frame 4 are adjusted, the positions of the first support frame 3 and the second support frame 4 on the guide rail 2 can be locked through the first locking mechanism 7 and the second locking mechanism 8 to prevent their positions from changing during the movement of the trolley.

[0027] The distance between the left walking mechanism 5 and the right walking mechanism 6 of the trolley of the present utility model can be adjusted, so that it can be adjusted accordingly according to the width of the road. Therefore, the trolley can be applied to more roads with different widths, and its applicability is wider, especially suitable for occasions such as mountainous areas where the road width varies greatly and the road width gap is large.

[0028] Specifically, the first locking mechanism 7 and the second locking mechanism 8 can be bolts, screws or the like.

[0029] The guide rail 2 can adopt various shapes of guide rails such as trapezoidal, circular, etc. As Figures 3 to 5 shown, the guide rail 2 has an I-shaped cross-section structure, including a web 22 and flange plates 21 arranged at both ends of the web 22. The guide rail can be an H-shaped steel or an I-beam. One end of the flange plate 21 of the guide rail 2 is fitted and installed on the lower surface of the load platform 1. The first support frame 3 is installed with a first left convex block 31 that slidably cooperates with the groove on one side of the guide rail 2 and a first right convex block 32 that slidably cooperates with the groove on the other side of the guide rail 2; the second support frame 4 is installed with a second left convex block 41 that slidably cooperates with the groove on one side of the guide rail 2 and a second right convex block 42 that slidably cooperates with the groove on the other side of the guide rail 2. The guide rail 2 adopts an I-shaped cross-section, one end of the flange plate of the guide rail is fitted and installed on the bottom surface of the load platform 1, the first support frame 3 is slidably connected to the guide rail 2 through the first left convex block 31 and the first right convex block 32, and the second support frame 4 is slidably connected to the guide rail 2 through the second left convex block 41 and the second right convex block 42. The force transmission between the support frame and the guide rail, and between the guide rail and the load platform is good, the guide rail is not easily deformed, which is beneficial to ensuring the smooth sliding of the second support frame and the first support frame and the load-bearing performance of the trolley.

[0030] During the movement of the trolley, especially when the road surface is uneven, the first left bump 31 and the first right bump 32, and the second left bump 41 and the second right bump 42 are prone to deformation under the influence of the overturning force. As Figure 3 and Figure 4 shown, preferably in the present invention, at least three adjustment holes 23 are provided on the web 22 of the guide rail 2 and are arranged at intervals along the length direction of the guide rail 2. The first locking mechanism 7 is a bolt or a screw installed on the first right bump 32, and the other end of the bolt or the screw passes through one of the adjustment holes 23 to be connected to the first left bump 31, so as to lock the first support frame 3 and pull the first left bump 31; the second locking mechanism 8 is a bolt or a screw installed on the second right bump 42, and the other end of the bolt or the screw passes through another one of the adjustment holes 23 to be connected to the second left bump 41, so as to lock the second support frame 4 and pull the second left bump 41. The above structure can lock the first support frame 3 through the first locking mechanism 7 while pulling the first left bump 31 and the end of the first right bump 32 cooperating with the guide rail. Through the second locking mechanism 8, the second support frame 4 can be locked while pulling the second left bump 41 and the end of the second right bump 42 cooperating with the guide rail. The first left bump 31 and the first right bump 32, and the second left bump 41 and the second right bump 42 are better stressed and are not easily deformed under the influence of the overturning force. When it is necessary to adjust the distance between the left walking mechanism 5 and the right walking mechanism 6, one end of the first locking mechanism 7 and the second locking mechanism 8 is taken out from the corresponding adjustment hole 23, and then the first support frame 3 and the second support frame 4 can be moved to the position of the adjustment hole 23 matching the width of the road edge, so as to adjust the distance between the left walking mechanism 5 and the right walking mechanism 6.

[0031] In the present invention, each bump can be arranged on the corresponding support frame by means of welding, bolt connection, etc. Of course, the bump and the corresponding support frame can also adopt an integral structure.

[0032] In order to facilitate the movement of the trolley, a push handle 9 is provided on the loading platform 1. The push handle 9 can be connected to the loading platform 1 by means of welding, bolt connection, etc. As Figure 6 shown, in the embodiment of the present invention, the push handle 9 is hinged to the loading platform 1 through a horizontal hinge shaft 11, and a spring pin 12 is provided on the push handle 9 and is in plug-in fit with the loading platform 1 to lock the push handle 9 in the vertical state. In this way, when the push handle 9 is not in use, the spring pin 12 can be first pushed to disengage the spring pin 12 from the loading platform 1, so that the handle can be turned downwards and stored on the loading platform 1, which is convenient for the placement of the trolley; when the handle needs to be used, the push handle 9 can be rotated upwards again. When the push handle 9 rotates to the vertical state, the spring pin 12 can automatically pop out and be in plug-in fit with the loading platform 1, so as to lock the push handle 9, which is convenient for personnel to use.

[0033] The trolley of the utility model is also provided with a braking mechanism (not shown in the figure). The braking mechanism adopts the existing braking mechanism of a trolley.

Claims

1. A trolley, comprising a loading platform (1) and a traveling mechanism, characterized in that: Below the stage (1), at least one horizontally arranged guide rail (2) for supporting the stage (1) is installed. One end of the guide rail (2) is installed with a first support frame (3) slidably connected to the guide rail (2), and the other end is installed with a second support frame (4) slidably connected to the guide rail (2). A first locking mechanism (7) for locking the position of the first support frame (3) on the guide rail (2) is provided on the first support frame (3), and a second locking mechanism (8) for locking the position of the second support frame (4) on the guide rail (2) is provided on the second support frame (4); The traveling mechanism includes a left traveling mechanism (5) arranged on one side of the stage (1) and a right traveling mechanism (6) arranged on the other side of the stage (1). The left traveling mechanism (5) is installed on the first support frame (3), and the right traveling mechanism (6) is installed on the second support frame (4).

2. The trolley according to claim 1, characterized in that: The guide rail (2) has an I-shaped cross-section. The wing plate (21) at one end of the guide rail (2) is fitted and installed on the lower surface of the stage (1). A first left convex block (31) slidably engaged with the groove on one side of the guide rail (2) and a first right convex block (32) slidably engaged with the groove on the other side of the guide rail (2) are installed on the first support frame (3); A second left convex block (41) slidably engaged with the groove on one side of the guide rail (2) and a second right convex block (42) slidably engaged with the groove on the other side of the guide rail (2) are installed on the second support frame (4).

3. The trolley according to claim 2, characterized in that: At least three adjustment holes (23) are arranged at intervals along the length direction of the web (22) of the guide rail (2). The first locking mechanism (7) is a bolt or screw installed on the first right convex block (32). The other end of the bolt or screw passes through one of the adjustment holes (23) and is connected to the first left convex block (31), thereby locking the first support frame (3) and pulling the first left convex block (31); The second locking mechanism (8) is a bolt or screw installed on the second right convex block (42). The other end of the bolt or screw passes through another one of the adjustment holes (23) and is connected to the second left convex block (41), thereby locking the second support frame (4) and pulling the second left convex block (41).

4. The trolley according to claim 1, characterized in that: Both the left traveling mechanism (5) and the right traveling mechanism (6) are crawler-type traveling mechanisms.

5. The trolley according to claim 1, characterized in that: A push handle (9) is provided on the stage (1).

6. The trolley according to claim 5, characterized in that: The push handle (9) is hinged to the stage (1) through a horizontal hinge shaft (11). A spring pin (12) for plugging and mating with the stage (1) to lock the push handle (9) in the vertical state is provided on the push handle (9).

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