Crawler device and cart

Abstract

The utility model relates to the technical field of carts, in particular to a crawler device and a cart. A crawler belt device comprises a crawler belt unit, the crawler belt unit comprises a plurality of crawler belt blocks, the crawler belt blocks are sequentially hinged to form an integrated closed structure, protrusions extending in the walking direction are arranged on the crawler belt blocks, and a through channel is reserved between every two adjacent crawler belt blocks; a support frame; the wheel set comprises a plurality of crawler wheels arranged on the two sides of the supporting frame respectively, and the crawler wheels are matched with the protrusions on the crawler blocks. The utility model further provides a cart which comprises two sets of crawler devices which are arranged in parallel in a spaced mode. The vehicle body is located above the two sets of crawler belt devices and supported by the two supporting frames. The technical problems that in the prior art, impurities in a crawler unit are not prone to being discharged, the weight of the crawler unit is increased, the crawler unit is abraded, and dead points are likely to be caused are solved.

Description

Technical Field

[0001] This utility model relates to the field of trolley technology, and in particular to a tracked device and a trolley. Background Technology

[0002] Tracked trolleys, with their unique tracked running mechanism, demonstrate excellent traction and stability in a variety of terrain conditions.

[0003] Application number JP2019011977 discloses a track unit consisting of multiple external attachments, internal attachments, and a belt. The external and internal attachments, combined inside and outside the belt, are continuous on their outer periphery. Considering that the external and internal attachments will come into contact with various ground surfaces, engineering plastics with low coefficient of friction, high hardness, scratch resistance, and excellent mechanical strength are selected. These are molded products of PA resin, glass-containing PA resin, PBT resin, glass-containing PBT resin, POM resin, or glass-containing POM resin. In this embodiment, internal attachments are provided, but an embodiment without internal attachments can also be used. Since the belt is always under tension, it is made of a material such as a woven flat belt that is not easily stretched, has excellent dimensional stability, and is easy to bend. Both ends are fixed to form an annular belt, allowing it to flexibly adapt to the required size of the track unit. In this embodiment, two parallel openings at predetermined intervals of 25 mm are provided, with multiple through holes.

[0004] The aforementioned track unit uses a belt to connect the inner and outer attachments into a single structure. This track unit can be used for movement, but when moving in harsh road conditions, due to the belt, debris entering the track unit will be blocked and difficult to expel, increasing the weight of the track unit, causing wear on the track unit, and even entering between adjacent inner attachments or adjacent outer attachments, making it unable to stably attach to the outer circumference of the pulley, causing dead point problems. Utility Model Content

[0005] In order to solve the technical problems in the prior art that impurities are not easily discharged from the track unit, which increases the weight of the track unit, causes wear and tear, and easily creates dead spots, this utility model provides a track device that solves the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, this utility model provides a tracked device, comprising:

[0007] The track unit includes multiple track blocks that are sequentially hinged to form an integral closed structure. Each track block has a protrusion extending along the walking direction, and a through channel is left between two adjacent track blocks.

[0008] Support frame;

[0009] The wheel set includes multiple track wheels disposed on both sides of the support frame, and the track wheels engage with protrusions on the track blocks.

[0010] According to one embodiment of the present invention, the track block is integrally cast with a first shaft hole and a second shaft hole. The first shaft hole of one track block and the second shaft hole of another adjacent track block are hinged by a shaft. The second shaft hole has a notch and extends toward the bottom of the track block to form the channel.

[0011] According to one embodiment of the present invention, the bottom surface of the track block is formed with concave texture, the concave texture is connected to the channel, and the concave texture extends laterally through the two sides of the track block.

[0012] According to one embodiment of the present invention, the shaft between two adjacent track blocks does not protrude beyond the edge of one of the track blocks.

[0013] According to one embodiment of the present invention, the holes of the first shaft hole body and the second shaft hole body are both segmented shaft holes, and the segmented shaft hole includes at least two semi-enclosed hole walls, with adjacent two semi-enclosed hole walls forming staggered vertical or opposite support surfaces.

[0014] According to one embodiment of the present invention, the first shaft hole body includes three semi-enclosed hole walls. The opening directions of the semi-enclosed hole walls on both sides are the same and perpendicular to the inner surface of the track block, and the opening direction of the middle semi-enclosed hole wall is parallel to the inner surface of the track block.

[0015] According to one embodiment of the present invention, the second shaft hole body includes two independent segmented shaft holes, each of the two independent segmented shaft holes including two semi-enclosed hole walls, the opening direction of the two semi-enclosed hole walls being perpendicular to the assembly surface, and the through channel being located between the two independent segmented shaft holes.

[0016] According to one embodiment of the present invention, the track wheel includes guide wheels disposed at both ends and support wheels supporting the support frame. The radius of the support wheel is twice the width of the track block, the radius of the guide wheel is four times the width of the track block, the center distance between the support wheel and the guide wheel is five times the width of the track block, and the angle between the tangent of the support wheel and the guide wheel and the horizontal plane is 15-30 degrees.

[0017] According to one embodiment of the present invention, an auxiliary steering module is installed on the support frame. The auxiliary steering module includes a steering rod and an elastic element. A slider is assembled in the middle of the steering rod. The slider is slidably assembled on the support frame. Elongated holes are formed on both sides of the support frame. The two ends of the steering rod extend out from the elongated holes and connect to guide wheels. The elastic element acts on the slider, causing the steering rod to abut against the end of the elongated hole.

[0018] This utility model also provides a trolley, including:

[0019] The track device consists of two sets of track devices arranged in parallel and spaced apart.

[0020] The vehicle body is located above the two sets of track devices and is supported by two support frames.

[0021] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0022] The track device of this invention facilitates the discharge of debris by providing through channels between adjacent track blocks. These channels, located between adjacent track blocks, allow for several advantages. Firstly, when a track block moves to the outer circumference of the wheel assembly and an angle is formed between two adjacent track blocks, the channel can widen to facilitate the discharge of larger debris. Secondly, the channel design does not reduce the strength of the track blocks, ensuring their service life.

[0023] The track device of this utility model has a hinged connection between the track blocks, which eliminates the need for a belt and prevents debris from being blocked. The first shaft hole of the track block has a notch that extends to form a channel, which facilitates the entry and discharge of debris from the hinged position. The bottom surface of the track block has a concave texture that communicates with the channel. The concave texture increases the friction between the track block and the contact surface to prevent slippage. On the other hand, debris discharged through the channel can also be discharged through the concave texture.

[0024] In this invention, the rotation axis of two adjacent track blocks does not protrude beyond the edge of the track block body of one of the track blocks, allowing the two track blocks to fit together. The first and second shaft holes forming the hinge structure are configured as segmented shaft holes, and the segmented shaft holes are configured as multi-segment semi-enclosed hole walls, so that adjacent semi-enclosed hole walls form staggered vertical or opposite support surfaces. This facilitates the integral molding of the hinge holes using a mold, effectively improving processing and assembly accuracy, thereby improving track stability and service life.

[0025] The track device of this utility model further sets the dimensional relationship between the support roller, the guide roller and the track block, so that the track block can be stably attached to the outer periphery of the support roller and the guide roller and is not easy to fall off; the angle between the tangent of the support roller and the guide roller and the horizontal plane is 15-30 degrees, which makes it easier for the track device to pass through uneven places.

[0026] The tracked device of this utility model has an auxiliary steering module set on the support frame. When the trolley needs to be turned, the user can apply a steering force to the vehicle body. The steering force can cause the support frame to deflect at an angle, and the steering rod and its guide wheel will deflect at an angle accordingly, pushing the trolley to move and thus changing the direction of the trolley. In the above process, due to the setting of elastic elements and elongated holes, the steering rod can deflect at an angle relative to the support frame, that is, the steering rod is not perpendicular to the support frame, so as to play a buffering role and facilitate the turning of the trolley.

[0027] The trolley of this invention can adapt to various road conditions, has good adaptability and strong practicality; debris on the track can be easily discharged without affecting the movement or causing dead spots. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the track device of this utility model;

[0029] Figure 2 A schematic diagram of a hinged connection between two track blocks;

[0030] Figure 3 A bottom view of two articulated track blocks connected by hinges;

[0031] Figure 4 This is a schematic diagram of the track block structure;

[0032] Figure 5 This is a bottom view of the track block;

[0033] Figure 6 A schematic diagram of the wheel assembly mounted on the support frame;

[0034] Figure 7 A 3D view of the wheelset assembled on the support frame;

[0035] Figure 8 Front view of the wheelset assembled on the support frame;

[0036] Figure 9 A schematic diagram of the structure of the auxiliary steering module mounted on the support frame;

[0037] Figure 10 A schematic diagram of the structure for the guide wheel and track block to mate;

[0038] Figure 11 A schematic diagram of the structure of the track roller and track block;

[0039] Figure 12 This is a schematic diagram of the cart's structure;

[0040] In the diagram: 10-track device; 1-track unit; 11-track block; 111-protrusion; 112-first shaft hole body; 113-second shaft hole body; 1131-notch; 114-concave texture; 115-protruding edge; 12-shaft; 13-channel; 2-support frame; 21-slide groove; 22-elongated hole; 3-wheel set; 31-guide wheel; 311-first groove; 32-support roller; 321-second groove; 4-auxiliary steering module; 41-steering rod; 42-elastic element; 43-slider; 44-stop;

[0041] Vehicle body; 201-Load-bearing plate; 202-Push rod;

[0042] 30 - Fixed bracket. Detailed Implementation

[0043] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0048] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0049] like Figure 1-12 As shown, this embodiment proposes a track device 10, including a track unit 1, a support frame 2 and a wheel set 3. The track unit 1 includes a plurality of track blocks 11, which are sequentially hinged to form an integral closed structure. The wheel set 3 includes track wheels disposed on both sides of the support frame 2, and the integral closed structure formed by the plurality of track blocks 11 is arranged around the outer periphery of the wheel set 3.

[0050] The track unit 1 includes multiple track blocks 11, which are sequentially hinged to form an integral closed structure. Each track block 11 has an inner surface and a bottom surface. The inner surface is positioned close to the wheel assembly 3, and the bottom surface is positioned opposite the inner surface. The inner surface of each track block 11 has protrusions 111 extending in the walking direction to facilitate engagement with the wheel assembly 3. Each track block 11 has an integrally cast first shaft hole 112 and second shaft hole 113. The first shaft hole 112 of one track block 11 and the second shaft hole 113 of an adjacent track block 11 are hinged together by a shaft 12. A through channel 13 is provided between adjacent track blocks 11.

[0051] As a preferred embodiment, there are two protrusions 111, which are located on both sides of the first shaft hole 112 and the second shaft hole 113, respectively. As a preferred embodiment, the protrusion 111 includes an arc-shaped outer surface, and the two ends of the arc-shaped outer surface extend through inclined surfaces to connect with the inner surface of the track block 11.

[0052] As a preferred embodiment, both the first shaft hole body 112 and the second shaft hole body 113 are segmented shaft holes. Each segmented shaft hole includes at least two semi-enclosed hole walls, with adjacent end semi-enclosed hole walls forming misaligned vertical or opposing support surfaces. Specifically, the first shaft hole body 112 includes three semi-enclosed hole walls. The opening directions of the two side semi-enclosed hole walls are the same and perpendicular to the inner surface of the track block 11. The opening direction of the middle semi-enclosed hole wall is parallel to the inner surface of the track block 11. That is, the two side semi-enclosed hole walls of the first shaft hole body 112 are vertically misaligned relative to the middle semi-enclosed hole wall. The second shaft hole body 113 includes two independent segmented shaft holes, each including two semi-enclosed hole walls. The opening directions of both semi-enclosed hole walls are perpendicular to the assembly surface. That is, the adjacent end semi-enclosed hole walls of the two independent segmented shaft holes of the second shaft hole body 113 are relatively misaligned. Preferably, both the first shaft hole body 112 and the second shaft hole body 113 are symmetrical structures.

[0053] As a preferred embodiment, the through channel 13 is located between two independent segmented shaft holes of the second shaft hole body 113. Specifically, a notch 1131 is formed between the two independent segmented shaft holes, and the notch 1131 penetrates the track block 11. The notch 1131 on one track block 11 and the adjacent track block 11 cooperate to form the channel 13. Preferably, the notch 1131 is a square notch.

[0054] As a preferred embodiment, the first shaft hole 112 and the second shaft hole 113 are formed on the inner surface of the track block 11. The bottom surface of the track block 11 has a concave texture 114, which communicates with the channel 13 and extends laterally through both sides of the track block 11. The concave texture 114 can be configured in various shapes, including but not limited to wavy or serrated shapes.

[0055] As a preferred technical solution in this embodiment, the shaft 12 does not protrude beyond the edge of one of the track blocks 11, so that the adjacent surfaces of the two track blocks 11 can fit together more closely, and does not interfere with the cooperation between the guide wheel 31 and the support wheel 32 and the protrusion 111 on the track block 11.

[0056] As a preferred technical solution of this embodiment, the inner surface of the track block 11 is further provided with raised edges 115 on both sides, and the raised edges 115 are located on the outer side of the protrusion 111.

[0057] Wheel set 3 is mounted on support frame 2. Wheel set 3 includes multiple track wheels. Specifically, the track wheels can be divided into guide wheels 31 and support wheels 32. There are two pairs of guide wheels 31, which are located at both ends of support frame 2. There are multiple pairs of support wheels 32, which are arranged at the lower end of support frame 2 to support support frame 2. The same pair of guide wheels 31 are located on both sides of support frame 2, and the same pair of support wheels 32 are located on both sides of support frame 2.

[0058] Specifically, there are multiple support rollers 32. In this embodiment, there are 9 pairs of support rollers 32, with three pairs of support rollers 32 forming a group, and the support rollers 32 are arranged in a straight line. The gap between support rollers 32 in the same group is small, while the gap between adjacent support roller groups is large.

[0059] As a preferred technical solution in this embodiment, the guide wheel 31 located at the front end of the support frame 2 is located above the front end of the foremost support wheel 32; the guide wheel 31 located at the rear end of the support frame 2 is located above the rear end of the last support wheel 32.

[0060] As a preferred embodiment, the radius of the support roller 32 is twice the width D of the track block 11, the radius of the guide roller 31 is four times the width D of the track block 11, the center distance between the support roller 32 and the guide roller 31 is five times the width D of the track block 11, and the angle α between the tangents of the support roller 32 and the guide roller 31 and the horizontal plane is 15-30 degrees. Through the above arrangement, a certain number of track blocks 11 are attached to the outer periphery of the guide roller 31 and the support roller 32, preventing the wheel assembly 3 from detaching from the track blocks 11.

[0061] As a preferred technical solution in this embodiment, the guide wheel 31 and the support wheel 32 are mounted on the support frame 2 through a shaft structure. Specifically, multiple shaft structures pass through and are assembled on the support frame 2, and the guide wheel 31 or the support wheel 32 are respectively assembled at both ends of the shaft structure.

[0062] As a preferred technical solution of this embodiment, a first groove 311 is formed on the circumferential surface of the guide wheel 31, and the two guide wheels 31 at both ends of the same shaft structure respectively cooperate with the protrusions 111 on both sides of the track block 11; a second groove 321 is formed on the circumferential surface of the support wheel 32, and the two support wheels 32 at both ends of the same shaft structure respectively cooperate with the protrusions 111 on both sides of the track block 11.

[0063] The guide wheel 31 is mounted on the support frame 2 via the auxiliary steering assembly 4. Specifically, the auxiliary steering assembly 4 includes a steering rod 41 and an elastic element 42. The steering rod 41 serves as the shaft structure for mounting the guide wheel 31 on the support frame 2. A slider 43 is mounted in the middle of the steering rod 41, and the steering rod 41 is slidably mounted on the support frame 2 via the slider 43. Both ends of the steering rod 41 extend out of the support frame 2, connecting the two guide wheels 31. Correspondingly, a groove 21 extending in the direction of travel is formed on the support frame 2. The slider 43 slides along the groove 21. Elongated holes 22 are formed on both sides of the groove 21, and both ends of the steering rod 41 extend out of the elongated holes 22. The elastic element 42 acts on the steering rod 41. In the initial state, under the action of the elastic element 42, the steering rod 41 abuts against the same end of the elongated hole 22, and the steering rod 41 is perpendicular to the support frame 2. When turning, the steering rod 41 can deflect relative to the support frame 2.

[0064] As a preferred technical solution in this embodiment, the upper opening of the slide groove 21 is narrowed to prevent the slider 43 from coming out of the upper opening of the slide groove 21.

[0065] As a preferred embodiment, a stop 44 is further provided in the slide groove 21, and an elastic member 42 is located between the stop 44 and the slider 43. The two ends of the elastic member 42 act on the stop 44 and the slider 43 respectively. Preferably, the two ends of the elastic member 42 can be fixed to the stop 44 and the slider 43 respectively; preferably, the elastic member 42 can be selected as, but is not limited to, a spring. In the initial state, the elastic member 42 is in a compressed state.

[0066] like Figure 12 As shown, this embodiment also provides a trolley, including the aforementioned track device 10 and vehicle body 20. The track device 10 consists of two sets, which are parallel and spaced apart. The vehicle body 20 is located above the two sets of track devices 10 and is supported by the two sets of track devices 10.

[0067] The vehicle body 20 includes a load-bearing plate 201 and a push rod 202. The load-bearing plate 201 is horizontally placed above the track device 10. The bottom of the load-bearing plate 201 is fixed to the support frame 2 of the two track devices 10 by a fixing bracket 30. The push rod 202 is fixed to the upper surface of the load-bearing plate 201, making it easy for the user to grip and push.

[0068] As a preferred technical solution in this embodiment, the fixing frame 30 is an inverted U-shaped frame. The upper end of the fixing frame 30 is connected to the bottom surface of the load-bearing plate 201, and the lower end of the fixing frame 30 extends to both ends of the support frame 2 and is connected to the support frame 2.

[0069] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A tracked device, characterized in that, include: Track unit (1), the track unit (1) includes multiple track blocks (11), the multiple track blocks (11) are hinged in sequence to form an integral closed structure, the track blocks (11) are provided with protrusions (111) extending along the walking direction, and a through channel (13) is left between two adjacent track blocks (11). Support frame (2); The wheel set (3) includes multiple track wheels disposed on both sides of the support frame (2), and the track wheels cooperate with the protrusions (111) on the track block (11).

2. The tracked device according to claim 1, characterized in that, The track block (11) is integrally cast with a first shaft hole body (112) and a second shaft hole body (113). The first shaft hole body (112) of one track block (11) and the second shaft hole body (113) of the adjacent track block (11) are hinged by a shaft (12). The second shaft hole body (113) has a notch (1131) and extends toward the bottom of the track block (11) to form the channel (13).

3. A tracked device according to any one of claims 1-2, characterized in that, The bottom surface of the track block (11) forms a concave texture (114), which is connected to the channel (13) and extends laterally through the two sides of the track block (11).

4. A tracked device according to any one of claims 1-2, characterized in that, The shaft (12) between two adjacent track blocks (11) does not protrude beyond the edge of one of the track blocks (11).

5. A tracked device according to claim 2, characterized in that, The holes in the first shaft hole body (112) and the second shaft hole body (113) are both segmented shaft holes. The segmented shaft hole includes at least two semi-enclosed hole walls, and adjacent two semi-enclosed hole walls form staggered vertical or opposite support surfaces.

6. A tracked device according to claim 5, characterized in that, The first shaft hole body (112) includes three semi-enclosed hole walls. The opening directions of the semi-enclosed hole walls on both sides are the same and perpendicular to the inner surface of the track block (11). The opening direction of the semi-enclosed hole wall in the middle is parallel to the inner surface of the track block (11).

7. A tracked device according to claim 5, characterized in that, The second shaft hole body (113) includes two independent segmented shaft holes. Each of the two independent segmented shaft holes includes two semi-enclosed hole walls. The opening direction of the two semi-enclosed hole walls is perpendicular to the assembly surface. The through channel (13) is located between the two independent segmented shaft holes.

8. A tracked device according to claim 1, characterized in that, The track rollers include guide rollers (31) located at both ends and support rollers (32) supporting the support frame (2). The radius of the support roller (32) is twice the width D of the track block (11), the radius of the guide roller (31) is four times the width D of the track block (11), the center distance between the support roller (32) and the guide roller (31) is five times the width D of the track block (11), and the angle α between the tangent of the support roller (32) and the guide roller (31) and the horizontal plane is 15-30 degrees.

9. A tracked device according to claim 8, characterized in that, An auxiliary steering module (4) is installed on the support frame (2). The auxiliary steering module (4) includes a steering rod (41) and an elastic element (42). A slider (43) is mounted in the middle of the steering rod (41). The slider (43) is slidably mounted on the support frame (2). Elongated holes (22) are formed on both sides of the support frame (2). The two ends of the steering rod (41) extend from the elongated holes (22) and connect to guide wheels (31). The elastic element (42) acts on the slider (43) so that the steering rod (41) abuts against the end of the elongated hole (22).

10. A trolley, characterized in that, include: The track device (10) according to any one of claims 1-9, wherein the track device (10) is in two sets, and the two sets of track devices (10) are arranged in parallel and spaced apart; The vehicle body (20) is located above the two sets of track devices (10) and is supported by two support frames (2).

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