Crawler chassis and crawler vehicle

Abstract

The present disclosure provides a tracked chassis and a tracked vehicle. The tracked chassis comprises a vehicle frame, a traveling part mounted on the vehicle frame to drive the vehicle frame to travel, the traveling part comprising a road wheel and a track, the road wheel, the vehicle frame and the track having an insertion space for a fork tooth of a forklift to be inserted, and a track anti-derailing device comprising at least one track limiting part movably connected to the vehicle frame, the track limiting part having a first working position and a second working position, in the first working position, the track limiting part limits the track from moving in the left-right direction of the tracked chassis, and in the second working position, the track limiting part avoids the insertion space. The tracked vehicle comprises the aforementioned tracked chassis. The tracked chassis and the tracked vehicle provided by the present disclosure can improve the problem that the track limiting part interferes with the fork loading hole when the tracked vehicle is fork loaded and transported.

Description

Technical Field

[0001] The present disclosure relates to the field of engineering machinery, and in particular to a crawler chassis and a crawler vehicle. Background Art

[0002] The scissor lift mobile lifting work platform, commonly known as a scissor lift truck, is a special equipment for high-altitude operations with vertical lifting and a wide range of indoor and outdoor uses. It can be widely used in indoor and outdoor machinery installation, equipment maintenance and building maintenance in stations, docks, bridges, halls, and factories.

[0003] Crawler scissor lifts are a subcategory of scissor lifts. Equipped with rubber tracks, they offer excellent road passability and off-road capabilities, allowing them to easily cross small trenches, steps, and obstacles on construction sites. Their large contact patch and low ground contact pressure prevent them from sinking into soft ground and damaging the surface. They can rotate on the spot and offer flexible steering, making them suitable for maneuvering in confined terrain. Therefore, crawler scissor lifts are commonly used in the construction and maintenance of non-hardened sites such as airports, railway stations, subways, factories, and exhibition halls; in agricultural and gardening settings such as vegetable greenhouse construction and agricultural harvesting; and in the installation and construction of power grid and communication lines on muddy outdoor surfaces such as power substations.

[0004] Derailment is a common fault of crawler chassis, so an anti-derailment device needs to be arranged. Conventional anti-derailment devices are mostly fixed and installed on the crawler beam to limit the crawler. However, scissor lifts are usually used for forklifts for transportation, and the crawler limiter will interfere with the fork mounting hole. Summary of the Invention

[0005] The present disclosure aims to provide a crawler chassis and a crawler vehicle, so as to improve the problem of interference between the crawler limiter and the fork mounting hole during fork loading and transportation of the crawler vehicle.

[0006] A first aspect of the present disclosure provides a tracked chassis, comprising:

[0007] Frame;

[0008] A walking part, mounted on the frame to drive the frame to move, the walking part including supporting wheels and crawler tracks, with insertion spaces for inserting fork tines of a forklift between the supporting wheels, the frame and the crawler tracks; and

[0009] The crawler anti-derailment device includes at least one crawler limiting portion, which is movably connected to the frame. The crawler limiting portion has a first working position and a second working position. In the first working position, the crawler limiting portion limits the crawler from moving in the left and right directions along the crawler chassis. In the second working position, the crawler limiting portion avoids the insertion space.

[0010] According to some embodiments of the present disclosure, at least one of the track limiting portions is rotatably connected to the vehicle frame along an axis in the left-right direction of the tracked chassis.

[0011] According to some embodiments of the present disclosure, the crawler anti-derail device includes a driving component, which is drivingly connected to the crawler limiter and is configured to: drive the crawler limiter to switch from the first working position to the second working position, and / or drive the crawler limiter to switch from the second working position to the first working position.

[0012] According to some embodiments of the present disclosure, the driving component includes:

[0013] A telescopic member, one end of which is hinged to the vehicle frame in the telescopic direction and the other end of which is hinged to the track limiter, wherein the telescopic member is configured to switch the working position of the track limiter by changing its own length; and / or

[0014] The first handle is provided on the track limiting portion and is configured to drive the track limiting portion to switch the working position of the track limiting portion.

[0015] According to some embodiments of the present disclosure, the track anti-derailment device includes a locking component, which is configured to fix the track limiting portion to the frame so that the track limiting portion remains in the first working position and / or the second working position.

[0016] According to some embodiments of the present disclosure,

[0017] The crawler limiting portion is provided with a first through hole and / or a second through hole, and the frame is provided with a first pin hole and a second pin hole, wherein the first pin hole and the second pin hole are distributed along the up-down direction of the crawler chassis;

[0018] The locking component includes a latch pin, which passes through the first through hole and is connected to the first pin hole to keep the track limiter in the first working position, and / or the latch pin passes through the second through hole and is connected to the second pin hole to keep the track limiter in the second working position.

[0019] According to some embodiments of the present disclosure,

[0020] The latch includes a latch body and a second handle provided at a first end of the latch body, wherein at least a portion of the second handle is located radially outward of the latch body;

[0021] The crawler anti-derailment device further includes a blocking member that is detachably mounted on the second end of the latch body. When the blocking member is mounted on the second end of the latch body, at least a portion of the blocking member is located radially outside the latch body.

[0022] According to some embodiments of the present disclosure, the track limiting portion has an insertion end, and the track is provided with a limiting groove whose extension direction is perpendicular to the left and right directions of the crawler chassis. In the first working position, the insertion end is inserted into the limiting groove, and in the second working position, the insertion end is disengaged from the limiting groove.

[0023] According to some embodiments of the present disclosure, a rounded corner is provided at the junction of the bottom surface and the side surface of the insertion end.

[0024] According to some embodiments of the present disclosure, the at least one track limiting portion includes a first track limiting portion and a second track limiting portion, and the first track limiting portion and the second track limiting portion are arranged along the front-rear direction of the crawler chassis.

[0025] A second aspect of the present disclosure provides a tracked vehicle comprising the tracked chassis described in the first aspect of the present disclosure.

[0026] Based on the crawler chassis provided by the present disclosure, the crawler limiter can be switched between a first working position and a second working position to realize displacement. In the first working position of the crawler limiter, the crawler anti-derail device is in a posture that limits the left and right displacement of the crawler, and the crawler can reliably walk without derailing under the limiting action of the crawler limiter; in the second working position of the crawler limiter, the crawler anti-derail device is in a posture that avoids the insertion space, and by inserting the fork tines of a forklift into the insertion space, the crawler chassis can be transported. The crawler vehicle provided by the present disclosure has the advantages that the aforementioned crawler chassis has.

[0027] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0029] Figure 1 It is a schematic structural diagram of a crawler chassis of some embodiments of the present disclosure, wherein the crawler limit portion is in a first working position.

[0030] Figure 2 Schematic diagram of the cross-sectional structure of the crawler chassis at position AA of some embodiments of the present disclosure.

[0031] Figure 3 Structure diagram of a track chassis for some embodiments of the present disclosure, in which the track limiting portion is in the second working position.

[0032] Figure 4 Structure diagram of a track derailment prevention device of a track chassis for some embodiments of the present disclosure.

[0033] Figure 5 Structure diagram of a base of the track derailment prevention device shown in Figure 1

[0034] Figure 6 Structure diagram of a first track limiting portion of the track derailment prevention device shown in Figure 1

[0035] Figure 7 Structure diagram of a second track limiting portion of the track derailment prevention device shown in Figure 1

[0036] Structure diagram of a vehicle frame of a track chassis for some embodiments of the present disclosure. Figure 8

[0037] Structure diagram of a guide wheel of a track chassis for some embodiments of the present disclosure. Figure 9

[0038] Structure diagram of a road wheel of a track chassis for some embodiments of the present disclosure. Figure 10

[0039] In the drawings, each of the reference numerals represents the following: Figures 1 to 10

[0040] ​​​1, track anti-derailing device; 11, base; 111, bottom plate; 112, round tube; 113, first rib plate; 114, telescopic component mounting seat; 115, hinged pin shaft; 1151, first threaded hole; 116, second rib plate; 12, telescopic component; 13A, first track limiting part; 131A, first hinged seat of first track limiting part; 132A, top plate of first track limiting part; 133A, second hinged seat of first track limiting part; 134A, third rib plate of first track limiting part; 135A, vertical plate of first track limiting part; 1351A, first through hole of first track limiting part; 1352A, second through hole of first track limiting part; 136A, shaft sleeve of first track limiting part; 137A, sticking plate of first track limiting part; 1371A, round corner of first track limiting part; 138A, first handle of first track limiting part; 13B, second track limiting part; 131B, first hinged seat of second track limiting part; 132B, top plate of second track limiting part; 133B, second hinged seat of second track limiting part; 134B, third rib plate of second track limiting part; 135B, vertical plate of second track limiting part; 1351B, first through hole of second track limiting part; 1352B, second through hole of second track limiting part; 136B, shaft sleeve of second track limiting part; 137B, sticking plate of second track limiting part; 1371B, round corner of second track limiting part; 138B, first handle of second track limiting part; 14, blocking piece; 15, bolt; 151, second handle; 16, check ring;

[0041] 2, frame; 21, tensioning device mounting seat; 22, supporting wheel mounting seat; 221, first plane; 23A, first pin hole plate; 231A, first pin hole of first pin hole plate; 232A, second pin hole of first pin hole plate; 23B, second pin hole plate; 231B, first pin hole of second pin hole plate; 232B, second pin hole of second pin hole plate; 24, base mounting seat; 241, second threaded hole; 25, sliding groove; 26, frame body; 27, walking motor mounting hole;

[0042] 3, guide wheel; 31, guide wheel body; 32, guide wheel shaft; 321, second plane; 322, sliding plate;

[0043] 4, tensioning device; 41, tensioning bolt; 42, tensioning nut;

[0044] 5, supporting wheel; 51, supporting wheel body; 52, supporting wheel shaft; 521, third plane; 522, step; 523, external thread; 524, fixing pin hole;

[0045] 6, track; 61, limiting groove; 611, limiting groove bottom surface; 612, limiting groove side surface;

[0046] 7, drive wheel;

[0047] 8. A walking motor;

[0048] 9. A fixing nut;

[0049] 10. A cotter pin. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present disclosure will be described clearly and completely in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.

[0051] Unless otherwise specifically stated, the relative arrangements of parts and steps, numerical expressions, and numerical values set forth in the various examples herein are not meant to limit the scope of the present disclosure. Also, it is to be understood that the drawings are not necessarily drawn to scale and that, unless otherwise specifically indicated, the various dimensions are intended to be approximate. Techniques, methods, and devices known to those of ordinary skill in the art can not be discussed in detail, but rather can be assumed to be known by those of ordinary skill in the art. In the examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the various figures and the description, so that further discussion of the like parts is not necessary.

[0052] In the description of the present disclosure, it should be understood that the use of the words "first", "second", and the like do not limit the corresponding parts in a particular order, and the above words are used only to distinguish the corresponding parts, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0053] In the description of the present disclosure, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present disclosure and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each part itself.

[0054] refer to Figures 1 to 10 Some embodiments of the present disclosure provide a crawler chassis, including a frame 2, a walking part and a crawler anti-derailment device 1.

[0055] The traveling part is mounted on the vehicle frame 2 to drive the vehicle frame 2 to travel. The traveling part includes supporting wheels 5 and crawler tracks 6. There is an insertion space H between the supporting wheels 5, the vehicle frame 2 and the crawler tracks 6 for inserting the fork tines of the forklift.

[0056] The crawler anti-derailment device 1 includes at least one crawler limiter, which is movably connected to the frame 2. The crawler limiter has a first working position and a second working position. In the first working position, the crawler limiter limits the crawler 6 from moving in the left and right directions of the crawler chassis. In the second working position, the crawler limiter avoids the insertion space H.

[0057] Figures 1 to 10 , the x direction represents the left and right direction of the crawler chassis, the y direction represents the front and rear direction of the crawler chassis, and the z direction represents the up and down direction of the crawler chassis.

[0058] Based on the crawler chassis provided by the embodiment of the present disclosure, the crawler limiter can be switched between a first working position and a second working position to achieve displacement. In the first working position of the crawler limiter, the crawler anti-derail device is in a posture that limits the left and right displacement of the crawler track, and the crawler track can reliably walk without derailing under the limiting action of the crawler limiter; in the second working position of the crawler limiter, the crawler anti-derail device is in a posture that avoids the insertion space, and the crawler chassis can be transported by inserting the fork tines of a forklift into the insertion space.

[0059] In some embodiments, the at least one track limiting portion includes a first track limiting portion 13A and a second track limiting portion 13B, and the first track limiting portion 13A and the second track limiting portion 13B are arranged along the front-rear direction of the crawler chassis.

[0060] In order to achieve a better limiting effect, the crawler chassis may include more or fewer crawler anti-derailment devices 1 according to the structure, size and rigidity of the crawler track, and the crawler anti-derailment device 1 may include more or fewer crawler limiting parts.

[0061] In some embodiments, at least one track limiting portion is rotatably connected to the frame 2 along the left-right axis of the crawler chassis.

[0062] refer to Figures 1 to 7In the embodiment, the crawler anti-derail device 1 includes a base 11 detachably mounted on the vehicle frame 2, and the first crawler position limiting portion 13A and the second crawler position limiting portion 13B can be coaxially hinged on the base 11. In some unillustrated embodiments, the first crawler position limiting portion 13A and the second crawler position limiting portion 13B can also be directly hinged on the vehicle frame 2 or hinged on the base 11 respectively through different hinge shafts.

[0063] Of course, at least one track limiter can also be movably arranged relative to the frame 2, for example, movably arranged along the up and down directions of the tracked chassis, or movably and rotatably arranged relative to the frame 2, as long as it can play the role of changing the working position of the track limiter.

[0064] In some embodiments, the crawler anti-derail device 1 includes a driving component, which is drive-connected to the track limiting portion and is configured to: drive the track limiting portion to switch from the first working position to the second working position, and / or drive the track limiting portion to switch from the second working position to the first working position.

[0065] In some embodiments, the driving component includes a telescopic member 12 and / or a first handle. The telescopic member 12 is hinged to the vehicle frame 2 at one end in its telescopic direction and hinged to the track stopper at the other end. The telescopic member 12 is configured to change the operating position of the track stopper by changing its length. The first handle is provided on the track stopper and is configured to drive the track stopper to change its operating position.

[0066] refer to Figures 1 to 7 The telescopic component 12 can be directly hinged to the vehicle frame 2 or hinged to the base 11. The telescopic component 12 can be a tension gas spring, which is in an extended state in the first working position and in a retracted state in the second working position. The tension gas spring can drive the track limiter to automatically switch from the second working position to the first working position, and the process of switching the track limiter from the first working position to the second working position can be completed manually with the help of the first handle, without the need for special tools, and is easy to operate. In some embodiments not shown in the figure, the telescopic component 12 can also be other forms of gas springs such as electric gas springs, free-type gas springs, or hydraulic cylinders.

[0067] In order to prevent the track limiter from moving up and down and deviating from the corresponding working position during the operation of the tracked vehicle or the transportation of the tracked chassis, in some embodiments, the track anti-derailment device 1 includes a locking component, which is configured to fix the track limiter on the frame 2 so that the track limiter remains in the first working position and / or the second working position.

[0068] In some embodiments, the track stopper is provided with a first through-hole and / or a second through-hole, and the frame 2 is provided with a first pin hole and a second pin hole, the first pin hole and the second pin hole being distributed along the vertical direction of the tracked chassis. The locking component includes a latch 15, which passes through the first through-hole and engages with the first pin hole to maintain the track stopper in the first working position, and / or the latch 15 passes through the second through-hole and engages with the second pin hole to maintain the track stopper in the second working position.

[0069] In some embodiments, the latch 15 includes a latch body and a second handle 151 disposed at a first end of the latch body, with at least a portion of the second handle 151 located radially outward from the latch body. The track anti-derailment device further includes a blocking member 14 detachably mounted to the second end of the latch body. When the blocking member 14 is mounted to the second end of the latch body, at least a portion of the blocking member 14 is located radially outward from the latch body.

[0070] When the tracked vehicle is working, the latch 15 needs to bear loads in multiple directions. In the above embodiment, by providing a second handle 151 at the first end of the latch body, the installation or removal of the latch 15 can be facilitated. By installing the latch 15 on the vehicle frame 2 and then installing the blocking member 14 at the second end of the latch body, the latch 15 can be prevented from moving along its own axis. Figure 1 The blocking member 14 may be an O-shaped pin, the pin body of which is inserted into the second end of the latch body along the radial direction of the latch body.

[0071] In some embodiments, the track limiting portion has an insertion end, and a limiting groove 61 is provided on the track 6, the extension direction of which is perpendicular to the left and right direction of the crawler chassis. In the first working position, the insertion end is inserted into the limiting groove 61, and in the second working position, the insertion end is separated from the limiting groove 61.

[0072] refer to Figures 1 to 7 The track limiting part may include a plate located at the insertion end, such as the plate 137A of the first track limiting part 13A and the plate 137B of the second track limiting part 13B, which can not only improve the strength of the track limiting part, but also moderately reduce the gap between the track limiting part and the track, thereby making the limitation more reliable and improving the anti-derailment effect of the track 6.

[0073] In some embodiments, a rounded corner is provided at the junction of the bottom surface and the side surface of the insertion end.

[0074] For the crawler 6 made of rubber material, if the crawler moves in the left and right direction, the above arrangement can prevent the crawler 6 from being cut by the insertion end, thereby extending the service life of the crawler. Figure 6 and Figure 7 , the above-mentioned rounded corners can be set on the edge of the board.

[0075] The crawler chassis and the working principles of some embodiments of the present disclosure are further described below with reference to the accompanying drawings.

[0076] The crawler chassis includes a crawler anti-derailment device 1, a frame 2, a guide wheel 3, a tensioning device 4, a supporting wheel 5, a crawler track 6, a driving wheel 7, a travel motor 8, a fixing nut 9, and a cotter pin 10.

[0077] The crawler anti-derail device 1 is assembled from a base 11, a telescopic component 12, a first crawler limiter 13A, a second crawler limiter 13B, a blocking member 14, a latch 15, and a retaining ring 16. The base 11 is composed of a bottom plate 111, a circular tube 112, a first rib 113, a telescopic component mounting seat 114, a hinge pin 115, and a second rib 116. The hinge pin 115 is a stepped shaft with a first threaded hole 1151 at one end. The telescopic component 12 is a tension gas spring with an initial posture of a fully retracted cylinder rod, which can automatically retract and reset after being stretched. The first track limiting portion 13A is composed of a first articulated seat 131A, a top plate 132A, a second articulated seat 133A, a third rib 134A, a vertical plate 135A, a sleeve 136A, a patch 137A and a first handle 138A. The vertical plate 135A is provided with a first through hole 1351A and a second through hole 1352A. The first through hole 1351A and the sleeve 136A are coaxially arranged, and the edge of the patch 137A is provided with a rounded corner 1371A. Second track stopper 13B comprises a first hinged base 131B, a top plate 132B, a second hinged base 133B, a third rib 134B, a vertical plate 135B, a shaft sleeve 136B, a contact plate 137B, and a first handle 138B. Vertical plate 135B is provided with a first through-hole 1351B and a second through-hole 1352B. First through-hole 1351B and shaft sleeve 136B are coaxially arranged. Contact plate 137B has a rounded edge 1371B. Latch 15 comprises a latch body and a second handle 151.

[0078] The frame 2 includes a tensioning device mounting base 21, a roller mounting base 22, a first pinhole plate 23A, a second pinhole plate 23B, a base mounting base 24, a slide 25, a frame body 26, and a travel motor mounting hole 27. The roller mounting base 22 is provided with a mounting hole, the inner wall of which has a first flat surface 221. The first pinhole plate 23A is provided with a first pinhole 231A and a second pinhole 232A, the second pinhole plate 23B is provided with a first pinhole 231B and a second pinhole 232B, and the base mounting base 24 is provided with a second threaded hole 241.

[0079] The guide wheel 3 includes a guide wheel body 31 and a guide wheel shaft 32 . The guide wheel shaft 32 is provided with a second plane 321 and a sliding plate 322 .

[0080] The track roller 5 includes a track roller body 51 and a track roller shaft 52 . The track roller shaft 52 is a stepped shaft provided with a third plane 521 , a step 522 , an external thread 523 and a fixing pin hole 524 .

[0081] like Figure 4 As shown, the first and second track stoppers 13A and 13B are mounted on the base 11 and can rotate about the hinge pin 115. A retaining ring 16 is bolted to the hinge pin 115 to prevent axial movement of the first and second track stoppers 13A and 13B. The telescopic member 12 is connected to the telescopic member mounting seat 114, the second hinge seat 133A of the first track stopper, and the second hinge seat 133B of the second track stopper, respectively, so that the first and second track stoppers 13A and 13B automatically reset after displacement.

[0082] like Figure 5 As shown, the circular tube 112 and the hinge pin 115 are fixed to the bottom plate 111 by welding, and the first rib 113 and the second rib 116 are arranged around the circumference. The telescopic component mounting seat 114 is welded to the end of the circular tube 112, making the overall structure of the base 11 compact and high in strength. Figure 6 、 Figure 7 As shown, the first crawler track limiting portion 13A and the second crawler track limiting portion 13B have similar structures. In the first crawler track limiting portion 13A, the first articulated seat 131A, the second articulated seat 133A, and the vertical plate 135A are respectively welded to the corresponding positions of the top plate 132A, and the first articulated seat 131 is symmetrically arranged relative to the vertical plate 135A; a third rib 134A is provided between the top plate 132A and the vertical plate 135A, and the third rib 134A is symmetrically arranged relative to the two sides of the vertical plate 135A; the shaft sleeve 136A is coaxially arranged with the first through hole 1351A and is fixed to the vertical plate 135A by welding; a plate 137A is welded on both sides of the vertical plate 135A, which can not only improve the strength of the vertical plate, but also reduce the gap between the vertical plate and the crawler track, thereby improving the anti-derailment effect. The second crawler track limiting portion 13B has a similar structure to the first crawler track limiting portion 13A and will not be described in detail here.

[0083] like Figures 1 to 3 、 Figure 8As shown, the tensioning device mounting seat 21, the supporting roller mounting seat 22, the first pinhole plate 23A, the base mounting seat 24, and the second pinhole plate 23B are welded to the frame body 26 and arranged symmetrically on the left and right sides. A slide groove 25 is provided at the front end of the frame 2, and the sliding plate 322 of the guide wheel 3 can slide within the slide groove 25. The rear end of the frame 2 is provided with a travel motor mounting hole 27, and the travel motor 8 is mounted on the travel motor mounting hole 27. The supporting roller 5 is mounted on the supporting roller mounting seat 22 and fixed to the frame 2 via a fixing nut 9 and a cotter pin 10. The supporting roller mounting seat 22 is provided with a first flat surface 221, and the supporting roller 5 is provided with a third flat surface 521. These two flat surfaces cooperate to prevent the supporting roller shaft 52 from rotating. The base mounting seat 24 is provided with a second threaded hole 241, and the track anti-derailment device 1 is fixed to the base mounting seat 24 via bolts. The first pin hole plate 23A is provided with a first pin hole 231A and a second pin hole 232A, and the second pin hole plate 23B is provided with a second pin hole 231B and a second pin hole 232B. There may be multiple latches 15, one of which passes through the vertical plate 135A of the first track stopper 13A and the pin hole of the first pin hole plate 23A to secure the first track stopper 13A to the vehicle frame 2, and the other passes through the vertical plate 135A of the second track stopper 13A and the pin hole of the first pin hole plate 23A to secure the first track stopper 13A to the vehicle frame 2. When the tracked chassis is in the working state, the track stopper is in the first working position, the latch 15 bears the load transmitted in all directions, and the second handle 151 and the blocking member 14 prevent the latch 15 from axial movement.

[0084] like Figures 1 to 3 、 Figure 9 、 Figure 10 As shown, the guide wheel 3 is located at the front end of the frame 2, the travel motor 8 is connected to the drive wheel 7 and is located at the rear end of the frame 2. The track anti-derailment device 1 is bolted to the middle of the frame 2, and multiple supporting rollers 5 are evenly arranged at the bottom of the frame 2. The track 6 is a closed ring and wrapped around the outside of each wheel. The tensioning device 4 is assembled on the tensioning device mounting base 21 and consists of a tensioning bolt 41 and a tensioning nut 42 that cooperate with each other. The tensioning nut 42 forces the tensioning bolt 41 to press against the second flat surface 321 of the guide wheel shaft 32. The guide wheel 3 moves forward under the action of the tensioning bolt 41, thereby tensioning the track 6.

[0085] An insertion space H for inserting the fork tines of a forklift is formed between the supporting wheels 5, the vehicle frame 2 and the crawler track 6.

[0086] When the track limiter is in the first working position, Figure 1As shown, at this time, one latch 15 is simultaneously inserted into the first through hole 1351A of the first crawler track limiting portion 13A located on the front side of the vehicle frame 2 and the first pin hole 231A of the first pin hole plate 23A, and the other latch 15 is simultaneously inserted into the first through hole 1351B of the second crawler track limiting portion 13B located on the rear side of the vehicle frame 2 and the first pin hole 231B of the second pin hole plate 23B, thereby fixing the crawler track anti-derailment device 1 to the vehicle frame 2. Figure 2 As shown, there is a gap between the plate 137A and the bottom surface 611 and the side surface 612 of the limiting groove of the track 6. The plate 137A is provided with rounded corners to prevent the rubber track from being cut when the track 6 moves sideways.

[0087] When the track limiter is in the second working position, Figure 3 As shown, the blocking members 14 and corresponding latches 15 on the front and rear sides of the vehicle frame 2 are manually removed, and the first and second track stoppers 13A, 13B rotate about the hinge pins 115 driven by the telescopic member 12. The insertion space H is then automatically exposed, allowing for forklift transportation. To prevent the first and second track stoppers 13A, 13B from moving up and down during transportation, the front latch 15 can be simultaneously inserted into the second through-hole 1352A of the first track stopper 13A and the second pin hole 232A of the first pin hole plate 23A, while the rear latch 15 can be simultaneously inserted into the second through-hole 1352B of the second track stopper 13B and the second pin hole 232B of the second pin hole plate 23B. This operation not only ensures transportation safety but also prevents the latch 15 from being lost during transportation. When the crawler chassis is transported to the work site, the front and rear latches 15 are removed, and the first handle 138A of the first crawler limiter 13A and the handle 138B of the second crawler limiter 13B are grasped respectively to pull the first crawler limiter 13A and the second crawler limiter 13B downward until the corresponding through holes and pin holes are aligned, and then the latch 15 is inserted to complete the posture switching of the crawler anti-derailment device.

[0088] The crawler chassis has a reliable structure and is easy to operate. The posture switching of the crawler anti-derailment device can be completed manually without using tools, which not only improves the operational reliability of the crawler vehicle but also reduces the complexity of the shifting operation.

[0089] Some embodiments of the present disclosure further provide a tracked vehicle comprising the aforementioned tracked chassis. This tracked vehicle possesses the advantages of the aforementioned tracked chassis. The tracked vehicle may be a tracked lifting work platform, such as a scissor lift, or a tracked firefighting vehicle, such as a tracked smoke exhaust robot or a tracked firefighting robot.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not intended to limit them. Although the present disclosure has been described in detail with reference to preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solutions claimed for protection in the present disclosure.

Claims

1. A crawler chassis, characterized in that: include: Frame (2); A walking portion is mounted on the vehicle frame (2) to drive the vehicle frame (2) to move, the walking portion comprising a supporting wheel (5) and a crawler track (6), and an insertion space (H) for inserting a fork tine of a forklift is provided between the supporting wheel (5), the vehicle frame (2) and the crawler track (6); and A crawler anti-derailment device (1) comprises at least one crawler limiting portion, the crawler limiting portion being movably connected to the vehicle frame (2), the crawler limiting portion having a first working position and a second working position, wherein in the first working position, the crawler limiting portion limits the crawler (6) from moving in the left-right direction of the crawler chassis, and in the second working position, the crawler limiting portion avoids the insertion space (H), the crawler limiting portion having an insertion end, and a limiting groove (61) extending in a direction perpendicular to the left-right direction of the crawler chassis being provided on the crawler (6), wherein in the first working position, the insertion end is inserted into the limiting groove (61), and in the second working position, the insertion end is separated from the limiting groove (61); The crawler anti-derailment device (1) comprises a locking component, wherein the locking component is configured to fix the crawler limiting portion to the vehicle frame (2) so as to keep the crawler limiting portion at the first working position and the second working position; The crawler limiting portion is provided with a first through hole and a second through hole, the vehicle frame (2) is provided with a first pin hole and a second pin hole, the first pin hole and the second pin hole are distributed along the up-down direction of the crawler chassis, the locking component includes a latch (15), the latch (15) passes through the first through hole and is connected to the first pin hole so that the crawler limiting portion is maintained in the first working position, and the latch (15) passes through the second through hole and is connected to the second pin hole so that the crawler limiting portion is maintained in the second working position; The latch (15) comprises a latch body and a second handle (151) provided at a first end of the latch body, at least a portion of the second handle (151) being located radially outside the latch body. The crawler track anti-derailment device further comprises a blocking member (14) which is detachably mounted on the second end of the latch body. When the blocking member (14) is mounted on the second end of the latch body, at least a portion of the blocking member (14) is located radially outside the latch body.

2. The crawler chassis according to claim 1, characterized in that: At least one of the crawler track limiting parts is rotatably connected to the vehicle frame (2) along an axis in the left-right direction of the crawler chassis.

3. The crawler chassis according to claim 1, characterized in that: The crawler anti-derailment device (1) comprises a driving component, which is drivingly connected to the crawler limiting portion and is configured to: drive the crawler limiting portion to switch from the first working position to the second working position, and / or drive the crawler limiting portion to switch from the second working position to the first working position.

4. The crawler chassis according to claim 3, characterized in that: The driving component includes: a telescopic component (12), one end of which in the telescopic direction is hinged to the vehicle frame (2), and the other end of which is hinged to the crawler track limiting portion, the telescopic component (12) being configured to switch the working position of the crawler track limiting portion by changing its own length; and / or The first handle is provided on the track limiting portion and is configured to drive the track limiting portion to switch the working position of the track limiting portion.

5. The crawler chassis according to claim 1, characterized in that: The junction between the bottom surface and the side surface of the insertion end is provided with a rounded corner.

6. The crawler chassis according to any one of claims 1 to 5, characterized in that: The at least one crawler track limiting portion comprises a first crawler track limiting portion (13A) and a second crawler track limiting portion (13B), wherein the first crawler track limiting portion (13A) and the second crawler track limiting portion (13B) are arranged along the front-rear direction of the crawler chassis.

7. A tracked vehicle, characterized in that: Comprising a tracked chassis according to any one of claims 1 to 6.

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