Riding wheel limiting device for mixer truck

Abstract

The utility model discloses a riding wheel limiting device for a mixer truck, which is characterized in that one of an upper panel of a rear support and a base of a riding wheel component is provided with a waist-shaped mounting hole, the other one is provided with a round hole, and a mounting bolt penetrates through the round hole of the riding wheel component and the waist-shaped mounting hole of the rear support and is fastened through a mounting nut; one side of the riding wheel assembly is subjected to acting force of the tank body in the long axis direction of the kidney-shaped mounting hole, the limiting device comprises a mounting plate, the mounting plate is mounted on the upper panel, the mounting plate is located on the side, away from the tank body, of the riding wheel assembly, the mounting plate has a set thickness, a threaded hole is formed in the mounting plate, and the axial direction of the threaded hole is the same as the long axis direction of the kidney-shaped mounting hole; the limiting bolt is connected to the threaded hole, and the tail end of the limiting bolt abuts against the base of the riding wheel assembly; the driving mechanism is used for controlling the tail end of the limiting bolt to abut against the riding wheel assembly. The limiting device adjusts the screwing-out length of the limiting bolt, limits the position of the riding wheel, and prevents the riding wheel from moving to cause that the roller path of the mixer truck tank slides from the arc surface of the riding wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of mixer trucks, in particular to a supporting wheel limiting device for mixer trucks. Background Art

[0002] The rear support of the mixer truck should be a closed box structure to support the tail of the mixer truck tank so that the tank body can lie horizontally on the frame. The plane of the upper panel of the rear support and the horizontal plane of the sub-frame should form a certain angle to ensure the design installation angle of the barrel of the entire mixer truck. At the same time, the mixer truck should meet the volume of the actual transport carrier.

[0003] The support roller is a rigid component used to support the raceway of the tank body. The rotation is achieved by fixing the bearing roller on the pin.

[0004] A round hole is provided on the base of the supporting wheel, and a waist-shaped mounting hole is provided on the upper panel of the rear support. The mounting bolts penetrate the round hole of the supporting wheel and the waist-shaped mounting hole of the rear support and are fastened by mounting nuts, that is, the supporting wheel is fixed to the rear support by the mounting bolts and mounting nuts.

[0005] However, during the use of the supporting wheel, the supporting wheel is subjected to force along the length direction of the waist-shaped mounting hole, and the supporting wheel mounting nut may become loose during use. If the mounting nut is not re-tightened regularly, the mounting bolt will slide along the waist-shaped mounting hole of the rear support, causing the tank raceway and the supporting wheel to derail, resulting in a quality accident.

[0006] In the prior art, the supporting wheel of the mixer truck has no limit device. Even if there is a limit device, it is made by on-site adaptation welding, and a baffle is welded on the upper panel to block the supporting wheel. However, the traditional baffle is inconvenient to make, the manufacturing process is complicated, and the welding and fixing position of the upper panel is easy to cause paint contamination and damage to adjacent parts, increasing the workload of repainting.

[0007] In summary, how to effectively solve the problem of easy displacement of the supporting wheel is a problem that those skilled in the art urgently need to solve. Utility Model Content

[0008] The utility model aims to provide a supporting wheel limiting device for a mixer truck, which can adjust the screw-out length of the limiting bolt, limit the position of the supporting wheel, prevent the moving position of the supporting wheel from causing the mixer truck tank raceway to slip off the arc surface of the supporting wheel, and prevent quality accidents from occurring.

[0009] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0010] A supporting wheel limiting device for a mixer truck, wherein one of the upper panel of the rear support and the base of the supporting wheel assembly is provided with a waist-shaped mounting hole and the other is provided with a round hole, the mounting bolts penetrate the round hole of the supporting wheel assembly and the waist-shaped mounting hole of the rear support and are fastened by the mounting nuts, one side of the supporting wheel assembly is subjected to the force of the tank body along the long axis direction of the waist-shaped mounting hole, and the limiting device comprises:

[0011] A mounting plate, which is mounted on the upper plate, the mounting plate is located on the side of the supporting wheel assembly away from the tank body, the mounting plate has a set thickness, and a threaded hole is provided on the mounting plate, and the axial direction of the threaded hole is the same as the long axis direction of the waist-shaped mounting hole;

[0012] A limiting bolt connected to the threaded hole, wherein the end of the limiting bolt is pressed against the base of the supporting wheel assembly;

[0013] The driving mechanism is used to control the end of the limiting bolt to tighten the supporting wheel assembly.

[0014] Optionally, the upper panel of the rear support is tilted, the tank body is arranged on the lower side of the upper panel, the limiting device is arranged on the higher side of the upper panel, and the end of the limiting bolt is an arc surface.

[0015] Optionally, at least two parallel mounting plates are mounted on the upper panel, and the outer side surface of one of the mounting plates is flush with the edge of the upper panel.

[0016] Optionally, a tightening nut is further included, wherein the tightening nut is connected to the limiting bolt and an end surface thereof is in contact with a side of the mounting plate away from the supporting wheel assembly.

[0017] Optionally, the mounting plate is perpendicular to the long axis of the waist-shaped mounting hole.

[0018] Optionally, the mounting plate and the upper panel are detachably connected, and the limiting device also includes an adjusting mechanism for adjusting the connection position between the mounting plate and the upper panel so that the mounting plate is perpendicular to the long axis of the waist-shaped mounting hole.

[0019] Optionally, the mounting plate is connected to the upper panel via fasteners, the cross-section of the connecting hole on the upper panel is larger than the cross-section of the fasteners, the cross-section of the fasteners is equal to the cross-section of the mounting hole of the mounting plate, and the position of the fastener connected to the connecting hole of the upper panel is adjustable.

[0020] Optionally, the driving mechanism comprises:

[0021] A distance sensor disposed at the end of the limiting bolt and used to detect the distance between the end of the limiting bolt and the supporting wheel assembly;

[0022] A rotating assembly connected to the distance sensor and used for adjusting the limiting bolt to rotate in the threaded hole when there is a gap between the end of the limiting bolt and the supporting wheel assembly so that the end of the limiting bolt presses against the rotating assembly of the supporting wheel assembly.

[0023] Optionally, the driving mechanism further comprises an alarm connected to the rotating assembly for issuing an alarm when the end of the limiting bolt fails to tighten against the supporting wheel assembly.

[0024] Optionally, the driving mechanism further comprises:

[0025] A distance sensor for detecting the distance between the tank body and the supporting wheel assembly,

[0026] The distance measuring sensor is connected to the rotating assembly. When a gap is detected between the tank body and the supporting wheel assembly, the rotating assembly adjusts the limiting bolt to rotate in the threaded hole so that the limiting bolt drives the supporting wheel assembly to move along the waist-shaped mounting hole and contact the tank body.

[0027] The utility model provides a supporting wheel limiting device for a mixer truck, wherein a waist-shaped mounting hole is provided on the upper panel of the rear support, a round hole is provided on the base of the supporting wheel assembly, the supporting wheel assembly and the rear support are connected by mounting bolts and mounting nuts, and the mounting bolts can be moved along the length direction of the waist-shaped mounting hole to adjust the positions of the supporting wheel assembly and the rear support, thereby ensuring that the supporting wheel assembly is properly positioned and can support the rolling track of the tank body, and the tank body applies a thrust along the long axis direction of the waist-shaped mounting hole to one side of the supporting wheel assembly.

[0028] In order to prevent the mounting bolts from sliding along the waist-shaped mounting hole of the rear seat, a limiting device is provided on the rear support. The limiting device is located on the side of the roller assembly away from the tank body. The limiting device and the tank body exert opposite forces on the roller assembly. The limiting device includes a mounting plate, a limiting bolt and a driving mechanism. The mounting plate is mounted on the upper panel. The mounting plate has a set thickness. The mounting plate is provided with a threaded hole. The limiting bolt is connected to the threaded hole. After the roller of the tank body is supported on the roller assembly, the driving mechanism controls the end of the limiting bolt to press against the base of the roller assembly to achieve the support of the roller assembly on the tank body roller. When the tank body applies a thrust to the roller assembly to make the roller assembly move along the waist-shaped mounting hole, the limiting bolt blocks the roller assembly, balances the thrust of the tank body on the roller assembly, and prevents the mounting bolt of the roller assembly from moving along the waist-shaped mounting hole. In this process, the mounting bolt only bears axial tensile force, but not torque. The mounting nut is not easy to loosen in cooperation with the mounting bolt, and the tank body raceway and the roller are not easy to derail. The connection of the roller assembly is safer and more reliable.

[0029] The utility model provides a supporting wheel limiting device for a mixer truck. After the supporting wheel assembly is fixed and adjusted on the upper panel of the rear support, the screw-out length of the limiting bolt is adjusted to ensure that the end face of the limiting bolt bears against the base of the supporting wheel assembly, so that the limiting bolt can remain tightened without loosening for a long time without being re-tightened, thereby ensuring that the connection between the mounting nut and the mounting bolt is effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A front view of a supporting wheel limiting device for a mixer truck provided in a specific embodiment of the utility model;

[0032] Figure 2 for Figure 1 Cross-sectional view of the middle DD;

[0033] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0034] Figure 4 for Figure 1 A partial enlarged view of point B in the middle.

[0035] The following are marked in the accompanying drawings:

[0036] 1-rear support; 11-upper panel; 2-support wheel assembly; 21-base; 3-mounting bolts; 4-mounting nuts; 5-mounting plate; 6-limiting bolts; 7-tightening nuts. DETAILED DESCRIPTION

[0037] The core of the utility model is to provide a supporting wheel limiting device for a mixer truck, which adjusts the screw-out length of the limiting bolt, limits the position of the supporting wheel, prevents the moving position of the supporting wheel from causing the mixer truck tank raceway to slip from the arc surface of the supporting wheel, and prevents quality accidents from occurring.

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] Please refer to Figures 1 to 4 , Figure 1 A front view of a supporting wheel limiting device for a mixer truck provided in a specific embodiment of the utility model; Figure 2 for Figure 1 Cross-sectional view of the middle DD; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 for Figure 1 A partial enlarged view of point B in the middle.

[0040] The utility model provides a supporting wheel limiting device for a mixer truck. One of the upper panel 11 of the rear support 1 and the base 21 of the supporting wheel assembly 2 is provided with a waist-shaped mounting hole and the other is provided with a round hole. The mounting bolt 3 penetrates the round hole of the supporting wheel assembly 2 and the waist-shaped mounting hole of the rear support 1 and is fastened by the mounting nut 4. One side of the supporting wheel assembly 2 is subjected to the force of the tank body along the long axis direction of the waist-shaped mounting hole. The limiting device includes:

[0041] The mounting plate 5 is mounted on the upper panel 11. The mounting plate 5 is located on the side of the supporting wheel assembly 2 away from the tank body. The mounting plate 5 has a set thickness. The mounting plate 5 is provided with a threaded hole. The axial direction of the threaded hole is the same as the long axis direction of the waist-shaped mounting hole.

[0042] A limiting bolt 6 is connected to the threaded hole, and the end of the limiting bolt 6 is pressed against the base 21 of the supporting wheel assembly 2;

[0043] The driving mechanism is used to control the end of the limiting bolt 6 to tighten the supporting wheel assembly 2.

[0044] In the above structure, a waist-shaped mounting hole is provided on the upper panel 11 of the rear support 1, and a round hole is provided on the base 21 of the roller assembly 2. The roller assembly 2 and the rear support 1 are connected by mounting bolts 3 and mounting nuts 4. The mounting bolts 3 can move along the length direction of the waist-shaped mounting hole to adjust the position of the roller assembly 2 and the rear support 1 to ensure that the roller assembly 2 is in a suitable position and can support the roller track of the tank body. When the roller track of the tank body presses on the roller assembly 2, the tank body applies a thrust to one side of the roller assembly 2 along the long axis direction of the waist-shaped mounting hole.

[0045] In order to prevent the mounting bolt 3 from sliding along the waist-shaped mounting hole of the rear seat, causing the tank body raceway and the supporting roller assembly 2 to derail, a limiting device is arranged on the rear support 1. The limiting device is located on the side of the supporting roller assembly 2 away from the tank body. The limiting device and the tank body are separated on both sides of the supporting roller assembly 2, and the limiting device and the tank body exert forces on the supporting roller assembly 2 in opposite directions.

[0046] The limiting device includes a mounting plate 5, a limiting bolt 6 and a driving mechanism. The mounting plate 5 is mounted on the upper panel 11. The mounting plate 5 has a set thickness and has a high strength. The mounting plate 5 can be a flat plate with a certain thickness, which is easy to process, or a serrated plate with high strength, or a curved plate with waves on both sides.

[0047] A threaded hole is provided on the mounting plate 5, and a limit bolt 6 is connected to the threaded hole. When the roller of the tank body is supported on the supporting roller assembly 2, the driving mechanism controls the end of the limit bolt 6 to press against the base 21 of the supporting roller assembly 2, thereby realizing the support of the supporting roller assembly 2 for the tank body roller.

[0048] When the tank body applies thrust to the roller assembly 2 to make the roller assembly 2 move along the waist-shaped mounting hole, the limit bolt 6 blocks the roller assembly 2, balances the thrust of the tank body on the roller assembly 2, and prevents the mounting bolt 3 of the roller assembly 2 from moving along the waist-shaped mounting hole. In this process, the mounting bolt 3 only bears axial tensile force, not torque, and the mounting nut 4 in cooperation with the mounting bolt 3 is not easy to loosen, the tank body raceway and the roller are not easy to derail, and the connection of the roller assembly 2 is safer and more reliable.

[0049] The utility model provides a supporting wheel limiting device for a mixer truck. After the supporting wheel assembly 2 is fixed and adjusted on the upper panel 11 of the rear support 1, the screwing-out length of the limiting bolt 6 is adjusted to ensure that the end face of the limiting bolt 6 bears against the base 21 of the supporting wheel assembly 2, so that the limiting bolt 6 can remain tightened without loosening for a long time without being re-tightened, thereby ensuring that the connection between the mounting nut 4 and the mounting bolt 3 is effective.

[0050] Based on the above specific embodiment, the upper panel 11 of the rear support 1 is tilted, the tank body is arranged on the lower side of the upper panel 11, the limiting device is arranged on the higher side of the upper panel 11, and the end of the limiting bolt 6 is an arc surface.

[0051] In a specific embodiment, the upper panel 11 of the rear support 1 is tilted, with one side high and the other side low, and the rear support 1 is an inclined flat plate. The tank body is arranged on the lower side of the upper panel 11, and the limiting device is arranged on the higher side of the upper panel 11. The roller of the tank body is pressed on the side of the supporting roller assembly 2, and the thrust direction is along the direction of the upper panel 11. The thrust of the tank body needs to overcome the gravity component of the supporting roller assembly 2 along the direction of the upper panel 11 to push the supporting roller assembly 2 to move along the waist-shaped mounting hole, so that the blocking force of the limiting bolt 6 on the supporting roller assembly 2 is reduced compared with the thrust of the tank body, and the bearing capacity of the limiting bolt 6 is reduced.

[0052] Furthermore, the end of the limiting bolt 6 is an arc surface, and the arc surface contacts the base 21. When the thrust direction of the tank roller on the supporting wheel assembly 2 is not parallel to the axis of the limiting bolt 6, the limiting bolt 6 can automatically adjust the contact point between the arc surface and the supporting wheel assembly 2 to achieve self-alignment adjustment, ensuring that the end of the limiting bolt 6 can always press against the supporting wheel assembly 2.

[0053] In a preferred embodiment, a rubber pad is provided at the end of the limit bolt 6 or on the base 21 of the support wheel assembly 2, that is, a rubber pad is provided between the limit bolt 6 and the support wheel assembly 2 to prevent the support wheel assembly 2 from being pressed against the limit bolt 6 and leaving an indentation.

[0054] On the basis of the above-mentioned specific embodiments, at least two parallel mounting plates 5 are mounted on the upper panel 11 , and the outer side surface of one of the mounting plates 5 is flush with the edge of the upper panel 11 .

[0055] In a specific embodiment, two mounting plates 5 are mounted on the upper panel 11, and the two mounting plates 5 are parallel. One of the mounting plates 5 is arranged at the edge of the upper panel 11, and the outer side surface of the mounting plate 5 is flush with the edge of the upper panel 11. The other mounting plate 5 is arranged between the edge mounting plate 5 and the supporting wheel assembly 2. At least one of the mounting plates 5 has a threaded hole, and the mounting plate 5 without a threaded hole plays a supporting role for the limit bolt 6. The mounting plate 5 with a threaded hole not only plays a role in supporting the limit bolt 6, but also has a role in locking the limit bolt 6.

[0056] There is a distance between at least two mounting plates 5 , and at least two mounting plates 5 support each other together, so that there are at least two supporting points in the axial direction of the limiting bolt 6 , which prevents the cantilever at the end of the limiting bolt 6 from fluctuating greatly and improves the stability of the limiting bolt 6 .

[0057] On the basis of the above-mentioned specific embodiments, a tightening nut 7 is further included. The tightening nut 7 is connected to the limiting bolt 6 and its end face is in contact with a side of the mounting plate 5 away from the supporting wheel assembly 2 .

[0058] In actual application, after the support wheel assembly 2 is fixed and adjusted on the upper panel 11 of the rear support 1, the parallel nut is first screwed into the screw rod of the limit bolt 6, and then passed through the threaded hole of the mounting plate 5, and the screw-out length of the limit bolt 6 is adjusted to ensure that the end face of the limit bolt 6 is against the base 21 of the support wheel assembly 2, and finally the parallel nut is tightened to make the end face of the parallel nut fit with the side of the mounting plate 5 away from the support wheel assembly 2.

[0059] In the above embodiment, the parallel nut presses the mounting plate 5, the parallel nut and the mounting plate 5 are equivalent to double nuts, and the limit bolt 6 is locked by the double nuts. After the two nuts are tightened, the axial force generated between the nuts increases the friction between the nut teeth and the bolt teeth to prevent the nut from automatically loosening.

[0060] It should be noted that the anti-loosening effect of the locking nut mainly depends on the interaction force between the meshing threads of the nut and the bolt. There are many ways to improve the interaction force between the meshing threads, such as structural improvement of the nut thread, roughening of the nylon of the nylon nut, surface treatment of the thread, etc.

[0061] On the basis of the above-mentioned specific embodiments, the mounting plate 5 is perpendicular to the long axis of the waist-shaped mounting hole.

[0062] In practical applications, in order to make the axial direction of the limiting bolt 6 consistent with the long axis direction of the waist-shaped mounting hole, the limiting bolt 6 generates a positive force along the waist-shaped mounting hole on the supporting wheel assembly 2 without generating a torsional moment, thereby preventing the supporting wheel assembly 2 from twisting due to the action of the limiting bolt 6.

[0063] Based on the above-mentioned specific embodiments, the mounting plate 5 and the upper panel 11 are detachably connected, and the limiting device also includes an adjustment mechanism for adjusting the connection position of the mounting plate 5 and the upper panel 11 so that the mounting plate 5 is perpendicular to the long axis of the waist-shaped mounting hole.

[0064] In practical applications, the mounting plate 5 has a connecting flange, and the connecting flange and the upper panel 11 have matching connecting holes, and the connecting bolts are connected to the connecting holes of the two. When it is necessary to connect the limiting device, the mounting plate 5 is connected to the upper panel 11 to limit the movement of the supporting wheel assembly 2. When it is not necessary to connect the limiting device, the mounting plate 5 is removed from the upper panel 11, and the connection position can be painted normally, which will not cause paint pollution and damage to adjacent parts, and save the repainting process.

[0065] Of course, the detachable connection between the mounting plate 5 and the upper panel 11 is only a preferred embodiment, not the only one. The bottom surface of the mounting plate 5 can also be welded to the upper panel 11, which has better integrity.

[0066] The limiting device also includes an adjusting mechanism for adjusting the connection position between the mounting plate 5 and the upper panel 11 so that the mounting plate 5 is perpendicular to the long axis of the waist-shaped mounting hole. When the mounting plate 5 is deformed after long-term use, the position of the mounting plate 5 is adjusted in real time by the adjusting mechanism to keep the mounting plate 5 perpendicular to the long axis of the waist-shaped mounting hole, thereby improving the limiting effect of the limiting device and extending the service life of the mounting plate 5.

[0067] Based on the above-mentioned specific embodiments, the mounting plate 5 is connected to the upper panel 11 by fasteners, the cross-section of the connecting hole on the upper panel 11 is larger than the cross-section of the fasteners, the cross-section of the fasteners is equal to the cross-section of the mounting hole of the mounting plate 5, and the position of the fastener connected to the connecting hole of the upper panel 11 is adjustable.

[0068] In the above embodiment, the connection position and angle between the mounting plate 5 and the upper panel 11 can be adjusted through a large hole that is larger than the cross section of the fastener, and the specific adjustment range can be adjusted according to the size of the large hole and the size of the fastener. The mounting plate 5 is a floating adjustable connection, which reduces the installation requirements of the mounting plate 5, has a simple structure, and is easy to operate.

[0069] Based on the above specific embodiments, the driving mechanism includes:

[0070] A distance sensor is arranged at the end of the limit bolt 6 and is used to detect the distance between the end of the limit bolt 6 and the supporting wheel assembly 2;

[0071] A rotating component connected to a distance sensor, used to adjust the limiting bolt 6 to rotate in the threaded hole when there is a gap between the end of the limiting bolt 6 and the supporting wheel assembly 2 so that the end of the limiting bolt 6 presses against the supporting wheel assembly 2.

[0072] In actual application, the distance sensor detects the distance from the end of the limit bolt 6 to the supporting wheel assembly 2, and the rotating assembly receives the distance information detected by the distance sensor. If the distance is zero, it is concluded that the end of the limit bolt 6 is in close contact with the supporting wheel assembly 2, and there is no gap between the two. If the distance is not zero, it is concluded that the end of the limit bolt 6 is not in contact with the supporting wheel assembly 2, and there is a gap between the two. Then, the limit bolt 6 is adjusted to rotate in the threaded hole so that the end of the limit bolt 6 presses against the supporting wheel assembly 2, eliminating the hidden danger of the supporting wheel assembly 2 moving along the waist-shaped mounting hole, and preventing the limit bolt 6 from loosening and failing due to long-term non-tightening.

[0073] On the basis of the above-mentioned specific embodiments, the driving mechanism further comprises an alarm connected to the rotating assembly for issuing an alarm when the end of the limiting bolt 6 is not pressed against the supporting wheel assembly 2 .

[0074] In actual application, the rotating component receives the distance information detected by the distance sensor, and when it is concluded that the end of the limit bolt 6 is not in contact with the support roller assembly 2 and there is a gap between the two, the rotating component sends a non-in-place signal to the alarm, and the alarm sends an alarm prompt, which can be a sound prompt or a flashing LED light to remind the operator that the end of the limit bolt 6 is not tight against the support roller assembly 2, and it is necessary to adjust the limit bolt 6 in time to make it close to the support roller assembly 2 to eliminate the hidden danger of the support roller assembly 2 moving along the waist-shaped mounting hole.

[0075] Based on the above specific embodiments, the driving mechanism further includes:

[0076] A distance sensor for detecting the distance between the tank body and the supporting wheel assembly 2,

[0077] The distance measuring sensor is connected to the rotating assembly. When a gap is detected between the tank body and the supporting wheel assembly 2, the rotating assembly adjusts the limit bolt 6 to rotate in the threaded hole so that the limit bolt 6 drives the supporting wheel assembly 2 to move along the waist-shaped mounting hole and contact the tank body.

[0078] In actual application, the distance sensor detects the distance between the tank body and the roller assembly 2, and the rotating assembly receives the distance information detected by the distance sensor. If the distance is zero, it is concluded that the tank body's roller track is in close contact with the roller assembly 2, there is no gap between the two, and the tank body's roller track is supported on the roller assembly 2. If the distance is not zero, it is concluded that the tank body's roller track is not in contact with the roller assembly 2, there is a gap between the two, and the tank body's roller track is not supported on the roller assembly 2. Then, the limit bolt 6 is adjusted to rotate in the threaded hole so that the roller assembly 2 moves toward one side of the tank body along the waist-shaped mounting hole, so that the roller assembly 2 contacts the tank body's roller track, and ensures that the tank body's roller track is supported on the roller assembly 2.

[0079] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] The above is a detailed introduction to the supporting wheel limiting device for a mixer truck provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A supporting wheel limiting device for a mixer truck, characterized in that: One of the upper panel (11) of the rear support (1) and the base (21) of the wheel assembly (2) is provided with a waist-shaped mounting hole and the other is provided with a round hole. The mounting bolt (3) penetrates into the round hole of the wheel assembly (2) and the waist-shaped mounting hole of the rear support (1) and is fastened by a mounting nut (4). One side of the wheel assembly (2) is subjected to a force acting on it by the tank body along the long axis direction of the waist-shaped mounting hole. The limiting device comprises: a mounting plate (5) mounted on the upper panel (11), the mounting plate (5) being located on a side of the supporting wheel assembly (2) away from the tank body, the mounting plate (5) having a set thickness, the mounting plate (5) being provided with a threaded hole, the axial direction of the threaded hole being in the same direction as the long axis direction of the waist-shaped mounting hole; A limiting bolt (6) connected to the threaded hole, wherein the end of the limiting bolt (6) is pressed against the base (21) of the supporting wheel assembly (2); A driving mechanism is used to control the end of the limiting bolt (6) to press against the supporting wheel assembly (2).

2. The supporting wheel limiting device for a mixer truck according to claim 1, characterized in that: The upper panel (11) of the rear support (1) is arranged tilted, the tank body is arranged on the lower side of the upper panel (11), the limiting device is arranged on the higher side of the upper panel (11), and the end of the limiting bolt (6) is an arc surface.

3. The supporting wheel limiting device for a mixer truck according to claim 2, characterized in that: At least two parallel mounting plates (5) are mounted on the upper panel (11), wherein the outer side surface of one of the mounting plates (5) is flush with the edge of the upper panel (11).

4. The supporting wheel limiting device for a mixer truck according to claim 2, characterized in that: It also includes a tightening nut (7), the tightening nut (7) being connected to the limiting bolt (6) and having an end surface thereof in contact with a side of the mounting plate (5) away from the supporting wheel assembly (2).

5. The supporting wheel limiting device for a mixer truck according to claim 2, characterized in that: The mounting plate (5) is perpendicular to the long axis of the waist-shaped mounting hole.

6. The supporting wheel limiting device for a mixer truck according to claim 5, characterized in that: The mounting plate (5) and the upper panel (11) are detachably connected, and the limiting device further comprises an adjustment mechanism for adjusting the connection position of the mounting plate (5) and the upper panel (11) so that the mounting plate (5) is perpendicular to the long axis of the waist-shaped mounting hole.

7. The supporting wheel limiting device for a mixer truck according to claim 6, characterized in that: The mounting plate (5) is connected to the upper panel (11) via a fastener; the cross-section of a connection hole on the upper panel (11) is larger than the cross-section of the fastener; the cross-section of the fastener is equal to the cross-section of the mounting hole of the mounting plate (5); and the position of the fastener connected to the connection hole of the upper panel (11) is adjustable.

8. The supporting wheel limiting device for a mixer truck according to any one of claims 1 to 7, characterized in that: The driving mechanism comprises: a distance sensor disposed at the end of the limiting bolt (6) and used to detect the distance between the end of the limiting bolt (6) and the supporting wheel assembly (2); A rotating assembly connected to the distance sensor and used to adjust the limiting bolt (6) to rotate in the threaded hole when there is a gap between the end of the limiting bolt (6) and the supporting wheel assembly (2) so that the end of the limiting bolt (6) presses against the supporting wheel assembly (2).

9. The supporting wheel limiting device for a mixer truck according to claim 8, characterized in that: The driving mechanism also includes an alarm connected to the rotating assembly and used to issue an alarm when the end of the limiting bolt (6) fails to press against the supporting wheel assembly (2).

10. The supporting wheel limiting device for a mixer truck according to claim 9, characterized in that: The driving mechanism further comprises: a distance measuring sensor for detecting the distance between the tank body and the supporting wheel assembly (2), The distance measuring sensor is connected to the rotating assembly, and when a gap is detected between the tank body and the supporting wheel assembly (2), the rotating assembly adjusts the limiting bolt (6) to rotate in the threaded hole so that the limiting bolt (6) drives the supporting wheel assembly (2) to move along the waist-shaped mounting hole and contact the tank body.

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