Auxiliary support device of pneumatic tool for tire disassembly and assembly

Abstract

An auxiliary support device of a pneumatic tool for tire disassembly and assembly comprises a bidirectional self-locking mechanism, a fixed cylinder is connected to the inner wall of the bidirectional self-locking mechanism, an elastic piece is attached to the inner wall of the fixed cylinder, elbows are arranged at the two ends of the elastic piece, and the elastic piece rotates or is locked along the inner wall of the fixed cylinder; the first end of the driving rotating shaft is rotationally connected outside the bidirectional self-locking mechanism, and the second end is in contact with the interior of the elbow; the first end of the driven cylinder is rotationally connected to the inner wall of the bidirectional self-locking mechanism, and the second end is in contact with the outside of the elbow; a bracket is arranged at the upper end of the bidirectional self-locking mechanism; the moving mechanism is connected to the lower portion of the driven cylinder, and the driven cylinder rotates to drive the moving mechanism to move up and down. A bottom support; the bottom face support is connected to the lower portion of the moving mechanism. The bidirectional self-locking function of the device after the device stops at will is achieved through the bidirectional self-locking mechanism, hand-cranking force is transmitted to the movable lead screw through the pair of gear transmission mechanisms, ascending or descending of the device is achieved, stability is good, and labor intensity is low.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile tire assembly equipment, in particular to an auxiliary bracket device for a tire disassembling and assembling pneumatic tool. Background Art

[0002] In order to ensure the large carrying capacity of freight, heavy-duty commercial vehicles have a large number of tires with large sizes and specifications, a large number of tire fixing nuts, and a large tightening torque. When disassembling and assembling the tires for maintenance, heavy-duty and high-torque pneumatic impact wrenches, also known as pneumatic air cannons, are generally required. Due to the large size and weight of pneumatic air cannons, when disassembling and assembling the tire fixing nuts for maintenance, the operator needs to carry the pneumatic air cannon by hand, which has high labor intensity and physical exertion, and the efficiency of tire bolt disassembly and assembly is low.

[0003] The Chinese patent document with publication number CN218403438U discloses a pneumatic tool auxiliary lifting device for automobile tire assembly, including a walking bottom frame, a column beam, a cantilever beam and a spring balancer. The column beam is installed on the walking bottom frame, one end of the cantilever beam is rotatably connected to the upper end of the column beam, and the other end is suspended with a spring balancer. The steel rope of the spring balancer suspends the pneumatic tool. The above-mentioned cantilever beam is connected to the column beam through a rotating shaft assembly. The rotating shaft assembly includes an axle core, a sleeve and a fixed plate. The sleeve is fixedly connected to the top of the column beam, the upper end of the axle core is fixedly connected to the lower side of the end of the cantilever beam, and the lower end is inserted into the sleeve. This utility model solves the problems of heavy weight, large volume and inconvenient high-position operation of pneumatic air cannons in the existing tire installation process. However, this patent has the following disadvantages:

[0004] (1) High height and poor stability. Since it needs to be hoisted by cantilever steel ropes, a certain height of column beam is required, which has poor stability and often shakes during use. Pneumatic jackhammers vibrate greatly during use, resulting in shaking and instability.

[0005] (2) Heavy weight and inconvenient to move and store. Because the column is high and requires metal parts such as cantilever beams, the base area is large to enhance the stability of the base. Therefore, it is heavy and bulky, making it inconvenient to move and store.

[0006] (3) Increased labor intensity. Since the component that realizes the up and down movement is a spring, the spring is extended or shortened by the continuous downward or upward pressure of the human body to increase the upward and downward movement distance. When the wind cannon is actually used, the upward and downward movement distance is more than 40cm, and the continuous downward pressure or upward force of the human body is large, which increases the labor intensity. Utility Model Content

[0007] The utility model aims to provide a tire disassembling and assembly pneumatic tool auxiliary support device, which solves the problems of poor stability, inconvenient mobile storage and high labor intensity of the existing tire disassembling and assembly pneumatic tool auxiliary devices.

[0008] The utility model provides the following solutions:

[0009] The utility model discloses a tire disassembly and assembly pneumatic tool auxiliary support device, comprising:

[0010] A two-way self-locking mechanism, wherein the inner wall of the two-way self-locking mechanism is connected to a fixed cylinder, an elastic member is attached to the inner wall of the fixed cylinder, elbows are arranged at both ends of the elastic member, and the elastic member rotates or locks along the inner wall of the fixed cylinder;

[0011] A driving shaft, wherein a first end of the driving shaft is rotatably connected to the outside of the two-way self-locking mechanism, and a second end of the driving shaft is in contact with the inside of the elbow;

[0012] A driven cylinder, wherein the first end of the driven cylinder is rotatably connected to the inner wall of the two-way self-locking mechanism, and the second end is in contact with the outside of the elbow; a bracket is provided at the upper end of the two-way self-locking mechanism;

[0013] A moving mechanism, wherein the moving mechanism is connected to the lower part of the driven cylinder, and the driven cylinder rotates to drive the moving mechanism to move up and down;

[0014] Bottom support; the bottom support is connected to the lower part of the moving mechanism.

[0015] Preferably, the moving mechanism comprises a driving gear, a driven gear and a movable screw;

[0016] The driving gear is connected to the driven cylinder, the driven gear is meshed with the driving gear at 90 degrees, and the upper end of the movable screw rod is rotatably connected to the lower part of the driven gear.

[0017] Preferably, the bottom support comprises a movable screw rod joint, a column frame and a base frame;

[0018] The movable screw rod joint is interference connected to the upper end of the base frame, the lower end of the movable screw rod passes through the movable screw rod joint and is connected to the inside of the column frame, and the lower end of the movable screw rod is connected to the movable screw rod joint through a threaded sleeve;

[0019] The outer periphery of the movable screw rod is provided with an external thread, and the external thread and the threaded sleeve rotate in coordination to enable the movable screw rod to move up and down.

[0020] Preferably, a universal wheel is provided at the lower end of the base frame.

[0021] Preferably, a rolling bearing is sleeved on the movable screw rod, and the rolling bearing is located between the movable screw rod and the driven gear.

[0022] Preferably, a limiting protrusion is provided on the upper portion of the movable screw rod.

[0023] Preferably, the first end of the active rotating shaft connected to the outside of the two-way self-locking mechanism is a rocker arm and a handle; the rocker arm is in a vertical direction, and the handle is vertically connected to the upper end of the rocker arm.

[0024] Preferably, the bracket is V-shaped, and a rubber pad is adhered inside the bracket.

[0025] Preferably, a bushing is provided between the first end of the active rotating shaft and the bidirectional self-locking mechanism.

[0026] Compared with the prior art, the utility model has the following advantages:

[0027] 1. The tire disassembly and assembly pneumatic tool auxiliary support device provided by the utility model realizes the two-way self-locking function of the device after any stop through the two-way self-locking mechanism. The force applied to the active shaft is transmitted to the moving mechanism through the driven cylinder, driving the moving mechanism to move up and down, and has good stability.

[0028] 2. The tire disassembly and assembly pneumatic tool auxiliary bracket device provided by the utility model transmits the hand-cranking force to the movable screw rod through a pair of gear transmission mechanisms. The movable screw rod and the screw sleeve rotate in coordination to realize the up and down movement of the movable screw rod, thereby driving the upper part of the device to rise or fall. The device can be quickly raised and lowered by hand-cranking force, and the labor intensity is low.

[0029] 3. The tire disassembly and assembly pneumatic tool auxiliary bracket device provided by the utility model has a self-locking spring arranged in the fixed cylinder, and elbows are arranged at both ends of the self-locking spring. The inner and outer sides of the elbows are respectively in contact with the active rotating shaft and the driven cylinder. No matter whether the active rotating shaft rotates forward or reversely, the self-locking spring is always in a contracted state. The contraction of the self-locking spring causes a gap to be generated between the spring and the fixed cylinder, thereby realizing rotation. No matter in which direction the driven cylinder rotates, the self-locking spring generates friction with the fixed cylinder and cannot realize rotation. Therefore, a two-way self-locking function after stopping at any position is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods 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 This is a schematic structural diagram of the auxiliary support device for the tire disassembling and assembly pneumatic tool according to an embodiment of the utility model;

[0032] Figure 2This is a schematic diagram of the internal structure of the tire disassembly and assembly pneumatic tool auxiliary support device according to an embodiment of the utility model.

[0033] Among them: 1-bidirectional self-locking mechanism; 11-handle handle; 12-rocker arm; 13-bushing; 14-driving shaft; 15-elastic member; 16-driven cylinder; 17-fixed cylinder; 18-fixed bracket; 19-bracket;

[0034] 2-moving mechanism; 22-driving gear; 23-driven gear; 24-movable screw; 25-rolling bearing; 26-limiting protrusion;

[0035] 3- bottom bracket; 31- movable screw rod joint; 32- column frame; 34- base frame; 35- universal wheel. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0037] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two.

[0038] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0039] It should be understood that although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the descriptions. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first.

[0040] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0041] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0042] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0043] See also Figure 1-Figure 2 , an auxiliary support device for a tire disassembling and assembly pneumatic tool provided in an embodiment of the present application includes: a two-way self-locking mechanism 1, wherein the inner wall of the two-way self-locking mechanism 1 is connected to a fixed cylinder 17, an elastic member 15 is attached to the inner wall of the fixed cylinder 17, elbows are arranged at both ends of the elastic member 15, and the elastic member 15 rotates or locks along the inner wall of the fixed cylinder 17; an active rotating shaft 14, wherein a first end of the active rotating shaft 14 is rotatably connected to the outside of the two-way self-locking mechanism 1, and a second end contacts the inside of the elbow; a driven cylinder 16, wherein a first end of the driven cylinder 16 is rotatably connected to the inner wall of the two-way self-locking mechanism 1, and a second end contacts the outside of the elbow; a support 19 is arranged at the upper end of the two-way self-locking mechanism 1; a moving mechanism 2, wherein the moving mechanism 2 is connected to the lower part of the driven cylinder 16, and the driven cylinder 16 rotates to drive the moving mechanism 2 to move up and down; a bottom support 3; the bottom support 3 is connected to the lower part of the moving mechanism 2.

[0044] In this embodiment, the bidirectional self-locking mechanism 1 is a hollow structure, the outer wall of which is a fixed bracket 18, and the bracket 19 is screwed to the upper end of the fixed bracket 18 by bolts, and is used to lift the pneumatic tool. The elastic member 15 is a self-locking spring, and elbows are set at both ends of the self-locking spring. The inner and outer sides of the elbows are in contact with the active shaft 14 and the driven cylinder 16 respectively. When a force is applied to the first end of the active shaft 14 located outside the fixed bracket 18, the direction of the force is along the spring regardless of whether the active shaft rotates forward or reversely, and the spring is always in a contracted state. The contraction of the spring causes a gap to be generated between the spring and the fixed cylinder 17, and the spring can rotate relative to the fixed cylinder 17; on the contrary, since the driven cylinder 16 is set on the outer side of the spring elbow 15, when a force is applied to the driven cylinder 16 alone, no matter in which direction the driven cylinder 16 rotates, the self-locking spring will produce friction with the fixed cylinder 17, and it cannot rotate. Therefore, the bidirectional self-locking function after stopping at any position is realized, and the stability of the device is guaranteed.

[0045] Since the driven cylinder 16 is in contact with the outer side of the spring elbow, the spring elbow transmits force to the driven cylinder 16. When the spring rotates, it drives the driven cylinder 16 to rotate. Since the moving mechanism 2 is connected to the driven cylinder 16, the driven cylinder 16 transmits force to the moving mechanism 2. The rotation of the driven cylinder 16 drives the moving mechanism 2 to move up and down. The device is raised or lowered by applying forward or reverse force to the active shaft 14, and the labor intensity is low.

[0046] The bottom support 3 serves as a supporting mechanism of the device, providing a stable supporting force for the bracket 19, the two-way self-locking mechanism 1 and the moving mechanism.

[0047] Optionally, the moving mechanism 2 includes a driving gear 22, a driven gear 23 and a movable screw 24; the driving gear 22 is connected to the driven cylinder 16, the driven gear 23 is meshed with the driving gear 22 at 90°, and the upper end of the movable screw 24 is connected to the lower part of the driven gear 23. Through the meshing of the driven gear 23 with the driving gear 22 at 90°, the force of the vertical rotation of the driven cylinder 16 is converted into the force of the horizontal rotation of the driven gear 23, and the rotation of the driven gear 23 drives the movable screw 24 to rotate, and the movable screw 24 is driven to move up and down through the rotation of the movable screw 24.

[0048] Furthermore, the bottom support 3 includes a movable screw joint 31, a column frame 32 and a base frame 34; the movable screw joint 31 is interference-connected to the upper end of the base frame 34, the lower end of the movable screw 24 passes through the movable screw joint 31 and is connected to the inside of the column frame 32, and the lower end of the movable screw 24 is connected to the movable screw joint 31 through a screw sleeve; the outer periphery of the movable screw 24 is provided with an external thread, and the external thread and the screw sleeve rotate in cooperation to make the movable screw 24 move up and down. The column frame 32 is a hollow structure, and the movable screw 24 realizes its own up and down movement in the column frame 32 by rotating in the screw sleeve, thereby driving the upper part of the device to rise or fall, greatly reducing the labor intensity.

[0049] Furthermore, universal wheels 35 are provided at the lower end of the base frame 34. Four universal wheels 35 are installed, which can realize the flexible movement of the device in any direction in the plane, and the mobile storage is convenient.

[0050] Further, a rolling bearing 25 is sleeved on the movable screw rod 24, and the rolling bearing 25 is located between the movable screw rod 24 and the driven gear 23. When the driven gear 23 drives the movable screw rod 24 to rotate, there will be a large friction force in the vertical direction, and the rolling bearing 25 can be provided to realize the free rotation of the movable screw rod.

[0051] Furthermore, a limiting protrusion 26 is provided on the upper portion of the movable screw rod 24 to achieve the maximum displacement limit of the movable screw rod 24.

[0052] Optionally, the first end of the active shaft 14 connected to the outside of the two-way self-locking mechanism 1 is the rocker arm 12 and the handle 11; the rocker arm 12 is in a vertical direction, and the handle 11 is vertically connected to the upper end of the rocker arm 12. By manually cranking the handle 11, the hand cranking force is transmitted to the movable screw 24 through the active shaft 14, the driven cylinder 16, the active gear 22, and the driven gear 23, and the function of the fast lifting device is realized by the hand cranking handle 11.

[0053] Optionally, the shape of the bracket 19 is V-shaped, and a rubber pad is pasted inside the bracket 19. When the pneumatic tool is lifted, vibration and noise are reduced.

[0054] Optionally, a bushing 13 is provided between the first end of the active rotating shaft 14 and the two-way self-locking mechanism 1 to prevent the active rotating shaft 14 from being worn too quickly when rotating.

[0055] The working process of the tire disassembly and assembly pneumatic tool auxiliary support device described in this embodiment is as follows: place the pneumatic tool on the V-shaped bracket 19, manually crank the manual handle 11 to raise or lower the device to the required height, and use the pneumatic tool to disassemble and assemble the tire.

[0056] To sum up, the tire disassembly and assembly pneumatic tool auxiliary bracket device described in this embodiment realizes the two-way self-locking function of the device after it stops at any time through the two-way self-locking mechanism. The hand-crank force is transmitted to the movable screw rod through a pair of gear transmission mechanisms. The movable screw rod and the screw sleeve rotate in coordination to realize the up and down movement of the movable screw rod, thereby driving the upper part of the device to rise or fall. The device can be quickly raised and lowered by hand-cranking force, with good stability and low labor intensity.

[0057] Finally, it should be noted that 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 referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0058] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tire disassembly and assembly pneumatic tool auxiliary support device, characterized in that: include: A two-way self-locking mechanism (1), wherein the inner wall of the two-way self-locking mechanism (1) is connected to a fixed cylinder (17), an elastic member (15) is attached to the inner wall of the fixed cylinder (17), elbows are arranged at both ends of the elastic member (15), and the elastic member (15) rotates or locks along the inner wall of the fixed cylinder (17); A driving shaft (14), wherein a first end of the driving shaft (14) is rotatably connected to the outside of the two-way self-locking mechanism (1), and a second end of the driving shaft (14) is in contact with the inside of the elbow; A driven cylinder (16), wherein a first end of the driven cylinder (16) is rotatably connected to the inner wall of the two-way self-locking mechanism (1), and a second end of the driven cylinder (16) is in contact with the outside of the elbow; a bracket (19) is provided at the upper end of the two-way self-locking mechanism (1); A moving mechanism (2), wherein the moving mechanism (2) is connected to the lower part of the driven cylinder (16), and the driven cylinder (16) rotates to drive the moving mechanism (2) to move up and down; A bottom support (3); the bottom support (3) is connected to the lower part of the moving mechanism (2).

2. The tire disassembly and assembly pneumatic tool auxiliary support device according to claim 1, characterized in that: The moving mechanism (2) comprises a driving gear (22), a driven gear (23) and a movable screw rod (24); The driving gear (22) is connected to the driven cylinder (16), the driven gear (23) is meshed with the driving gear (22) at 90 degrees, and the upper end of the movable screw rod (24) is connected to the lower part of the driven gear (23).

3. The tire disassembly and assembly pneumatic tool auxiliary support device according to claim 2, characterized in that: The bottom support (3) comprises a movable screw rod joint (31), a column frame (32) and a base frame (34); The movable screw rod joint (31) is interference-connected to the upper end of the base frame (34); the lower end of the movable screw rod (24) passes through the movable screw rod joint (31) and is connected to the inside of the column frame (32); the lower end of the movable screw rod (24) is connected to the movable screw rod joint (31) via a threaded sleeve; The outer circumference of the movable screw rod (24) is provided with an external thread, and the external thread and the screw sleeve rotate in coordination to enable the movable screw rod (24) to move up and down.

4. The tire disassembly and assembly pneumatic tool auxiliary support device according to claim 3, characterized in that: A universal wheel (35) is provided at the lower end of the base frame (34).

5. The tire disassembly and assembly pneumatic tool auxiliary support device according to claim 2, characterized in that: The movable screw rod (24) is sleeved with a rolling bearing (25), and the rolling bearing (25) is located between the movable screw rod (24) and the driven gear (23).

6. The tire disassembly and assembly pneumatic tool auxiliary support device according to claim 2, characterized in that: A limiting protrusion (26) is provided on the upper part of the movable screw rod (24).

7. The tire disassembly and assembly pneumatic tool auxiliary support device according to claim 1, characterized in that: The first end of the active rotating shaft (14) connected to the outside of the two-way self-locking mechanism (1) is a rocker arm (12) and a handle (11); the rocker arm (12) is in a vertical direction, and the handle (11) is vertically connected to the upper end of the rocker arm (12).

8. The tire disassembly and assembly pneumatic tool auxiliary support device according to claim 1, characterized in that: The bracket (19) is V-shaped, and a rubber pad is pasted inside the bracket (19).

9. The tire disassembly and assembly pneumatic tool auxiliary support device according to claim 1, characterized in that: A bushing (13) is provided between the first end of the active rotating shaft (14) and the bidirectional self-locking mechanism (1).

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