Tire tightening mechanism

Abstract

The utility model discloses a tire tight supporting mechanism which comprises a bottom plate, a guide rod is arranged in the middle of the bottom plate, and a sliding piece is installed on the guide rod in a sliding mode. The sliding piece is connected with an opening piece arranged on the side face of the bottom plate through an arranged linkage rod. One end of the linkage rod is connected with the sliding piece through a shaft pin, the other side of the linkage rod is connected with the opening piece through a shaft pin, and the linkage rod slides downwards along the guide rod through the sliding piece so as to promote the opening piece to open. In conclusion, after the bottom plate is installed on the inner ring of the tire, the sliding piece is used for promoting the expanding piece to abut against the inner diameter of the tire, and the tire is expanded through the expanding piece along with continuous downward movement of the sliding piece; the tire can be stably and reliably positioned on the bottom plate; on the basis, the tire is expanded through the bottom plate, so that the position of the tire is stable and reliable when the tire is cut into strips, particularly, the outer diameter of the bottom plate can be adjusted through the cooperation of sliding of the sliding part and the opening part, and therefore tires with different diameters can be fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of tire strip cutting equipment, in particular to a tire tightening mechanism. Background Art

[0002] Based on the tire stripping equipment, for example, the prior art with patent number CN215241143U, when the tire is stripped, the inner ring of the tire is firstly put on the wheel hub barrel, and then the wheel hub barrel is used to support the inner ring of the tire to avoid deformation of the tire during the stripping process.

[0003] Although the above method can support and fix the inner ring of the tire, there are huge differences in the diameter of the inner ring of the tire; for example, the diameter of the inner ring of the tire of a passenger car is very different from the diameter of the inner ring of the tire of a large truck. Therefore, when cutting the tire, either the tires of the same specification are placed on one side of the hub tube manually in advance; or the hub tubes of different diameters are replaced in real time according to the changes between the inner rings of the tires.

[0004] Therefore, it is not difficult to see that the above method not only has the problem of low efficiency in cutting, but also has the problem of wasting time and manpower and material resources. In addition, it is easy to injure workers when replacing the wheel hub drum. Utility Model Content

[0005] The purpose of the utility model is to provide a tire tightening mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tire tightening mechanism, including a tightening member, the tightening member including a base plate, a guide rod is provided in the middle of the base plate, and a sliding member is slidably installed on the guide rod; the sliding member is connected to the opening member provided on the side of the base plate through a linkage rod; one end of the linkage rod is connected to the sliding member axle pin, and the other side of the linkage rod is connected to the opening member axle pin; the sliding member slides downward along the guide rod to cause the opening member to expand, and the sliding member slides upward along the guide rod to cause the opening member to shrink to the edge of the base plate to complete the expansion of the tightening member or the contraction of the tightening member.

[0007] As a preferred technical solution of the utility model: the support member includes a first plate body and a second plate body connected to the first plate body with an axis pin; wherein one end of the first plate body is connected to the base plate axis pin, and the second plate body is connected to the linkage rod axis pin.

[0008] As a preferred technical solution of the utility model: an axle pin is also provided on the bottom plate; wherein one end of the first plate body is sleeved on the axle pin, and the axle pin is movably connected to the bottom plate.

[0009] As a preferred technical solution of the utility model: the side of the shaft pin rod away from the bottom plate is movably connected to a cover plate, and an inspection hole is provided in the middle of the cover plate.

[0010] As a preferred technical solution of the utility model: a hole cover is also provided on the cover plate, and the inspection hole is covered by the hole cover.

[0011] As a preferred technical solution of the utility model: the bottom surface of the bottom plate is rotatably connected to a first bearing, and the upper end of the sliding member is also provided with a second bearing.

[0012] As a preferred technical solution of the utility model: through holes are provided in the middle of the guide rod and the sliding member.

[0013] As a preferred technical solution of the present invention: a mounting plate is further provided below the second bearing; wherein the base plate is mounted on the outer ring of the second bearing, and the mounting plate is connected to the inner ring of the second bearing.

[0014] As a preferred technical solution of the utility model: the cross section of the guide rod is polygonal, and the linkage rod includes a rod body part, and both ends of the rod body part are provided with joint bearing connecting rods.

[0015] As a preferred technical solution of the present utility model: the number of the linkage rods is equal to the number of the propping members, and the number of the propping members is at least four.

[0016] By adopting the above technical scheme, the beneficial effects of the utility model are as follows: after the base plate is installed on the inner ring of the tire, the sliding member is used to cause the expansion member to press against the inner diameter of the tire, and as the sliding member continues to move downward, the tire is expanded by the expansion member; the tire is enabled to be stably and reliably located on the base plate; the support and fixation of the inner ring of the tire are completed; based on this, the base plate is used to expand the tire, so that the position of the tire is stable and reliable when cutting strips, especially, the sliding of the sliding member and the expansion member cooperate with each other to adjust the outer diameter of the base plate, so tires of different diameters can be fixed, thereby effectively solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the exploded structure of the utility model when the main structure is closed;

[0018] Figure 2 This is a schematic diagram of the main structure of the utility model when the cover plate is hidden and the expansion member is expanded;

[0019] Figure 3 It is a top view schematic diagram of the expansion member in the expanded state after the cover plate of the utility model is hidden;

[0020] Figure 4 It is a schematic diagram of the exploded structure of the main structure of the utility model when it is expanded;

[0021] Figure 5 This is a schematic diagram of the exploded structure of the expansion member of the utility model;

[0022] Figure 6 This is a schematic diagram of the main structure of the linkage rod of the utility model;

[0023] Figure 7 This is a schematic diagram of the normal state.

[0024] In the figure: 1. mounting plate; 2. first bearing; 3. expansion member; 30. bottom plate; 31. linkage rod; 32. expansion member; 33. sliding member; 34. guide rod; 35. axle pin rod; 36. first plate body; 37. second plate body; 38. through hole; 39. rod body part; 310. spherical bearing connecting rod; 311. retaining member; 4. cover plate; 5. hole cover; 6. second bearing; 7. inspection hole. DETAILED DESCRIPTION

[0025] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0026] See also Figure 1-6 The utility model provides an embodiment of a tire tightening mechanism, comprising a tightening member 3, wherein the tightening member 3 comprises a base plate 30, a guide rod 34 is provided in the middle of the base plate 30, and a sliding member 33 is slidably installed on the guide rod 34; the sliding member 33 is connected to the opening member 32 provided on the side of the base plate 30 through a linkage rod 31; one end of the linkage rod 31 is connected to the sliding member 33 with an axle pin, and the other side of the linkage rod 31 is connected to the opening member 32 with an axle pin; the sliding member 33 slides downward along the guide rod 34 to cause the opening member 32 to expand, and the sliding member 33 slides upward along the guide rod 34 to cause the opening member 32 to shrink to the edge of the base plate 30, so as to complete the expansion of the tightening member 3 or the contraction of the tightening member 3.

[0027] In summary, by moving the sliding member 33 downward, the expansion member 32 can be pushed outward along the bottom plate 30; conversely, by moving the sliding member 33 upward, the expansion member 32 can be pulled toward the edge of the bottom plate 30, so that the expansion member 3 can expand inner rings of different diameters, thereby improving the adaptability of the device. Based on this, the expansion member is used to adapt to tires of different diameters, so that when the tires are cut into strips, there is no need to screen the tires in advance; secondly, the expansion member 3 does not need to be replaced, so as to improve the efficiency of cutting and the safety at the same time, that is, while improving the efficiency of cutting, it can also solve the problem of workers being injured when the wheel hub barrel is replaced in the prior art; thirdly, it solves the problem of workshop space occupied by a large number of wheel hub barrels in the prior art;

[0028] Furthermore, since the expansion member 32 includes a first plate 36 and a second plate 37 connected to the first plate 36 by an axial pin; wherein one end of the first plate 36 is connected to the bottom plate 30 by an axial pin, and the second plate 37 is connected to the linkage rod 31 by an axial pin. Therefore, the expansion member 32 can be smoothly unfolded and closed while being stable in position after expansion; in addition, a stopper 311 is also provided on the second plate 37, so when the tire is pushed into the expansion member 3 and contacts the stopper 311, the tire can be prevented from falling to the inner side of the expansion member 3 due to excessive pushing, wherein the stopper 311 is in the shape of a plate.

[0029] At the same time, since the bottom plate 30 is also provided with an axle pin 35, wherein one end of the first plate body 36 is sleeved on the axle pin 35, and the axle pin 35 is movably connected to the bottom plate 30, thus, while ensuring the smooth unfolding and closing of the propping member 32, the assembly of the bottom plate 30 and the axle pin 35 is simple and convenient, and in particular, the axle pin 35 and the bottom plate 30 can be independently produced and processed to reduce the processing cost of the device.

[0030] Furthermore, since the side of the axle pin rod 35 away from the base plate 30 is movably connected to the cover plate 4, the cover plate 4 is utilized to prevent impurities from entering the interior of the expansion member 3. At the same time, an inspection hole 7 is provided in the middle of the cover plate 4. Therefore, it is convenient for the user to inspect and maintain the interior of the expansion member 3 without disassembling the cover plate 4.

[0031] In addition, a hole cover 5 is provided on the cover plate 4, and the inspection hole 7 is covered by the hole cover 5. Therefore, it is possible to prevent impurities from entering the interior of the expansion member 3 through the inspection hole 7.

[0032] On the basis of the above scheme, since the guide rod 34 and the middle part of the sliding member 33 are both provided with a through hole 38, it is convenient for the working part of the driving member to pass through the guide rod 34 and then connect with the sliding member 33; for example, when the driving member is a cylinder, the cylinder rod of the cylinder passes through the through hole 38 of the guide rod 34 and then passes through the through hole 38 of the sliding member 33 and is connected with the nut, so that the cylinder rod can be fixed to the sliding member 33, and then the cylinder rod can drive the sliding member 33 to move. Based on this, the sliding of the sliding member 33 can be automatically controlled.

[0033] Furthermore, since the bottom surface of the base plate 30 is rotatably connected to the first bearing 2, and the upper end of the sliding member 33 is also provided with a second bearing 6, when the driving member is used to cause the sliding member 33 to slide up and down, the tensioning member 3 can also rotate along the central axis of the driving member to ensure that the tensioning member 3 does not affect the rotation of the tire while tightening the tire, so as to ensure the continuity of the tire strip cutting operation.

[0034] In addition, since a mounting plate 1 is provided below the second bearing 6, wherein the bottom plate 30 is mounted on the outer ring of the second bearing 6, and the mounting plate 1 is connected to the inner ring of the second bearing 6, the expansion member 3 can rotate freely on the mounting plate 1, and the mounting plate 1 can also be used to connect with the strip cutter, for example, the mounting plate 1 is welded to the frame of the strip cutter, so that the expansion member 3 is easily assembled with the strip cutter.

[0035] In order to ensure the directional sliding of the sliding member 33, the cross-section of the guide rod 34 is a polygon. Therefore, the guide rod 34 can be used to prevent the sliding member 33 from axially rotating on the guide rod 34, which would cause the problem that the expansion member 32 is difficult to expand or close smoothly. Specifically, the cross-section of the guide rod 34 is a hexagon, and the interior of the sliding member 33 is provided with a hexagonal hole that matches the hexagon.

[0036] Further, the linkage rod 31 includes a rod body portion 39, and both ends of the rod body portion 39 are provided with joint bearing connecting rods 310. Therefore, the joint bearing connecting rods 310 can be used to ensure that the sliding member 33 slides up and down on the guide rod 34 smoothly and steadily.

[0037] In addition, since the number of the linkage rods 31 is equal to the number of the stretching members 32, and the number of the stretching members 32 is at least four, when the tensioning member 3 is installed on the inner ring of the tire, the inner ring of the tire can be supported from at least four points to avoid deformation of the tire when the tensioning member 3 is working; specifically, the number of the stretching members 32 is preferably five.

[0038] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A tire tightening mechanism, comprising an expansion member (3), characterized in that: The expansion member (3) comprises a bottom plate (30), a guide rod (34) is provided in the middle of the bottom plate (30), and a sliding member (33) is slidably mounted on the guide rod (34); The sliding member (33) is connected to a support member (32) provided on the side of the bottom plate (30) via a linkage rod (31); One end of the linkage rod (31) is connected to the axis pin of the sliding member (33), and the other side of the linkage rod (31) is connected to the axis pin of the expansion member (32); The sliding member (33) slides downward along the guide rod (34) to cause the expansion member (32) to expand, and the sliding member (33) slides upward along the guide rod (34) to cause the expansion member (32) to shrink to the edge of the base plate (30), so as to complete the expansion of the expansion member (3) or the contraction of the expansion member (3).

2. A tire tightening mechanism according to claim 1, characterized in that: The support member (32) comprises a first plate body (36) and a second plate body (37) axially pin-connected to the first plate body (36); wherein one end of the first plate body (36) is axially pin-connected to the base plate (30), and the second plate body (37) is axially pin-connected to the linkage rod (31).

3. A tire tightening mechanism according to claim 2, characterized in that: The bottom plate (30) is also provided with an axle pin rod (35); wherein one end of the first plate body (36) is sleeved on the axle pin rod (35), and the axle pin rod (35) is movably connected to the bottom plate (30).

4. A tire tightening mechanism according to claim 3, characterized in that: The side of the shaft pin rod (35) away from the bottom plate (30) is movably connected to a cover plate (4), and a maintenance hole (7) is provided in the middle of the cover plate (4).

5. A tire tightening mechanism according to claim 4, characterized in that: The cover plate (4) is also provided with a hole cover (5), and the inspection hole (7) is covered by the hole cover (5).

6. A tire tightening mechanism according to any one of claims 1 to 5, characterized in that: The bottom surface of the bottom plate (30) is rotatably connected to a first bearing (2), and the upper end of the sliding member (33) is also provided with a second bearing (6).

7. A tire tightening mechanism according to claim 6, characterized in that: The guide rod (34) and the sliding member (33) are both provided with through holes (38) in the middle.

8. A tire tightening mechanism according to claim 7, characterized in that: A mounting plate (1) is also provided below the second bearing (6); wherein the base plate (30) is mounted on the outer ring of the second bearing (6), and the mounting plate (1) is connected to the inner ring of the second bearing (6).

9. A tire tightening mechanism according to claim 8, characterized in that: The cross section of the guide rod (34) is polygonal, and the linkage rod (31) comprises a rod body portion (39), and both ends of the rod body portion (39) are provided with joint bearing connecting rods (310).

10. A tire tightening mechanism according to claim 9, characterized in that: The number of the linkage rods (31) is equal to the number of the expansion members (32), and the number of the expansion members (32) is at least four.

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