Tire pushing device and nail embedding equipment

By designing a tire push device, using the tire push assembly and the tire push power element to apply thrust on the outside of the rim of the nailing machine, the problem of tire unloading is solved, resulting in unsmooth tire removal due to the tire snapping into the rim, and the smooth disengagement of the tire and the improvement of production efficiency are achieved.

CN222886294UActive Publication Date: 2025-05-20HIMILE CNC MASCH TOOL (SHANDONG) CO LTD
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Patent Information

Application Number
CN202421964383.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-14
Publication Date
2025-05-20
Estimated Expiration
2034-08-14

AI Technical Summary

Technical Problem

When the existing nailing machine is unloaded, the tire is prone to snap into the rim, resulting in unsmooth tire unloading and affecting production efficiency.

Method used

A tire pushing device is designed, including at least two sets of tire pushing components, which are located outside the rim and are distributed in circumference. Each set of tire pushing components includes a tire pushing power element. The driving end is separated from the tire during the staple operation. When the rim is withdrawn and reset, the driving end of the tire pushing power element is abutted on the side of the tire, and thrust is applied to separate the tire from the rim.

Benefits of technology

It realizes smooth disengagement of the tire during tire unloading, avoids tire deviation or dumping, improves the smoothness and production efficiency of tire unloading, and is suitable for tires of different specifications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a tire pushing device and nail inlaying equipment, and belongs to the technical field of tire production equipment.The tire pushing device is used for pushing away a tire from a rim of a nail inlaying machine and comprises at least two sets of tire pushing assemblies, and the tire pushing assemblies are located on the outer side of the rim and evenly distributed in the circumferential direction of the rim; each tire pushing assembly comprises a tire pushing power element. The nail inlaying equipment comprises a nail inlaying machine and the tire pushing device. The driving end of the tire pushing power element is separated from the tire during nail embedding operation; when the rim retreats and resets, the driving end of the tire pushing power element abuts against the side face of the tire and maintains the abutting state with the tire until the tire is separated from the rim; the problem that the tire is clamped on the rim and cannot be detached is solved, and the tire is stably and smoothly separated from the rim.
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Description

Technical Field

[0001] The utility model relates to the technical field of tire production equipment, in particular to a tire pushing device and a studding equipment. Background Art

[0002] When a studding machine inserts anti-slip studs, the rim located on both sides of the tire is used to position and clamp the tire. Before the operation of inserting anti-slip studs, a large amount of gas needs to be quickly filled into the tire, and then quickly inflated to a fixed pressure value; during the inserting process, the tire needs to maintain a certain air pressure, which will cause the tire to be stuck in the rim. After the operation of inserting anti-slip studs is completed, when unloading the tire, the rim retracts and resets. If the tire is stuck in the rim, the tire will hang on the rim and the tire unloading operation cannot be well completed. Summary of the Invention

[0003] Regarding the problems existing in the prior art, the utility model provides a tire pushing device and a studding equipment, which can push the tire away from the rim when the rim resets, and complete the tire unloading operation; the tire unloading is stable, and the tire does not shift or tip over.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] On the one hand, the utility model provides a tire pushing device for pushing the tire away from the rim of the studding machine; it includes at least two groups of tire pushing components, and the tire pushing components are located outside the rim and are evenly distributed in the circumferential direction of the rim;

[0006] Each group of the tire pushing components includes a tire pushing power element, and the driving end of the tire pushing power element is separated from the tire during the studding operation; when the rim retracts and resets, the driving end of the tire pushing power element abuts against the side surface of the tire and maintains the abutting state with the tire until the tire is separated from the rim.

[0007] As a preferred technical scheme, the tire pushing power element is installed on the studding machine through a bracket assembly, and the bracket assembly includes a tire pushing guide mounting bracket and a fixed bracket;

[0008] The fixed bracket is fixedly connected with the tire pushing guide mounting bracket, and the tire pushing power element is fixedly installed on the fixed bracket;

[0009] In the circumferential direction of the rim, after two adjacent tire pushing guide mounting brackets are sequentially butted and fixed, an assembly cavity is formed inside for sleeving and fixing with the connection part of the studding machine.

[0010] As a preferred technical solution, the tire pushing guiding mounting bracket includes a first support body and two docking bodies; in the circumferential direction of the rim, the two ends of the first support body are respectively fixedly connected to the two docking bodies, and adjacent two of the tire pushing guiding mounting brackets are connected through the docking bodies.

[0011] As a preferred technical solution, the tire pushing guiding mounting bracket further includes an auxiliary support body; in the axial direction of the rim, the auxiliary support body and the first support body are arranged in parallel; the auxiliary support body extends to the two docking bodies and is fixedly connected to the docking bodies.

[0012] As a preferred technical solution, the first support body has a first mating surface, and the auxiliary support body has a second mating surface, and both the first mating surface and the second mating surface are adapted to the outer shape of the connecting part of the studding machine;

[0013] And / or, the auxiliary support body is spaced from the first support body, and an installation cavity for assembling the fixing bracket is formed between the auxiliary support body and the first support body;

[0014] And / or, a second support body is further fixedly connected between the auxiliary support body and the first support body;

[0015] And / or, a protective plate is further included, and the protective plate is located between the assembly cavity and the connecting part of the studding machine.

[0016] As a preferred technical solution, the fixing bracket includes a first connecting body and a second connecting body which are fixedly connected; the first connecting body is fixedly connected to the first support body; the second connecting body is used for fixedly installing the tire pushing power element.

[0017] As a preferred technical solution, the first connecting body is adjustably connected to the first support body;

[0018] And / or, a side surface of the first connecting body facing the assembly cavity is partially concave to form an avoidance surface;

[0019] And / or, a plurality of diagonal braces are further arranged between the second connecting body and the first connecting body.

[0020] As a preferred technical solution, the tire pushing assembly further includes a contact guard plate, the contact guard plate is fixedly connected to the driving end of the tire pushing power element, and when pushing the tire, the contact guard plate directly contacts the tire;

[0021] And / or, the tire pushing power element adopts a double-acting cylinder.

[0022] On the other hand, the present utility model also provides a studding device, which includes a studding machine and also includes the above-mentioned tire pushing device.

[0023] As a preferred technical solution, the tire pushing device is installed on the rotating outer shell of the studding machine.

[0024] The beneficial effects of the present utility model are as follows:

[0025] 1. The tire pushing device has at least two sets of tire pushing components, and the tire pushing components are located on the outer side of the rim and are evenly distributed in the circumferential direction of the rim; each set of tire pushing components includes a tire pushing power element, and the driving end of the tire pushing power element is separated from the tire during the studding operation; when the rim retracts and resets, the driving end of the tire pushing power element abuts against the side surface of the tire, and during the reset movement of the rim, a thrust is applied to the side surface of the tire to separate the tire from the rim;

[0026] 2. The thrust application positions of the tire pushing device are on both sides of the tire center of gravity, the tire is evenly stressed, and the tire can be smoothly and successfully separated from the rim, solving the problem of incorrect tire removal when the tire is stuck on the rim. After the tire is separated from the rim, it will not skew or tip over. Even for small-sized tires, they can be normally conveyed, avoiding problems such as tire jamming and tire scrapping during the conveying process;

[0027] 3. The support assembly can adjust the tire pushing power element to a suitable tire pushing position according to the size of the rim, and can meet most tire specifications, thereby improving the stability and compatibility of the device;

[0028] 4. The tire pushing device can quickly knock on the side surface of the tire when inflating tires with larger size specifications or larger aspect ratios, assist the tire to quickly return to the correct position, and complete it during other operations without affecting the equipment beat, solving the problem that the tire may be clamped incorrectly for such special specification tires, and at the same time reducing product defective products and improving equipment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a top view of the overall structure of an embodiment of the tire pushing device of the present utility model;

[0030] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the tire pushing device of the present utility model;

[0031] Figure 3 It is a three-dimensional structure schematic diagram of an embodiment of the tire pushing and guiding mounting bracket in the tire pushing device of the present utility model;

[0032] Figure 4 It is a front view of an embodiment of the tire pushing and guiding mounting bracket in the tire pushing device of the present utility model;

[0033] Figure 5This is a schematic perspective view of an embodiment of the fixed bracket in the tire pushing device of the present utility model;

[0034] Figure 6 This is a front view of an embodiment of the fixed bracket in the tire pushing device of the present utility model;

[0035] Figure 7 This is a schematic perspective view of an embodiment of the contact guard plate in the tire pushing device of the present utility model;

[0036] Figure 8 This is a schematic diagram of the assembled state of the tire pushing power element and the contact guard plate in the tire pushing device of the present utility model.

[0037] In the figure:

[0038] 1 - studding machine; 11 - rim; 12 - rotating housing;

[0039] 2 - tire pushing device; 21 - tire pushing guide mounting bracket; 211 - first support body; 212 - first adjustment hole; 213 - second support body; 214 - auxiliary support body; 215 - docking body; 216 - first mating surface; 217 - second mating surface; 218 - docking hole;

[0040] 22 - fixed bracket; 221 - first connecting body; 222 - bolt hole; 223 - second connecting body; 224 - cylinder mounting hole; 225 - diagonal brace; 226 - avoidance surface;

[0041] 23 - tire pushing power element; 231 - synchronizing plate;

[0042] 24 - contact guard plate; 241 - assembly hole. Detailed implementation manners

[0043] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings.

[0044] Please refer to Figure 1 、 Figure 2, which is an embodiment of a studding device provided by the present utility model, includes a studding machine 1 and a tire pushing device 2; the tire pushing device 2 is installed on the studding machine 1 and is used to push the tire away from the rim 11 after the tire studding operation is completed. Preferably, the tire pushing device 2 is arranged on the rotating housing 12 of the studding machine 1, close to the rim 11, which can reduce the overall size of the tire pushing device 2 and thus reduce the processing and manufacturing cost. Among them, the rotating housing 12 is a component of the studding machine 1, with a rotating shaft arranged inside. One end of the rotating shaft is in transmission connection with the inside of the studding machine 1, so that the rotating shaft can not only extend and retract relative to the rotating housing 12 outside it, but also rotate around its own axis; the other end of the rotating shaft extends out of the rotating housing 12 and is fixedly connected to the rim 11; after the tire is in place, the rotating shaft extends out, driving the rim 11 to clamp and position the tire; during the studding process, the rim 11 and the rotating shaft rotate synchronously, driving the tire to rotate, and anti-skid studs are installed in the circumferential direction of the tire. The studding machine 1 is a prior art, and no improvement has been made to it in the technical solution of the present application, so the connection method between the rotating shaft and the rim 11 and the installation and transmission structure between the rotating shaft and the studding machine 1 will not be described in detail.

[0045] Please refer to Figure 1 、 Figure 2 , the tire pushing device 2 includes at least two groups of tire pushing components, and the tire pushing components are evenly distributed in the circumferential direction of the rim 11; for example, if the number of tire pushing components is two, the two tire pushing components are arranged at an interval of 180 degrees in the circumferential direction of the rim 11; in this way, the tire pushing device 2 applies thrust at different positions of the tire simultaneously, and the tire is evenly stressed, which can avoid the tire from shifting or toppling.

[0046] Each group of tire pushing components includes a tire pushing power element 23, and the tire pushing power element 23 is installed on the studding machine 1 through a bracket assembly; at least the driving end of the tire pushing power element 23 is located on the radially outer side of the rim 11. When the rim 11 retracts, the driving end of the tire pushing power element 23 can avoid the rim 11 and abut against the outer side of the tire, so as to push the tire away from the rim 11.

[0047] Please refer to Figure 7 and Figure 8 , as an embodiment of the tire pushing power element 23, the tire pushing power element 23 adopts a double-acting cylinder, its cylinder body is fixedly connected to the bracket assembly, and a synchronous plate 231 is fixed at the end of the two cylinder guide rods. The end of the cylinder guide rod is the driving end of the double-acting cylinder. When in use, the synchronous plate 231 pushes the tire. The tire pushing power element 23 can also adopt telescopic power elements such as electric telescopic rods and lead screws, but the double-acting cylinder has good stability and small installation space occupation, which is suitable for the layout in the narrow space of the studding machine 1; at the same time, the double-acting cylinder has anti-deflection performance and high precision; therefore, the double-acting cylinder is recommended for the tire pushing power element 23.

[0048] Further, a contact guard plate 24 is fixedly connected to the synchronization plate 231. When pushing the tire, the contact guard plate 24 directly contacts the tire, which can increase the contact area between the tire pushing power element 23 and the tire, improve the tire pushing effect, and will not cause damage to the local part of the tire; the contact guard plate 24 can be replaced as needed. For the convenience of replacing the contact guard plate 24, the synchronization plate 231 and the contact guard plate 24 are detachably connected; specifically, as an embodiment of the detachable connection between the synchronization plate 231 and the contact guard plate 24, the contact guard plate 24 has a plurality of assembly holes 241, and the assembly holes 241 are counterbored holes. After the contact guard plate 24 and the synchronization plate 231 are connected and fixed through bolts and other connecting parts, the working surface of the contact guard plate 24 is a plane and will not affect the tire.

[0049] The bracket assembly includes a tire pushing guide mounting bracket 21 and a fixed bracket 22; the tire pushing guide mounting bracket 21, the fixed bracket 22, and the tire pushing power element 23 correspond one by one. Among them, the tire pushing guide mounting bracket 21 is directly assembled and connected to the studding machine 1; the fixed bracket 22 connects the tire pushing power element 23 and the tire pushing guide mounting bracket 21.

[0050] Further, in the circumferential direction of the rim 11, two adjacent tire pushing guide mounting brackets 21 are butt-jointed in sequence, and an assembly cavity is formed inside. Through the local sleeving of the assembly cavity and the studding machine 1, the fixed connection between all the tire pushing guide mounting brackets 21 and the studding machine 1 is realized at the same time, and this fixing method can avoid modifying the rotating housing 12, is easy to implement, and is convenient for processing and production.

[0051] Please refer to Figure 3 and Figure 4 , as an embodiment of the tire pushing guide mounting bracket 21, it includes a first support body 211 and two docking bodies 215. In the circumferential direction of the rim 11, the first support body 211 extends a certain length, and both ends of the first support body 211 in this length direction are fixedly connected to the two docking bodies 215 respectively. The docking body 215 can be integrally formed with the first support body 211, or can be processed separately and then fixed to each other through welding, bonding, and detachable connection methods. In the circumferential direction of the rim 11, when two adjacent first support bodies 211 are butt-jointed, it is realized through the connection of the two docking bodies 215, thereby completing the connection of two adjacent tire pushing guide mounting brackets 21.

[0052] Two adjacent first support bodies 211 are preferably detachably connected; specifically, docking holes 218 are processed on the docking body 215, and the fixed connection of the two docking bodies 215 is realized through bolts, nuts, washers, etc. located in the docking holes 218, thereby completing the fixing of the two tire pushing guide mounting brackets 21.

[0053] The side of the first support body 211 facing the assembly cavity has a first mating surface 216, and the shape of the first mating surface 216 is adapted to the outer shape of the connecting part of the nailing machine 1. For example, when the connecting part of the nailing machine 1 is the rotating housing 12, since the rotating housing 12 is cylindrical and its outer side surface is a cylindrical surface, the first mating surface 216 is a concave arc surface. If the tire pushing device 2 includes two sets of tire pushing assemblies, the first mating surface 216 is preferably a semi-circular arc surface, which can be closely attached to the outer side surface of the rotating housing 12 to achieve a stable connection.

[0054] The tire pushing guide mounting bracket 21 further includes an auxiliary support body 214. In the axial direction of the rim 11, the auxiliary support body 214 and the first support body 211 are arranged side by side. At the same time, both ends of the auxiliary support body 214 extending in the circumferential direction of the rim 11 extend to two docking bodies 215 respectively and are fixedly connected to the docking bodies 215. The auxiliary support body 214 increases the axial dimension of the assembly cavity. The tire pushing guide mounting bracket 21 formed by the auxiliary support body 214, the first support body 211 and the two docking bodies 215 has a large contact area with the nailing machine 1, improving the connection stability and avoiding the axial offset of the tire pushing guide mounting bracket 21. Preferably, there are two second support bodies 213 between the auxiliary support body 214 and the first support body 211, and the two second support bodies 213 are located at the two side edges of the auxiliary support body 214 to strengthen the connection stability between the auxiliary support body 214 and the first support body 211.

[0055] The side of the auxiliary support body 214 facing the assembly cavity has a second mating surface 217, and the shape of the second mating surface 217 is also adapted to the outer shape of the connecting part of the nailing machine 1. After the two tire pushing guide mounting brackets 21 are fixed, the second mating surface 217 is closely attached to the outer side surface of the connecting part of the nailing machine 1, which can increase the contact area between the tire pushing guide mounting bracket 21 and the rotating housing 12 and improve the connection stability of the tire pushing guide mounting bracket 21.

[0056] Please refer to Figure 5 and Figure 6 , as an embodiment of the fixing bracket 22, the fixing bracket 22 includes a first connecting body 221 and a second connecting body 223 fixedly connected. The first connecting body 221 is fixedly connected to the first support body 211, and the second connecting body 223 is used for fixedly installing the tire pushing power element 23.

[0057] Preferably, the auxiliary support body 214 and the first support body 211 are arranged at intervals and are fixedly connected through the second support body 213, forming an installation cavity for the fixing bracket 22 between the auxiliary support body 214 and the first support body 211. A part of the first connecting body 221 extends into the installation cavity, and the connection structure is compact.

[0058] Further, the first connecting body 221 is adjustably connected to the first supporting body 211. Specifically, the first supporting body 211 is provided with a first adjusting hole 212, and the first adjusting hole 212 is an elongated hole; the number of the first adjusting holes 212 can be set as required. A bolt hole 222 is provided on the first connecting body 221, and the bolt located in the bolt hole 222 extends into the first adjusting hole 212 and can slide relative to the first adjusting hole 212. In this way, when it is necessary to adjust the relative position state of the first connecting body 221 and the first supporting body 211, the nut of the locking bolt can be loosened, the first connecting body 221 can be dragged to the set position, and then the bolt can be locked, realizing the adjustment of different positions of the fixing bracket 22 to meet the tire pushing positions of different specifications of tires.

[0059] The number of bolt holes 222 corresponding to the position of each first adjusting hole 212 can be multiple, and the multiple bolt holes 222 are distributed in the length direction of the first adjusting hole 212; in actual use, only some of the bolt holes 222 can be used to realize the stable connection between the first connecting body 221 and the first supporting body 211, and it is not necessary to apply all the bolt holes 222 to each connection. The multiple bolt holes 222 cooperate with the first adjusting hole 212, increasing the adjustment range between the first connecting body 221 and the first supporting body 211, so that the tire pushing device can adapt to the tire pushing requirements of more specifications of tires.

[0060] Further, a side surface of the first connecting body 221 facing the assembly cavity is partially concave to form an avoidance surface 226; the setting of the avoidance surface 226 can not only expand the adjustment range between the first connecting body 221 and the first supporting body 211; at the same time, when the first connecting body 221 and the first supporting body 211 are adjusted to the minimum outstretched dimension, the avoidance surface 226 can also be closely attached to the outer side surface of the connecting part of the studding machine 1, thereby overall improving the installation stability and reliability of the tire pushing power element 23.

[0061] A cylinder mounting hole 224 is machined on the second connecting body 223, and the tire pushing power element 23 can be detachably fixed on the second connecting body 223. Preferably, a plurality of diagonal braces 225 can be further arranged between the second connecting body 223 and the first connecting body 221 to stabilize the connection between the two.

[0062] Further, a protective plate is padded between the tire pushing guide mounting bracket 21 and the rotating housing 12 to increase the contact area, improve the fixing strength and protection.

[0063] The auxiliary supporting body 214, the first supporting body 211, the second supporting body 213, the first connecting body 221, etc. can all adopt plate parts. Of course, the structural forms of the auxiliary supporting body 214 and the first supporting body 211 can also be set according to actual needs.

[0064] When the studding equipment is in use, the tire pushing device has two functions

[0065] One is to assist in pushing the tire, and its working principle is as follows:

[0066] After the studding machine 1 finishes studding the tire and deflating the tire,

[0067] control the rotating shaft and the rim 11 to retreat a short distance to relax the tire;

[0068] Then, control the driving end of the tire-pushing power element 23 to extend and contact the guard plate 24 against the side of the tire;

[0069] Finally, control the rotating shaft clamping the tire to retreat, and the rim 11 also retreats. Due to the limitation of the contact guard plate 24 and the tire-pushing power element 23, the tire cannot retreat with the rim 11 but disengages from the rim 11, enabling the tire to fall smoothly;

[0070] The other is to align the tire, and its working principle is as follows:

[0071] The studding machine 1 clamps the tire and quickly inflates it. After the tire is filled with gas, it enters the pressure-holding process;

[0072] Then, control the tire to rotate slowly, and the tire-pushing power element 23 makes a quick telescopic movement to strike the side of the tire to ensure the tire is aligned;

[0073] After confirming that the tire is aligned, control the tire-pushing power element 23 to reset, and the studding machine 1 performs the studding operation.

[0074] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tire pushing device for pushing a tire off a rim (11) of a studding machine (1); characterized in that: It comprises at least two groups of tire pushing assemblies, wherein the tire pushing assemblies are located outside the rim (11) and are evenly distributed in the circumferential direction of the rim (11); Each set of the tire pushing components comprises a tire pushing power element (23), the driving end of which is separated from the tire during the nailing operation; when the rim (11) is retracted and reset, the driving end of the tire pushing power element (23) abuts against the side of the tire and maintains the abutment state with the tire until the tire is separated from the rim (11).

2. A tire pushing device according to claim 1, characterized in that: The tire pushing power element (23) is installed on the nail inserting machine (1) through a bracket assembly, and the bracket assembly includes a tire pushing guide mounting bracket (21) and a fixing bracket (22); The fixed bracket (22) is fixedly connected to the tire pushing guide mounting bracket (21), and the tire pushing power element (23) is fixedly mounted on the fixed bracket (22); In the circumferential direction of the rim (11), after two adjacent tire pushing guide mounting brackets (21) are sequentially butted and fixed, an assembly cavity is formed inside for being sleeved and fixed with the connecting portion of the nail inserting machine (1).

3. A tire pushing device according to claim 2, characterized in that: The tire pushing guide mounting bracket (21) comprises a first support body (211) and two docking bodies (215); in the circumferential direction of the rim (11), the two ends of the first support body (211) are respectively fixedly connected to the two docking bodies (215), and two adjacent tire pushing guide mounting brackets (21) are connected via the docking bodies (215).

4. A tire pushing device according to claim 3, characterized in that: The tire pushing guide mounting bracket (21) further comprises an auxiliary support body (214); in the axial direction of the wheel rim (11), the auxiliary support body (214) and the first support body (211) are arranged in parallel; the auxiliary support body (214) extends to the two docking bodies (215) and is fixedly connected to the docking bodies (215).

5. A tire pushing device according to claim 4, characterized in that: The first support body (211) has a first mating surface (216), and the auxiliary support body (214) has a second mating surface (217), and the first mating surface (216) and the second mating surface (217) are both adapted to the outer shape of a connection part of the nail setting machine (1); and / or, the auxiliary support body (214) and the first support body (211) are arranged at a distance, and a mounting cavity for assembling the fixing bracket (22) is formed between the auxiliary support body (214) and the first support body (211); And / or, a second support body (213) is fixedly connected between the auxiliary support body (214) and the first support body (211); And / or, it also includes a protective plate, wherein the protective plate is located between the assembly cavity and the connection portion of the nail setting machine (1).

6. A tire pushing device according to claim 3, characterized in that: The fixed bracket (22) comprises a first connecting body (221) and a second connecting body (223) which are fixedly connected; the first connecting body (221) is fixedly connected to the first supporting body (211); and the second connecting body (223) is used for fixedly installing the tire pushing power element (23).

7. A tire pushing device according to claim 6, characterized in that: The first connector (221) is adjustably connected to the first support (211); And / or, the side surface of the first connector (221) facing the assembly cavity is partially concave to form an avoidance surface (226); And / or, a plurality of diagonal braces (225) are further provided between the second connecting body (223) and the first connecting body (221).

8. A tire pushing device according to claim 1, characterized in that: The tire pushing assembly further comprises a contact guard plate (24), wherein the contact guard plate (24) is fixedly connected to the driving end of the tire pushing power element (23), and when the tire is pushed, the contact guard plate (24) directly contacts the tire; And / or, the tire pushing power element (23) adopts a double cylinder.

9. A nailing device, comprising a nailing machine (1), characterized in that: It also includes a tire pushing device as described in any one of claims 1-8.

10. The nail setting device according to claim 9, characterized in that: The tire pushing device is mounted on a rotating housing (12) of the nail inserting machine (1).