Safe rubber tire

Abstract

The invention relates to the technical field of tires, in particular to a safety type rubber tire which comprises a hub, a mounting groove is formed in the hub, and a solid tire is mounted in the mounting groove of the hub; the hub comprises a plurality of arc-shaped plates and a center cylinder, the mounting grooves are formed in the arc-shaped plates respectively, and the arc-shaped plates are all arranged on the center cylinder; the hub is provided with a locking device, the locking device is used for fixing the arc-shaped plates to the center cylinder, the center cylinder is fixedly provided with a plurality of first positioning rods, each arc-shaped plate is fixedly provided with a second positioning rod, and the second positioning rods are used for abutting against the first positioning rods; the end, not fixedly connected with the center cylinder, of the first positioning rod is provided with a protruding part with the trapezoidal cross section. The invention aims to prevent the solid tire from being extruded into the mounting groove in the hub in the modes of prying, extruding, pressing and the like, so that the solid tire and the hub are prevented from being damaged in the mounting process.

Description

Technical Field

[0001] The invention relates to the technical field of tires, in particular to a safety rubber tire. Background Art

[0002] A solid tire is a tire that does not require inflation. Its tire body is made of a solid rubber ring. Therefore, even if the tire is damaged by a sharp object, it will not affect the normal use of the tire. Its service life is generally longer than that of a pneumatic tire, and its safety performance is generally excellent. Therefore, it is widely used in low-speed vehicles such as bicycles and electric bicycles.

[0003] The existing solid tires are generally in the form shown in the patent number: CN105564164B, and the patent name is: A self-heating solid tire. In this type of solid tire, the connection between the wheel hub and the tire carcass is mostly achieved by direct sleeve installation, and it is fixed to the wheel hub with the help of the elastic force of the carcass. However, the carcass of the solid tire is solid, so it is difficult for the carcass to deform. Therefore, in the process of sleeve the tire carcass on the wheel hub, it is necessary to use tools and apply sufficient force to pry, squeeze, press, etc. to gradually squeeze the tire carcass into the installation groove on the wheel hub. The operation is cumbersome and difficult. At the same time, in the process of prying, squeezing, and pressing the tire carcass, damage may also be caused to the tire carcass and the wheel hub, causing unnecessary reduction in the service life of the tire.

[0004] Therefore, a safety rubber tire is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a safety rubber tire, which can avoid squeezing a solid tire into a mounting groove on a wheel hub by prying, squeezing, pressing, etc., thereby avoiding damage to the solid tire and the wheel hub.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A safety rubber tire comprises a wheel hub, wherein a mounting groove is arranged on the wheel hub, and a solid tire is installed in the mounting groove of the wheel hub; the wheel hub comprises a plurality of arc plates and a central tube, wherein the mounting groove is arranged on each arc plate respectively, and the plurality of arc plates are arranged on the central tube; a locking device is arranged on the wheel hub, and the locking device is used to fix the arc plate to the central tube.

[0008] Based on this scheme, in the present invention, the solid tire needs to be installed in the installation groove, and the installation groove provides a limit for the solid tire, and then uses the elastic force of the solid tire to fix itself in the installation groove, thereby achieving fixed installation between the solid tire and the wheel hub.

[0009] When removing the solid tire from the wheel hub, the locking device can be released first, and the multiple arc plates on the wheel hub can be removed from the center tube, so that the mounting grooves are removed one by one, and the mounting grooves no longer have the effect of limiting and fixing the solid tire. Therefore, the solid tire can be easily removed directly from the wheel hub without being blocked by the mounting grooves.

[0010] When installing the solid tire on the wheel hub, similarly, first remove each curved plate in sequence, then place each curved plate in sequence on the inner side of the solid tire, and place the inner side of the solid tire in the mounting grooves on each curved plate. Then, use a locking device to fix all the curved plates to the central tube, so that the central tube and each curved plate, and the mounting grooves on each curved plate have a stable and mutually fixed position relationship, so that the mounting groove can achieve a stable limiting effect on the solid tire, thereby completing the installation of the solid tire on the wheel hub.

[0011] This design scheme can avoid squeezing the solid tire into the installation groove on the wheel hub by prying, squeezing, pressing, etc. by splitting and reassembling the arc plate, thereby avoiding damage to the solid tire and the wheel hub. At the same time, it also greatly reduces the strength and skill requirements for the operator in the process of installing the solid tire on the wheel hub, reducing the difficulty of the operation.

[0012] Preferably, a plurality of positioning rods 1 are fixedly mounted on the central tube, and a positioning rod 2 is fixedly mounted on each of the arc-shaped plates, and the positioning rod 2 is used to abut against the positioning rod 1; the positioning rod 1 has a protrusion with a trapezoidal cross-section on the end that is not fixedly connected to the central tube, and the positioning rod 2 has a recessed portion for abutting against the protrusion on the end that is not fixedly connected to the corresponding arc-shaped plate.

[0013] Through this solution, when the solid tire is stably fixed on the wheel hub, the first positioning rod and the second positioning rod abut against each other, so that the arc plate can be firmly abutted against the inner side of the solid tire, thereby ensuring that the solid tire is stably placed in the installation groove, and at the same time ensuring that the inner side of the solid tire and the installation groove are tightly abutted against each other, thereby ensuring the solid tire is firmly installed. By setting the protruding part and the recessed part, when the solid tire is stably fixed on the wheel hub, the protruding part can be placed in the recessed part, and the protruding part and the recessed part abut against each other. At this time, the outer edge of the recessed part will limit the movement of the protruding part in the axial direction of the center tube, avoiding the problem that the arc plate cannot be firmly abutted against the inner side of the solid tire due to the misalignment of the first positioning rod and the second positioning rod along the axial direction of the center tube during the use of the tire, so as to improve the stability of the overall structure of the wheel hub in the installed state.

[0014] When installing the solid tire into the installation groove or removing the solid tire from the installation groove, the positioning rod 1 and the positioning rod 2 can be misaligned along the circumferential direction of the center tube by rotating the center tube, so that the abutment state between all the positioning rods 1 and all the positioning rods 2 can be conveniently switched. When the center tube is rotated so that all the positioning rods 1 and their corresponding positioning rods 2 are misaligned along the circumferential direction of the center tube, the arc plate can be removed from the inner side of the solid tire to achieve the removal of the solid tire from the wheel hub; conversely, when the center tube is rotated so that all the positioning rods 1 and their corresponding positioning rods 2 are abutted, the inner side of the solid tire and the installation groove can be tightly abutted, thereby ensuring the solid tire is firmly installed in the installation groove, and then the locking device is used to limit the mutual displacement of the positioning rods 1 and the positioning rods 2 in the circumferential direction of the center tube, so that the installation of the solid tire can be completed.

[0015] Preferably, a guide portion is fixedly mounted on the side wall surface of the positioning rod 1, the top surface of the guide portion is connected to the top surface of the protruding portion, and there is a smooth transition between the guide portion and the protruding portion.

[0016] By setting the guide part, when the central tube is rotated in the hope of causing the positioning rod one and the positioning rod two to abut against each other, the guide part will enter the recessed part before the protruding part, so that in the subsequent rotation process of the central tube, the protruding part on the positioning rod one is guided to enter the recessed part, thereby making the cooperation between the recessed part and the protruding part smoother and reducing the operating difficulty for the operator.

[0017] In addition, the guide portion has a bend toward the center tube, which means that in the radial direction of the center tube, the distance X between the end of the guide portion that is not connected to the protrusion and the axis of the center tube can be less than the distance Y between the protrusion and the axis of the center tube, that is, X<Y. Therefore, when installing the arc plate, the recessed portion of the positioning rod 2 can be pre-installed on the guide portion. At this time, the positioning rod 1 will not squeeze the positioning rod 2, so the installation groove on the arc plate will not be pushed out and block the placement of the solid tire. At the same time, when all the positioning rods 2 are installed on the guide portion, the center tube can be rotated to synchronously complete the abutment and matching operation of all the positioning rods 1 and all the positioning rods 2 by using the guidance of the guide portion, without the need to adjust the possible matching interference one by one, which simplifies the operation steps of the present invention and further reduces the operating difficulty of the operator.

[0018] Preferably, the locking device includes a limiting groove provided at the bottom end of the recessed portion, and a positioning hole is provided on the side wall surface of the end of the positioning rod that is not fixedly connected to its corresponding arc-shaped plate, and the positioning hole is a through hole, and the positioning hole is connected to the limiting groove; a fixing portion is fixedly installed on the protruding portion, and the fixing portion is arranged in the limiting groove, and a through limiting hole is provided on the fixing portion, and the limiting hole and the positioning hole are coaxially arranged; a fixing bolt is commonly passed through the limiting hole and the positioning hole, and a fixing nut is fixedly installed on the fixing bolt.

[0019] In addition, two washers are sleeved on the fixing bolt, and the two washers are clamped between the nut of the fixing bolt and the second positioning rod, and between the fixing nut and the second positioning rod respectively; the washers are against the first positioning rod.

[0020] Through this solution, when the protrusion and the recess are abutted against each other by rotating the center tube, the fixing part will also be screwed into the limiting groove synchronously, and at the same time, the axis of the positioning hole and the limiting hole are aligned, which can help ensure that the protrusion and the corresponding recess are abutted against each other on the entire curved surface, thereby facilitating the improvement of the extrusion stress distribution on the abutting curved surface when the protrusion and the recess are abutting against each other, thereby increasing the service life of the component. When the axis of the positioning hole and the limiting hole are aligned, the fixing bolt is inserted into the positioning hole and the limiting hole and the threaded end thereof extends out of the positioning hole, and then the fixing nut is screwed into the fixing bolt and tightened, so that the mutual displacement of the positioning rod 1 and the positioning rod 2 in the circumferential direction of the center tube can be limited, thereby completing the installation of the solid tire.

[0021] When the positioning rod 1 and the positioning rod 2 try to shake relative to each other through the washer, the washer can prevent the relative lateral misalignment and shaking between the positioning rod 1 and the positioning rod 2 because the washer resists against the positioning rod 1 and the positioning rod 2 at the same time, thereby ensuring the reliability and stability of the connection between the positioning rod 1 and the positioning rod 2.

[0022] Preferably, a plurality of spokes are symmetrically arranged on the center tube, and a clamping block is detachably arranged on the end of each spoke not connected to the center tube, and a docking slope 1 is symmetrically provided on the clamping block; docking slope 2 is provided at both ends of the arc plate, and the docking slope 2 is used to abut against the docking slope 1; the side wall of the protruding portion abuts against the side wall of the recessed portion.

[0023] For the convenience of description, the combined component composed of the positioning rod 1 and the corresponding positioning rod 2, which is used to support the corresponding arc plate, is called a support rod. In the present invention, since there are multiple arc plates, each arc plate will give a reaction force to the solid tire according to the size of the elastic force used as a preload when the solid tire is sleeved on the wheel hub, and the size of the elastic force is related to the deformation of the solid tire. Under ideal conditions, the design of the present invention expects that the deformation mode and deformation amount of the parts where the solid tire and each arc plate are squeezed are the same. However, in actual production, since there are certain tolerances in the positioning rod 1, the positioning rod 2, the center tube, etc., the lengths of the support rods will be different. Therefore, it is difficult to achieve consistency in the deformation amount and degree of squeezing of the parts where the solid tire and each arc plate are squeezed, which will result in multiple parts on the solid tire with uneven force. A longer support rod will cause more outward compression on the solid tire, so that the solid tire cannot maintain a standard round shape, but is deformed into an elliptical shape, which ultimately causes the vehicle using the tire to experience bumps during driving.

[0024] For this purpose, the present invention provides a clamping block and a spoke. When the solid tire is firmly mounted on the wheel hub, the clamping block will be placed between two adjacent arc-shaped plates, and the two butting bevels 1 on the clamping block will respectively abut against the two butting bevels 1 on the two arc-shaped plates. At this time, the positioning rod 1 abuts against the positioning rod 2, and the extrusion force between the positioning rod 1 and the positioning rod 2 will act on the clamping block and be converted into a tensile force acting on the spoke. Therefore, the extrusion force between the positioning rod 1 and the positioning rod 2 will become the internal force of the entire wheel hub, and will not be applied to the solid tire outward.

[0025] At the same time, under the limitation of the block and the cooperation of the protrusion and the recess, for the overlong support rod, on the one hand, the arc plate will not protrude outward under the limitation of the block, and since the lengths of the positioning rod 1 and the positioning rod 2 remain unchanged, this will increase the squeezing force between the positioning rod 1 and the positioning rod 2; on the other hand, since the squeezing force between the positioning rod 1 and the positioning rod 2 is increased, and since the side wall of the protrusion and the side wall of the recess are against each other, the two side edges of the recess will open outward, so that the protrusion can protrude further into the recess, thereby shortening the length of the support rod, so that the arc plate can maintain an arc-shaped outer contour, which helps to keep the wheel hub in a standard circular shape. As a result, the solid tire can maintain its standard circular shape, which helps to prevent the vehicle using the tire of the present invention from bumping during driving.

[0026] Preferably, the spoke includes a connecting portion and a docking portion; thread one and thread two are respectively provided at both ends of the docking portion, and a threaded hole for screwing thread one is provided on the clamping block; thread three is provided at one end of the connecting portion, and the other end of the connecting portion is fixedly mounted on the center tube; a connecting tube is jointly sleeved on the connecting portion and the docking portion, and thread four is provided in the connecting tube, and thread four cooperates with thread two and thread three, and thread two and thread three have the same rotation direction.

[0027] Since the clamp block and the arc plate need to maintain a fixed position relationship with each other, the spoke connected to the clamp block also needs to maintain a fixed position relationship with the arc plate. However, the other end of the spoke is arranged on the central tube, and the central tube needs to rotate relative to the arc plate, which may cause interference of components during the installation process of the present invention. For this reason, this solution is provided.

[0028] When the positioning rod 1 and the positioning rod 2 are not connected to each other, the connecting part and the docking part are separated, so that the block and the center tube can also rotate relative to each other, so that the spokes will not interfere with the rotation operation of the center tube, and the operation of rotating the center tube to connect the positioning rod 1 and the positioning rod 2 is not interfered by movement. When the center tube is rotated to make the positioning rod 1 and the positioning rod 2 abut against each other, the docking part and the connecting part can be fixedly connected by the connecting tube to form a complete spoke, so that the spoke can realize the function described above. In addition, since the thread rotation direction of the second thread is the same as that of the third thread, when the connecting tube is unscrewed from the second thread, it will also be able to be screwed into the third thread at the same time, thereby simplifying the operation.

[0029] Preferably, the rotation directions of thread one and thread two are opposite.

[0030] With this arrangement, when the tire of the present invention vibrates during use and attempts to loosen the first thread, since the first thread and the second thread have opposite rotation directions, when the first thread attempts to be screwed out of its corresponding threaded hole, the second thread will also attempt to be screwed out of the connecting tube due to the connection of the docking portion. At this time, the movement trends of the two ends of the docking portion are opposite, thus canceling each other out, and thus preventing the first thread from being removed from the threaded hole. In this way, the first thread can be prevented from being removed from the threaded hole, ensuring the reliability of the spoke connection.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. By setting the arc plate, the center tube and the locking device, the arc plate can be disassembled and reassembled to avoid squeezing the solid tire into the installation groove on the wheel hub by prying, squeezing, pressing, etc., thereby avoiding damage to the solid tire and the wheel hub. At the same time, it also greatly reduces the strength and skill requirements for the operator in the process of installing the solid tire on the wheel hub, reducing the difficulty of operation.

[0033] 2. By setting the block and the spokes, when the solid tire is firmly mounted on the wheel hub, the block will be placed between two adjacent arc-shaped plates. At this time, the positioning rod 1 and the positioning rod 2 are abutted against each other, and the squeezing force between the positioning rod 1 and the positioning rod 2 will act on the block and be converted into a pulling force acting on the spokes. Therefore, the squeezing force between the positioning rod 1 and the positioning rod 2 will become the internal force of the entire wheel hub, and will not be applied to the solid tire outwardly. Therefore, the solid tire will be able to maintain its standard round shape, which helps to prevent the vehicle using the tire of the present invention from bumping during driving.

[0034] 3. Through the coordination of the block, the protrusion and the recess, for an overlong support rod, on the one hand, the arc plate will not protrude outward under the restriction of the block; on the other hand, because the side wall of the protrusion abuts against the side wall of the recess, the two side edges of the recess will open outward, so that the protrusion can protrude further into the recess, thereby shortening the length of the support rod, which helps to keep the wheel hub in a standard circular shape. As a result, the solid tire can maintain its standard circular shape, which helps to prevent the vehicle using the tire of the present invention from bumping during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A;

[0037] Figure 3 for Figure 1 A front view of

[0038] Figure 4 for Figure 3 Schematic diagram of the cutaway of the BB section;

[0039] Figure 5 for Figure 3 A partial enlarged schematic diagram of part C in the middle;

[0040] Figure 6 for Figure 4 A partial enlarged schematic diagram of part D in the middle;

[0041] Figure 7 for Figure 4 A partial enlarged schematic diagram of part E in the middle;

[0042] Figure 8 for Figure 7 A schematic diagram of the state when the two side edges of the concave portion are squeezed by the convex portion and open outward;

[0043] Fig. 9 for Figure 8 A partial enlarged schematic diagram of part F in the middle.

[0044] In the figure: 1. solid tire; 2. wheel hub; 3. spokes; 4. docking slope 2; 21. arc plate; 22. block; 23. positioning rod 2; 24. positioning rod 1; 25. fixing bolt; 26. washer; 27. center tube; 28. fixing nut; 31. connecting tube; 32. docking part; 33. connecting part; 41. docking slope 1; 211. threaded hole; 231. recessed part; 232. limiting groove; 233. positioning hole; 241. protruding part; 242. guiding part; 243. fixing part; 244. limiting hole; 311. thread 4; 321. thread 1; 322. thread 2; 323. thread 3. DETAILED DESCRIPTION

[0045] The following content will use the drawings listed in the aforementioned "Description of Drawings" section to clearly explain the specific implementation methods of the present invention, in the hope that readers can have a more complete and objective understanding of the working principle of the present invention and the corresponding technical effects.

[0046] like Figures 1 to 9 As shown in the figure, a specific implementation of the present invention is shown. Among them, several points need to be explained in advance: first, the main components of the hub 2 in the present invention include the arc plate 21, the center tube 27, the first positioning rod 24, the second positioning rod 23, the spoke 3, and the block 22; second, for the convenience of description, the combination component composed of the first positioning rod 24 and the corresponding second positioning rod 23 for supporting the corresponding arc plate 21 is called a support rod.

[0047] When the present invention is installed, first, take out the wheel hub 2, which is provided with a mounting groove, and a solid tire 1 is installed in the mounting groove of the wheel hub 2; the wheel hub 2 includes a plurality of arc plates 21 and a central tube 27, the mounting grooves are respectively provided on each arc plate 21, and the plurality of arc plates 21 are all provided on the central tube 27; a locking device is provided on the wheel hub 2, and the locking device is used to fix the arc plates 21 to the central tube 27. A plurality of positioning rods 1 24 are fixedly installed on the central tube 27, and a positioning rod 2 23 is fixedly installed on each arc plate 21, and the positioning rod 2 23 is used to abut against the positioning rod 1 24; the positioning rod 1 24 has a protrusion 241 with a trapezoidal cross section on one end that is not fixedly connected to the central tube 27, and the positioning rod 2 23 has a recessed portion 231 for abutting against the protrusion 241 on one end that is not fixedly connected to the corresponding arc plate 21.

[0048] Among them, the locking device includes a limiting groove 232 opened at the bottom end of the recessed portion 231, and a positioning hole 233 is opened on the side wall surface of the end of the positioning rod 23 that is not fixedly connected to its corresponding arc plate 21. The positioning hole 233 is a through hole, and the positioning hole 233 is connected with the limiting groove 232; a fixing portion 243 is fixedly installed on the protruding portion 241, and the fixing portion 243 is arranged in the limiting groove 232. A through limiting hole 244 is opened on the fixing portion 243, and the limiting hole 244 is coaxially arranged with the positioning hole 233; a fixing bolt 25 is passed through the limiting hole 244 and the positioning hole 233, and a fixing nut 28 is fixedly installed on the fixing bolt 25.

[0049] In addition, a plurality of spokes 3 are symmetrically arranged on the center tube 27, and a block 22 is detachably arranged on the end of each spoke 3 that is not connected to the center tube 27, and a docking slope 1 41 is symmetrically provided on the block 22; docking slope 2 4 is provided at both ends of the arc plate 21, and the docking slope 2 4 is used to abut against the docking slope 1 41; the side wall of the protrusion 241 abuts against the side wall of the recessed portion 231.

[0050] The spoke 3 includes a connecting portion 33 and a docking portion 32; the two ends of the docking portion 32 are respectively provided with a thread 1 321 and a thread 2 322, and the block 22 is provided with a threaded hole 211 for screwing into the thread 1 321; a thread 3 323 is provided at one end of the connecting portion 33, and the other end of the connecting portion 33 is fixedly mounted on the center tube 27; the connecting portion 33 and the docking portion 32 are jointly sleeved with a connecting tube 31, and a thread 4 311 is provided in the connecting tube 31, and the thread 4 311 cooperates with the thread 2 322 and the thread 3 323, and the thread 2 322 and the thread 3 323 have the same rotation direction. A guide portion 242 is fixedly mounted on the side wall surface of the positioning rod 1 24, and the top surface of the guide portion 242 is connected to the top surface of the protruding portion 241, and the guide portion 242 and the protruding portion 241 have a smooth transition. The rotation direction of the thread 1 321 is opposite to that of the thread 2 322. Two washers 26 are sleeved on the fixing bolt 25 , and the two washers 26 are clamped between the nut of the fixing bolt 25 and the second positioning rod 23 , and between the fixing nut 28 and the second positioning rod 23 ; the washers 26 abut against the first positioning rod 24 .

[0051] The specific working mode of the present invention is as follows:

[0052] When removing the solid tire 1 from the wheel hub 2, the fixing nut 28 can be removed from the fixing bolt 25 first, and the fixing bolt 25 can be taken out from the positioning hole 233. Then, the connecting cylinder 31 is rotated to separate the thread 4 311 and the thread 2 322. Then, the center cylinder 27 is rotated to separate the positioning rod 1 24 and the positioning rod 2 23 that originally abutted against each other, and the center cylinder 27 is pulled out. Then, the block 22 and the plurality of arc plates 21 can be removed from the solid tire 1 respectively, so that the mounting grooves are removed in sequence. In this way, the wheel hub 2 and the solid tire 1 are separated. Otherwise, the wheel hub 2 can be reassembled onto the solid tire 1.

[0053] Through this design, the present invention utilizes the method of splitting and reassembling the arc plate 21 to avoid squeezing the solid tire 1 into the installation groove on the wheel hub 2 by prying, squeezing, pressing, etc., thereby avoiding damage to the solid tire 1 and the wheel hub 2, and at the same time greatly reduces the strength and skill requirements for the operator in the process of installing the solid tire 1 to the wheel hub 2, thereby reducing the difficulty of the operation.

[0054] In addition, by providing the guide portion 242, when the center tube 27 is rotated in the hope of causing the positioning rod 1 24 and the positioning rod 2 23 to abut against each other, the guide portion 242 will enter the recessed portion 231 before the protruding portion 241, thereby guiding the protruding portion 241 on the positioning rod 1 24 to enter the recessed portion 231 during the subsequent rotation of the center tube 27, thereby making the fit between the recessed portion 231 and the protruding portion 241 smoother, thereby reducing the difficulty of operation for the operator.

[0055] At the same time, the guide portion 242 is bent toward the center tube 27, which means that in the radial direction of the center tube 27, the distance X between the end of the guide portion 242 that is not connected to the protrusion 241 and the axis of the center tube 27 can be less than the distance Y between the protrusion 241 and the axis of the center tube 27, that is, X<Y. Therefore, when installing the arc plate 21, the recessed portion 231 of the positioning rod 23 can be pre-installed on the guide portion 242. At this time, the positioning rod 1 24 will not squeeze the positioning rod 23, so the installation groove on the arc plate 21 will not be pushed out and block the placement of the solid tire 1. At the same time, when all the positioning rods 23 are installed on the guide portion 242, the center tube 27 can be rotated to synchronously complete the abutment and matching operation of all the positioning rods 1 24 and all the positioning rods 2 23 by using the guidance of the guide portion 242, without the need to adjust the possible matching interference one by one, which simplifies the operation steps of the present invention and further reduces the operating difficulty of the operator.

[0056] It is worth adding that, in the present invention, since there are multiple arc plates 21, each arc plate 21 will give a reaction force to the solid tire 1 according to the size of the elastic force used as a preload when the solid tire 1 is sleeved on the wheel hub 2, and the size of the elastic force is related to the deformation of the solid tire 1. Ideally, the design of the present invention would expect the deformation mode and deformation amount of the parts where the solid tire 1 and each arc plate 21 are squeezed to be the same. However, in actual production, since there are certain tolerances in the positioning rod 1 24, the positioning rod 2 23, the center tube 27, etc., the lengths of the support rods will be different. Therefore, it is difficult to achieve consistency in the deformation amount and degree of squeezing of the parts where the solid tire 1 and each arc plate 21 are squeezed, which will result in multiple parts of the solid tire 1 with uneven force. The support rods with longer lengths will squeeze the solid tire 1 more outward, so that the solid tire 1 cannot maintain a standard circular shape, but is deformed into an elliptical shape, which ultimately causes the vehicle using the tire to be bumpy during driving.

[0057] For this purpose, the present invention provides a block 22 and a spoke 3. When the solid tire 1 is firmly sleeved on the wheel hub 2, the block 22 will be placed between two adjacent arc-shaped plates 21, and the two butting bevels 41 on the block 22 will respectively abut against the two butting bevels 41 on the two arc-shaped plates 21. At this time, the positioning rod 1 24 and the positioning rod 2 23 are abutted against each other, and the extrusion force between the positioning rod 1 24 and the positioning rod 2 23 will act on the block 22 and be converted into a tensile force acting on the spoke 3. Therefore, the extrusion force between the positioning rod 1 24 and the positioning rod 2 23 will become the internal force of the entire wheel hub 2, and will not be applied to the solid tire 1 outward.

[0058] At the same time, refer to Figures 7 to 9As shown, under the limit of the block 22 and the cooperation of the protrusion 241 and the recess 231, for the overlong support rod, on the one hand, the arc plate 21 will not protrude outward under the limit of the block 22, and since the lengths of the positioning rod 1 24 and the positioning rod 2 23 remain unchanged, this will increase the squeezing force between the positioning rod 1 24 and the positioning rod 2 23; on the other hand, since the squeezing force between the positioning rod 1 24 and the positioning rod 2 23 is increased, and since the side wall of the protrusion 241 is against the side wall of the recess 231, the two side edges of the recess 231 will open outward, so that the protrusion 241 can further protrude into the recess 231, thereby shortening the length of the support rod, so that the arc plate 21 can maintain the arc-shaped outer contour, thereby helping to keep the wheel hub 2 in a standard circular shape. As a result, the solid tire 1 can maintain its standard circular shape, which helps to prevent the vehicle using the tire of the present invention from bumping during driving. At this time, the edge of the recessed portion 231 will squeeze the gasket 26 and be slightly embedded therein, and the gasket 26 will be squeezed and deformed, thereby not affecting the abutting relationship between the gasket 26 and the first positioning rod 24 and the second positioning rod 23.

[0059] It should be emphasized that, based on the contents recorded in the above text, although the beneficial effects of the present invention have been elaborated in detail and corresponding specific implementation methods have been provided for this purpose, ordinary technicians in this field can still make conventional substitutions, deformations, etc. based on the given technical solutions without creative labor to achieve the same technical effects, based on the full understanding of the working principle of the present invention, but this should not be considered to exceed the scope of the present invention. Specifically, the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A safety rubber tire, comprising a wheel hub (2), wherein the wheel hub (2) is provided with a mounting groove, and a solid tire (1) is mounted in the mounting groove of the wheel hub (2); characterized in that: The wheel hub (2) comprises a plurality of arc-shaped plates (21) and a central tube (27); the mounting grooves are respectively arranged on each of the arc-shaped plates (21); and the plurality of arc-shaped plates (21) are all arranged on the central tube (27); a locking device is arranged on the wheel hub (2), and the locking device is used to fix the arc-shaped plates (21) to the central tube (27).

2. A safety rubber tire according to claim 1, characterized in that: A plurality of positioning rods (24) are fixedly mounted on the central tube (27), and a positioning rod (23) is fixedly mounted on each of the arc-shaped plates (21), and the positioning rod (23) is used to abut against the positioning rod (24); the positioning rod (24) has a protruding portion (241) with a trapezoidal cross section on one end that is not fixedly connected to the central tube (27), and a recessed portion (231) for abutting against the protruding portion (241) on one end that is not fixedly connected to the corresponding arc-shaped plate (21).

3. A safety rubber tire according to claim 2, characterized in that: The locking device comprises a limiting groove (232) provided at the bottom end of the recessed portion (231); a positioning hole (233) is provided on the side wall surface of one end of the positioning rod (23) which is not fixedly connected to the corresponding arc-shaped plate (21); the positioning hole (233) is a through hole, and the positioning hole (233) is connected with the limiting groove (232); a fixing portion (243) is fixedly installed on the protruding portion (241); the fixing portion (243) is arranged in the limiting groove (232); a through limiting hole (244) is provided on the fixing portion (243); the limiting hole (244) and the positioning hole (233) are coaxially arranged; a fixing bolt (25) is passed through the limiting hole (244) and the positioning hole (233); a fixing nut (28) is fixedly installed on the fixing bolt (25).

4. A safety rubber tire according to claim 3, characterized in that: A plurality of spokes (3) are symmetrically arranged on the central tube (27); a clamping block (22) is detachably arranged on one end of each spoke (3) that is not connected to the central tube (27); a first butt joint bevel (41) is symmetrically provided on the clamping block (22); a second butt joint bevel (4) is provided at both ends of the arc plate (21); the second butt joint bevel (4) is used to abut against the first butt joint bevel (41); and a side wall of the protruding portion (241) abuts against a side wall of the recessed portion (231).

5. A safety rubber tire according to claim 4, characterized in that: The spoke (3) comprises a connecting portion (33) and a docking portion (32); two ends of the docking portion (32) are respectively provided with a first thread (321) and a second thread (322); a threaded hole (211) for screwing the first thread (321) is provided on the block (22); a third thread (323) is provided at one end of the connecting portion (33), and the other end of the connecting portion (33) is fixedly mounted on the center tube (27); a connecting tube (31) is commonly sleeved on the connecting portion (33) and the docking portion (32); a fourth thread (311) is provided in the connecting tube (31); the fourth thread (311) cooperates with the second thread (322) and the third thread (323); the second thread (322) and the third thread (323) have the same rotation direction.

6. The safety rubber tire according to claim 3, characterized in that: A guide portion (242) is fixedly mounted on the side wall surface of the positioning rod (24); the top surface of the guide portion (242) is connected to the top surface of the protruding portion (241), and there is a smooth transition between the guide portion (242) and the protruding portion (241).

7. The safety rubber tire according to claim 5, characterized in that: The rotation direction of the first thread (321) and the second thread (322) are opposite.

8. The safety rubber tire according to claim 3, characterized in that: Two washers (26) are sleeved on the fixing bolt (25), and the two washers (26) are respectively clamped between the nut of the fixing bolt (25) and the second positioning rod (23), and between the fixing nut (28) and the second positioning rod (23); the washers (26) are against the first positioning rod (24).

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