Chain push-out mechanism of wheel fixing device

Abstract

The utility model provides a chain push-out mechanism of a wheel fixing device, and belongs to the technical field of logistics equipment. The binding device solves the problems that an existing binding device is inconvenient to operate and low in efficiency. The wheel fixing device comprises a base and a chain which is arranged below the base, one end of the chain is an extending end, the chain comprises chain plates, abutting parts which abut against each other when the chain is in a straight state so that the chain can only be bent towards one side are arranged between the adjacent chain plates, the push-out mechanism comprises a driving part, and a guide plate is vertically and slidably connected into the base. The guide plate is close to the extending end of the chain and located on the side, with the bending tendency, of the chain, the extending end of the chain is provided with a clamping piece, the clamping piece is laterally clamped to the guide plate under the action of elastic force, and when the extending end of the chain extends out of the base upwards, the guide plate can be driven by the clamping piece to synchronously extend out of the base upwards. The chain push-out mechanism of the wheel fixing device has the advantage that binding operation is more convenient and faster.

Description

Technical Field

[0001] The utility model belongs to the technical field of logistics equipment and relates to a chain pushing mechanism of a wheel fixing device. Background Art

[0002] After a passenger car leaves the factory, it needs to be transported to a sales point by a transport vehicle. When the passenger car is parked on the transport vehicle for transportation, a wheel binding device is required to fix the wheels of the passenger car to ensure the stability of the passenger car during transportation. Or when the passenger car breaks down and needs to be towed, a binding device is also required to fix it on the transport vehicle. For example, a tire bracket rail vehicle disclosed in a patent document (application number: 201720397635.9) is provided with a tire binding device, including a tire strap, a ratchet wheel and a pawl. The ratchet wheel is rotatably connected inside the bracket housing. There is a hexagonal shaft on the ratchet wheel for manual operation. The pawl is hinged inside the bracket housing and can engage with the ratchet wheel. One end of the tire strap is wound around the ratchet wheel, and the other end is connected to the pawl through a pull ring. When in use, the automobile tire is placed in the tire strap, and the hexagonal shaft of the ratchet wheel is rotated counterclockwise using an internal hexagonal socket, driving the tire strap to wind around the ratchet wheel. The pull ring of the tire strap pulls the ratchet pawl to rotate counterclockwise around the fixed shaft of the ratchet wheel, so that the claw of the ratchet pawl catches the ratchet wheel and cannot rotate clockwise, completing the binding of the wheel.

[0003] However, in order to facilitate manual operation, the binding strap of this tire binding device is usually made of nylon material. This kind of binding strap has a certain ductility. Due to the large weight of the passenger car, even if the wheel is tightened by the binding strap, under the action of the huge inertia of the passenger car and the ductility of the binding strap itself, the passenger car will still shake to a certain extent, and the reliability is not high. Moreover, the actual use is not the tire as shown in the attached Figure 1 drawing of this patent specification, but a vehicle. The gap between the tire tread and the vehicle body is small. When binding, it is necessary to hold the tire strap by hand and insert it into the gap between the tire tread and the vehicle body, and at the same time adjust the position of the tire strap and the wheel under the condition that it is not easy to see. Especially when this binding device is installed at the edge of the loading board of the transport vehicle, it is difficult to stand people on the loading board of the transport vehicle. There are also guard plates or guardrails installed on both sides of the edge of the loading board of some transport vehicles. The position of the gap between the tire tread of the passenger car on the transport vehicle and the vehicle body is relatively high, which is not easy to operate. The above factors all result in inconvenient binding operation of the binding device and low efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to address the above problems existing in the prior art and propose a chain pushing mechanism of a wheel fixing device. The chain pushing mechanism of the wheel fixing device makes the binding operation more convenient and fast on the premise of ensuring reliable wheel fixing.

[0005] The object of the present utility model can be achieved by the following technical solutions: A chain pushing mechanism of a wheel fixing device, the wheel fixing device includes a base and a chain disposed below the base with one end being an extending end, the chain includes a plurality of chain plates arranged in sequence and hinged to each other, and is characterized in that there are abutting portions between adjacent chain plates that abut against each other when the chain is in a straight state, such that the chain can only be bent to one side. The pushing mechanism includes a driving member capable of pushing the extending end of the chain upward out of the base. A guide plate is slidably connected vertically inside the base, the guide plate is close to the extending end of the chain and is located on the side where the chain has a tendency to bend. A clamping member is provided at the extending end of the chain, and the clamping member is laterally clamped on the guide plate under the action of elastic force, and when the extending end of the chain extends upward out of the base, the guide plate can be driven to extend upward out of the base synchronously through the clamping member.

[0006] The base can be part of the vehicle body of the transport vehicle or can be independent and installed on the transport vehicle. Usually, two bases are used in pairs, that is, the two bases are respectively installed on both sides of the transport vehicle in the width direction. Before use, the extended end of the chain and the guide plate are retracted into the base to facilitate the loading of the passenger vehicle. When in use, the passenger vehicle drives onto the transport vehicle and the wheels press on the base. At this time, the extended end of the chain and the guide plate are located in front of or behind the wheels. The driving member pushes the extended end of the chain upward out of the base. The extended end of the chain is connected to the guide plate through a clamping member and can drive the guide plate to move upward synchronously. The height at which the guide plate extends out of the base is approximately the radius length of the wheel, that is, the top of the guide plate is approximately abutted against the front part of the wheel surface when the guide plate extends upward. Since the guide plate is connected to the base and is restricted and difficult to move further, and the clamping member on the chain is clamped to the guide plate under the action of elastic force, when the extended end of the chain continues to extend, the clamping member can overcome the elastic force and disengage from the guide plate, and the extended end of the chain continues to extend and winds circumferentially along the wheel surface. In this application, a chain is used for bundling. Compared with a bundling belt, the chain will not stretch. After being tightened, the rigid structure and relatively large structural strength of the chain itself can prevent the passenger vehicle from shaking and ensure the reliability of fixing the passenger vehicle. At the same time, since the chain needs to be wound around the wheel surface, the chain needs to be bent to one side. However, there is an angle between the wheel surface and the upper side of the base. The chain that can be bent cannot immediately lean against the wheel surface when it is just pushed out of the base by the driving member and will directly bend and fall at this angle, resulting in the chain being unable to wind around the wheel. Therefore, this application adopts the design of the abutting portion on the chain so that the chain can only be bent to one side. At the same time, combined with the guide plate being located on the side where the chain has a tendency to bend, when the guide plate and the extended end of the chain extend synchronously, the extended end of the chain can lean on the guide plate until the extended end of the chain leans on the wheel surface and the guide plate falls by itself, that is, the guide plate provides support and guidance for the upward extension of the extended end of the chain until the extended end of the chain leans on the wheel surface, realizing the automatic pushing and bundling of the chain and making the bundling operation more convenient and fast. The extended end of the chain uses a clamping member to drive the guide plate to move, which not only ensures the synchronism of the two but also enables the guide plate to not require an independent drive source, simplifies the structure, and reduces the cost.

[0007] In the chain pushing mechanism of the above-mentioned wheel fixing device, the guide plate is bent into a straight tube shape and arranged vertically. The extending end of the chain passes upward through the inner side of the guide plate, and the two vertical edge portions of the guide plate are located on the side where the chain has a tendency to bend. The guide plate bent into a straight tube shape is slidably inserted into the base, with higher connection stability. Although the chain can only bend to one side, passing it through the tubular guide plate can also make the chain more stable, and the position accuracy of the extending end of the chain is higher. The two vertical edge portions of the guide plate are located on the side where the chain has a tendency to bend. When extending out of the base together with the extending end of the chain, the extending end of the chain can lean on the inner side surfaces of the two vertical edge portions of the guide plate.

[0008] In the chain pushing mechanism of the above-mentioned wheel fixing device, a connecting pipe is connected to the end of the extending end of the chain. The connecting pipe is arranged along the width direction of the chain. The clamping member includes a positioning ball and a positioning spring arranged in the connecting pipe. A positioning hole is formed in the inner side wall at the upper end of the guide plate. When the extending end of the chain is located inside the guide plate, the positioning ball in the connecting pipe abuts against the positioning hole in the guide plate under the action of the positioning spring. The positioning ball protrudes horizontally from the pipe orifice of the connecting pipe under the elastic force of the positioning spring and abuts against the positioning hole in the guide plate, realizing the connection between the extending end of the chain and the guide plate. When the extending end of the chain extends upward out of the base, the positioning ball can push upward against the hole wall of the positioning hole, causing the guide plate to extend upward synchronously. When the guide plate extends in place, the upper part of the hole wall of the positioning hole pushes against the positioning ball, and the positioning ball compresses the positioning spring and disengages from the positioning hole. The extending end of the chain continues to extend upward and moves along the wheel surface, and the guide plate descends under its own gravity and retracts into the base. Similarly, when the chain releases the tire under the action of the driving member and retracts into the base, the positioning ball can be inserted into the positioning hole again.

[0009] As another structure, the clamping member can also adopt an L-shaped clamping plate. The upper end of the clamping plate is hinged to the side part of the extending end of the chain, and the plate surface of the clamping plate fits with the side surface of the extending end of the chain. The lower end of the clamping plate is substantially horizontal. A torsion spring is provided at the hinge point at the lower end of the clamping plate. A columnar convex portion is provided on the inner side wall of the guide plate. Under the action of the torsion spring, the lower end of the clamping plate can be hooked upward on the convex portion. When the extending end of the chain extends upward, the clamping plate can push upward against the convex portion, causing the guide plate to extend upward out of the base. When the guide plate is in place, the clamping plate swings against the elastic force of the torsion spring and disengages from the convex portion, and the extending end of the chain is separated from the guide plate. An inclined surface is provided at the lower edge of the lower end of the clamping plate. When the chain retracts into the base, the clamping plate presses against the convex portion through the lower edge, and thus swings under the action of the inclined surface and hooks on the convex portion again.

[0010] In the chain pushing mechanism of the above-mentioned wheel fixing device, there are at least two guiding plates, both of which are bent into straight cylindrical shapes. The guiding plates are sleeved with each other and can slide relatively. The positioning holes are located on the innermost guiding plate. The outermost guiding plate is slidably connected to the base in the vertical direction. A linkage is also provided between two adjacent guiding plates, which can drive the outer guiding plate to slide upward when the inner guiding plate extends upward. The two guiding plates adopt the structural design of a telescopic sleeve, that is, when retracted into the base, the two straight cylindrical guiding plates are sleeved with each other, so as to reduce the requirement for the vertical space of the base, make the overall structure compact, and enable this wheel fixing device to be applicable to more transport vehicles, improving the applicability. When the inner guiding plate extends upward, it can drive the outer guiding part to extend upward through the linkage, so that the actual supporting length of the chain after extension is approximately the sum of the lengths of the two guiding plates.

[0011] In the chain pushing mechanism of the above-mentioned wheel fixing device, the linkage includes a linkage convex part on the inner side wall of the outer guiding plate, and the linkage convex part is located at the upper end of the guiding plate. A long strip-shaped linkage groove is formed along the length direction on the side wall of the inner guiding plate, and the linkage convex part is embedded in the linkage groove. The two ends of the linkage groove are respectively close to the two ends of the guiding plate. When the two guiding plates are located in the base, the linkage convex part is located at the upper part of the linkage groove. When the inner guiding plate extends upward until the linkage convex part abuts against the lower groove wall of the linkage groove, it can drive the outer guiding plate to extend upward, and try to increase the length of both of them after extension. Of course, the linkage can also adopt the structure of an elastic sheet. For example, an elastic sheet is fixed at the bottom of the outer side wall of the inner guiding plate, and the elastic sheet abuts against the inner side wall of the outer guiding plate. A positioning groove is formed on the inner side wall at the upper end of the inner guiding plate. When the inner guiding plate extends upward until the elastic sheet abuts against the positioning groove, it can drive the outer guiding plate to extend upward. As a structure where one guiding plate drives another guiding plate to extend after extension, the lower edge of the inner guiding plate can also have a flanging protruding outward, and the upper edge of the outer guiding plate can have a flanging protruding inward. When the inner guiding plate extends upward, the two flangings can hook, so as to drive the outer guiding plate to extend upward.

[0012] In the chain pushing mechanism of the wheel fixing device, a guide tube is connected to the base, the guide tube is arranged vertically, the outermost guide plate is slidably inserted in the guide tube, the inner side wall of the upper end of the guide tube has a protruding limit column, and the upper side wall of the outermost guide plate is vertically provided with a long limit groove, and the limit column is embedded in the limit groove. The guide plate is slidably inserted in the guide tube, so that the structure of the guide plate is more stable, and when the guide plate is extended upward to the right position, the limit column can abut against the groove wall at the lower end of the limit groove, thereby limiting the guide plate from further extending, and at this time, the positioning ball at the extended end of the chain can be separated from the positioning hole and continue to extend upward, so as to realize the separation of the chain and the guide plate, and the guide plate can fall under the action of its own gravity. The above structure does not require manual or other power sources, which improves the convenience of operation while reducing costs.

[0013] In the chain pushing mechanism of the wheel fixing device, a strip gap is formed between the two vertical edges of the guide plate, a clearance gap is vertically opened on the upper side wall of the guide tube, and mounting plates are fixed on both sides of the clearance gap of the guide tube, and the driving member includes a sprocket rotatably connected between the two mounting plates and a driving motor driving the sprocket to rotate, and the chain is a roller chain, and the sprocket is meshed with the chain after passing through the clearance gap and the strip gap. The roller chain can mesh with the sprocket to realize transmission, and the driving motor and the sprocket are both installed on the guide tube. The driving motor drives the sprocket to rotate through the transmission, and the sprocket meshes with the chain, which can drive the chain to extend upward from the base. The driving member can also use two rubber wheels clamped against each other, and the two rubber wheels are respectively arranged on the lateral sides of the chain, and the two rubber wheels are clamped against each other on the outer sides of the chain, which can also realize the top pushing of the chain.

[0014] In the chain pushing mechanism of the wheel fixing device mentioned above, the chain also includes a plurality of strip side plates, the lateral edges of the chain plates are bent toward the same side to form a connecting flange, the two ends of the strip side plates are respectively hinged to the two adjacent connecting flanges through a pin shaft, the abutting portion is the end portion at both ends of the chain plate, and the pin shaft is also sleeved with two pressure wheels, and the wheel surfaces of the pressure wheels are protruding from the edge of the connecting flange to one side. Based on the structure of the existing roller chain, an integral chain plate is provided, the lateral edges of the chain plates are bent to form a connecting flange, and the corners of the two ends of the connecting flange are chamfered. When the chain is in a straight state, the ends of the two adjacent chain plates, that is, the abutting portions, abut against each other, and the chain is difficult to bend toward one side of the chain plate, and can only bend toward the side where the connecting flange protrudes. Therefore, only a guide plate needs to be provided on one side to simplify the structure.

[0015] In the chain pushing mechanism of the above-mentioned wheel fixing device, the base includes a panel. A positioning groove is formed by downward depression on the panel. Through holes are provided on both the front and rear sides of the positioning groove on the panel. Connecting plates are vertically fixed on both the lateral sides of one of the through holes on the lower side of the panel. The guide tube is slidably connected between the two connecting plates in the front-rear direction. An adjusting motor is fixed on one of the connecting plates. A gear is fixed on the motor shaft of the adjusting motor. A rack is fixed on the outer side wall of the guide tube in the front-rear direction. The gear meshes with the rack. The positioning groove is arc-shaped and recessed, and is used for positioning the wheels of a passenger vehicle. The guide plate, the sprocket, and the driving motor are all integrated on the guide tube. The guide tube is slidably connected to the connecting plates of the base in the front-rear direction. The adjusting motor can drive the guide tube to move in the front-rear direction through the cooperation of the gear and the rack, so as to adjust the front-rear position of the chain extending end, and thus be applicable to wheels of different diameters, improving the applicability.

[0016] A chain pushing mechanism of a wheel fixing device. The wheel fixing device includes a base and a chain provided below the base with one end being the extending end. The chain includes a plurality of chain plates arranged in sequence and hinged to each other. It is characterized in that there is an abutting portion between adjacent chain plates, which abuts against each other when the chain is in a straight state, so that the chain can only bend to one side. The pushing mechanism includes a driving member that can push the extending end of the chain upward out of the base. A guide plate is slidably connected vertically in the base. The guide plate is close to the extending end of the chain and is located on the side where the chain has a bending tendency. A clamping member is provided at the upper end of the guide plate. The clamping member is laterally clamped on the extending end of the chain under the action of elastic force, and when the extending end of the chain extends upward out of the base, the guide plate can be driven to synchronously extend upward out of the base through the clamping member.

[0017] The chain pushing mechanism of this wheel fixing device is basically the same as the first structure. The difference lies in the position of the clamping member. The clamping member is arranged on the guide plate and is clamped on the extending end of the chain under the action of elastic force. When the extending end of the chain extends upward out of the base, the guide plate can also be driven to extend upward out of the base through the clamping member. The clamping member also includes a positioning ball and a positioning spring. A positioning hole is opened on the side surface of the extending end of the chain. A sleeve is fixed horizontally on the outer side wall of the guide plate. The pipe orifice of the sleeve penetrates the inner side surface of the guide plate. Therefore, the positioning ball arranged in the sleeve can abut against the positioning hole of the chain under the action of the positioning spring.

[0018] Compared with the prior art, the chain pushing mechanism of this wheel fixing device has the following advantages:

[0019] 1. Since the present application uses a chain for bundling, the chain will not stretch. After being tightened, the rigid structure and relatively large structural strength of the chain itself can prevent the passenger vehicle from shaking, ensuring the reliability of fixing the passenger vehicle.

[0020] 2. Since the guide plate can extend synchronously when the extended end of the chain extends out of the base, the extended end of the chain can lean on the guide plate until the guide plate falls by itself when the extended end of the chain leans on the wheel surface. The guide plate provides support and guidance for the upward extension of the extended end of the chain, realizing the automatic pushing and bundling of the chain, making the bundling operation more convenient and fast.

[0021] 3. Since the extended end of the chain uses a clamping part to drive the movement of the guide plate, it not only ensures the synchronism of the two, but also makes the guide plate not require an independent drive source, simplifies the structure, and reduces the cost.

[0022] 4. Due to the structural design of the telescopic sleeves of the two guide plates, when retracted into the base, the two straight cylindrical guide plates are sleeved with each other to reduce the requirement for the vertical space of the base, making the overall structure compact and enabling this wheel fixing device to be applicable to more transport vehicles, improving the applicability.

[0023] 5. Since the ends of two adjacent link plates, that is, the abutting parts, abut against each other when the chain is in a straight state, it is difficult for the chain to bend towards the side of the link plate and can only bend towards the side where the connecting flanges protrude. Therefore, only one guide plate needs to be set on one side, simplifying the structure.

[0024] 6. Since the guide plate, the sprocket, and the driving motor are all integrated on the guide tube, the guide tube is slidably connected to the connecting plate of the base in the front-back direction. The adjusting motor can drive the guide tube to move in the front-back direction through the cooperation of the gear and the rack, thereby adjusting the front-back position of the extended end of the chain, and further being applicable to wheels of different diameters, improving the applicability. Description of the Drawings

[0025] Figure 1 is a three-dimensional structural schematic diagram of the wheel fixing device.

[0026] Figure 2 is a partial structural schematic diagram of the chain.

[0027] Figure 3 is a partial structural schematic diagram of the chain from another perspective.

[0028] Figure 4 is a top view of the structure of the wheel fixing device.

[0029] Figure 5 is Figure 4 a structural cross-sectional view at A-A in

[0030] Figure 6 is Figure 5 a magnified structural view at B in

[0031] Figure 7 is Figure 4 a magnified structural view at C in

[0032] Figure 8 It is a three-dimensional structural schematic diagram when the guide plate of the wheel fixing device extends out.

[0033] Figure 9 It is a partial three-dimensional structural schematic diagram of the chain pushing mechanism.

[0034] Figure 10 It is Figure 4 The partial structural sectional view at D-D in

[0035] Figure 11 It is Figure 10 The enlarged view of the structure at E in

[0036] Figure 12 It is Figure 8 The enlarged view of the structure at F in

[0037] Figure 13 It is the structural sectional view when the guide plate of the wheel fixing device extends out.

[0038] Figure 14 It is Figure 13 The enlarged view of the structure at G in

[0039] Figure 15 It is Figure 13 The enlarged view of the structure at H in

[0040] Figure 16 It is Figure 10 The partial structural sectional view at I-I in

[0041] Figure 17 It is the usage state diagram when the wheel fixing device binds the wheel.

[0042] In the figure, 1 is the base; 11 is the panel; 111 is the positioning groove; 112 is the through hole; 12 is the track; 13 is the connecting plate; 131 is the sliding groove; 132 is the mounting hole; 2 is the chain; 21 is the chain plate; 211 is the connecting flange; 212 is the abutting part; 22 is the strip-shaped side plate; 23 is the pin shaft; 24 is the pressing wheel; 25 is the connecting pipe; 251 is the limiting ring; 3 is the guide plate; 31 is the strip-shaped notch; 32 is the positioning hole; 33 is the linkage convex part; 34 is the linkage groove; 35 is the limiting groove; 4 is the driving part; 41 is the driving motor; 42 is the transmission; 43 is the sprocket; 5 is the clamping part; 51 is the positioning ball; 52 is the positioning spring; 6 is the guide pipe; 61 is the relief notch; 62 is the mounting plate; 63 is the limiting column; 64 is the slide bar; 65 is the rack; 7 is the adjusting motor; 71 is the gear. Specific embodiments

[0043] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0044] Embodiment 1:

[0045] As Figure 1 shown, a chain pushing mechanism of a wheel fixing device, the wheel fixing device includes a base 1, the base 1 includes a panel 11 and a track 12 fixed on the lower side of the panel 11. The middle of the panel 11 is recessed downward to form an arc-shaped positioning groove 111, and through holes 112 are provided on both the front and rear sides of the panel 11 in the positioning groove 111. A chain 2 is laid in the track 12. One end of the chain 2 is an extending end, and the extending end is located below one of the through holes 112 of the panel 11. Combined Figure 17 shown, the extending end of the chain 2 can extend upward from one through hole 112, bypass the wheel surface, and then extend into the other through hole 112 to realize the bundling of the wheel. Specifically, combined Figure 2 、 Figure 3 shown, the chain 2 is a roller chain, including a number of chain plates 21 arranged in sequence. The lateral edges on both sides of the chain plate 21 are bent toward the same side to form connecting flanges 211, and the two ends of the connecting flanges 211 are chamfered. The chain 2 also includes a number of strip-shaped side plates 22. The two ends of the strip-shaped side plates 22 are respectively hinged to adjacent connecting flanges 211 through pins 23, that is, the chain plate 21 is located on one side of the pin 23. The adjacent ends of two adjacent chain plates 21 are abutting parts 212, and when the chain 2 is in a straight state, the adjacent abutting parts 212 of the two chain plates 21 abut against each other, making it difficult for the chain 2 to bend toward the side where the chain plate 21 is located, and it can only bend toward the side where the pin 23 is located. Combined Figures 4 to 8 shown, a guide tube 6 is also connected in the base 1. The guide tube 6 is vertically arranged, and the upper end opening of the guide tube 6 is opposite to the through hole 112 of the panel 11. The lower end of the guide tube 6 is docked with one end of the track 12. Two guide plates 3 are slidably connected in the guide tube 6 along the vertical direction. The guide plates 3 are both bent into straight tube shapes and vertically arranged. The two straight tube-shaped guide plates 3 are sleeved with each other and can slide relative to each other, that is, the outer guide plate 3 slides vertically and is inserted into the guide tube 6, and the inner guide plate 3 slides vertically and is inserted into the outer guide plate 3. The extending end of the chain 2 passes through the inner guide plate 3 upward. The two vertical edges of the guide plate 3 are partially located on the side where the chain 2 has a bending tendency, that is, on the side where the pin 23 is located. A driving member 4 capable of pushing the extending end of the chain 2 upward from the through hole 112 of the panel 11 is also provided on the guide tube 6. A clamping member 5 is provided at the extending end of the chain 2. The clamping member 5 is laterally clamped on the guide plate 3 under the action of elastic force, and when the extending end of the chain 2 extends upward out of the base 1, the guide plate 3 can be driven to extend upward out of the base 1 synchronously through the clamping member 5. A linkage member is also provided between two adjacent guide plates 3, which can drive the outer guide plate 3 to slide upward when the inner guide plate 3 extends upward.

[0046] Combined Figure 9As shown, the driving member 4 includes a driving motor 41 and a sprocket 43. A strip-shaped notch 31 is formed between the two vertical edges of the guide plate 3. A relief notch 61 is vertically formed on the side wall of the guide tube 6. When the guide plate 3 is located inside the guide tube 6, the strip-shaped notch 31 is opposite to the relief notch 61. Mounting plates 62 are fixed on both sides of the guide tube 6 at the relief notch 61. The two mounting plates 62 are vertically opposite to each other. The sprocket 43 is rotatably connected between the two mounting plates 62. Two pressure wheels 24 are also sleeved on the pin shaft 23 of the chain 2. The two pressure wheels 24 are respectively located at both ends of the pin shaft 23, so that there is a gap between the two pressure wheels 24. The sprocket 43 passes through the relief notch 61 and the strip-shaped notch 31 and meshes with the part of the pin shaft 23 located between the two pressure wheels 24. The wheel surfaces of the pressure wheels 24 protrude towards one side from the edge of the connecting flange 211, so that the pressure wheels 24 can press against the wheel surface of the wheel when bundling the wheel, that is, when the chain 2 extends, the pressure wheels 24 can roll along the wheel surface of the wheel, reducing the frictional resistance. When bundling, the pressure wheels 24 are pressed against the wheel surface of the wheel, reducing the damage to the wheel surface. The driving motor 41 is fixed on the side of the guide tube 6. A transmission 42 is also fixed on the outer side surface of the mounting plate 62. The driving motor 41 is drivingly connected to the sprocket 43 through the transmission 42. Referring to Figure 10 , Figure 11 As shown, a connecting pipe 25 is connected to the end of the extending end of the chain 2. The connecting pipe 25 is arranged along the width direction of the chain 2. The clamping member 5 includes two positioning balls 51 and a positioning spring 52 arranged in the connecting pipe 25. The two positioning balls 51 are respectively located at the two end ports of the connecting pipe 25. Limit rings 251 are also threadedly connected to both ends of the connecting pipe 25. The inner diameter of the limit ring 251 is smaller than the outer diameter of the positioning ball 51. The two ends of the positioning spring 52 respectively act on the two positioning balls 51, so that the two positioning balls 51 respectively abut against the two limit rings 251, and the positioning balls 51 protrude from the port of the connecting pipe 25. Positioning holes 32 are formed on the two opposite inner side walls of the upper end of the inner guide plate 3. When the extending end of the chain 2 is located inside the guide plate 3, the two positioning balls 51 in the connecting pipe 25 respectively abut against the two positioning holes 32 of the guide plate 3 under the action of the positioning spring 52, realizing the connection between the extending end of the chain 2 and the guide plate 3. When the extending end of the chain 2 extends upward out of the base 1, the positioning ball 51 can push up the hole wall of the positioning hole 32, so that the guide plate 3 extends upward synchronously. When the guide plate 3 extends in place, the positioning ball 51 compresses the positioning spring 52 and disengages from the positioning hole 32, and the guide plate 3 descends under its own gravity.

[0047] Referring to Figures 12 to 15As shown, the linkage member includes a linkage protrusion 33 located on the inner side wall of the outer guide plate 3, the linkage protrusion 33 is columnar and located at the upper end of the guide plate 3, and a long strip linkage groove 34 is opened on the inner side wall of the guide plate 3 along the length direction, and the two ends of the linkage groove 34 are respectively close to the two ends of the guide plate 3, and the linkage protrusion 33 is embedded in the linkage groove 34. A protruding limiting column 63 is provided on the inner side wall of the upper end of the guide tube 6, and a long strip limiting groove 35 is vertically opened on the side wall of the outermost guide plate 3, and the two ends of the limiting groove 35 are respectively close to the two ends of the guide plate 3, and the limiting column 63 is embedded in the limiting groove 35. When the two guide plates 3 are located in the base 1, the linkage protrusion 33 is located at the upper part of the linkage groove 34, and the limiting column 63 is located at the upper part of the limiting groove 35. When the inner guide plate 3 extends upward until the linkage protrusion 33 abuts against the lower end groove wall of the linkage groove 34, it can drive the outer guide plate 3 to extend upward. When the outer guide plate 3 extends upward until the limiting column 63 abuts against the lower end groove wall of the limiting groove 35, it is limited and the guide plate 3 cannot continue to extend upward. When the chain 2 continues to move upward, the positioning ball 51 can be separated from the positioning hole 32 of the positioning plate, and the positioning plate can fall down by itself. Figure 16 As shown, connecting plates 13 are vertically fixed on both lateral sides of the through hole 112 on the front side of the lower side of the panel 11, and sliding grooves 131 are opened on the opposite sides of the two connecting plates 13 along the front-to-back direction. A sliding bar 64 is fixed on one side of the guide tube 6, and a rack 65 is fixed on the other side. The sliding bar 64 and the rack 65 are respectively slidably connected in the two sliding grooves 131. A mounting hole 132 is opened on a mounting plate 62, and the mounting hole 132 is connected to the sliding groove 131. An adjusting motor 7 is also fixed on the mounting plate 62. The motor shaft of the adjusting motor 7 extends into the mounting hole 132 and is fixed with a gear 71, and the gear 71 is meshed with the rack 65.

[0048] Embodiment 2:

[0049] The structure of the chain pushing mechanism of the wheel fixing device is basically the same as that of the first embodiment, except that the clamping member 5 is arranged on the guide plate 3, and the clamping member 5 is laterally clamped on the protruding end of the chain 2 under the action of elastic force, and when the protruding end of the chain 2 extends upward from the base 1, the clamping member 5 can drive the guide plate 3 to extend upward from the base 1 synchronously. Specifically, a sleeve is fixed along the lateral direction on the side wall of the guide plate 3, and a positioning hole 32 is opened on the connecting flange 211 of the protruding end of the chain 2, and a positioning ball 51 and a positioning spring 52 are arranged in the sleeve, and the positioning ball 51 is clamped in the positioning hole 32 of the chain 2 under the action of the positioning spring 52.

[0050] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0051] Although terms such as base 1, panel 11, positioning groove 111, etc. are used more frequently in this text, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A chain pushing mechanism of a wheel fixing device, the wheel fixing device comprising a base (1) and a chain (2) disposed below the base (1) and having an extending end at one end, the chain (2) comprising a plurality of chain plates (21) arranged in sequence and hinged, characterized in that, There are abutting portions (212) between adjacent link plates (21) that abut against each other when the chain (2) is in a straight state, such that the chain (2) can only bend to one side. The pushing mechanism includes a driving member (4) that can push the extended end of the chain (2) upward out of the base (1). A guide plate (3) is slidably connected vertically inside the base (1). The guide plate (3) is close to the extended end of the chain (2) and is located on the side where the chain (2) has a tendency to bend. A clamping member (5) is provided at the extended end of the chain (2). The clamping member (5) is laterally clamped on the guide plate (3) under the action of elastic force, and when the extended end of the chain (2) extends upward out of the base (1), the guide plate (3) can be driven to synchronously extend upward out of the base (1) through the clamping member (5).

2. The chain pushing mechanism of the wheel fixing device according to claim 1, characterized in that, The guide plate (3) is bent into a straight tubular shape and is vertically arranged. The extended end of the chain (2) passes upward through the inside of the guide plate (3). Two vertical edges of the guide plate (3) are partially located on the side where the chain (2) has a tendency to bend.

3. The chain pushing mechanism of the wheel fixing device according to claim 2, characterized in that, A connecting pipe (25) is connected to the end of the extended end of the chain (2). The connecting pipe (25) is arranged along the width direction of the chain (2). The clamping member (5) includes a positioning ball (51) and a positioning spring (52) provided inside the connecting pipe (25). A positioning hole (32) is opened on the inner side wall at the upper end of the guide plate (3). When the extended end of the chain (2) is located inside the guide plate (3), the positioning ball (51) inside the connecting pipe (25) abuts against the positioning hole (32) of the guide plate (3) under the action of the positioning spring (52).

4. The chain pushing mechanism of the wheel fixing device according to claim 3, characterized in that, There are at least two guide plates (3), and they are all bent into straight tubular shapes. The guide plates (3) are sleeved with each other and can slide relative to each other. The positioning hole (32) is located on the innermost guide plate (3). The outermost guide plate (3) is slidably connected vertically to the base (1). A linkage member is also provided between adjacent guide plates (3) that can drive the outermost guide plate (3) to slide upward when the inner guide plate (3) extends upward.

5. The chain pushing mechanism of the wheel fixing device according to claim 4, characterized in that, The linkage member includes a linkage convex portion (33) on the inner side wall of the outermost guide plate (3), and the linkage convex portion (33) is located at the upper end of the guide plate (3). A long strip-shaped linkage groove (34) is opened along the length direction on the side wall of the inner guide plate (3). The linkage convex portion (33) is embedded in the linkage groove (34).

6. The chain pushing mechanism of the wheel fixing device according to claim 5, characterized in that A guide pipe (6) is connected inside the base (1). The guide pipe (6) is vertically arranged. The outermost guide plate (3) is slidably inserted vertically into the guide pipe (6). A protruding limit post (63) is provided on the inner side wall at the upper end of the guide pipe (6). A long strip-shaped limit groove (35) is opened vertically on the side wall of the outermost guide plate (3). The limit post (63) is embedded in the limit groove (35).

7. The chain pushing mechanism of the wheel fixing device according to claim 6, characterized in that, A strip-shaped notch (31) is formed between the two vertical edges of the guide plate (3). A relief notch (61) is vertically formed on the side wall of the guide tube (6), and mounting plates (62) are fixed on both sides of the relief notch (61) of the guide tube (6). The driving member (4) includes a sprocket (43) rotatably connected between the two mounting plates (62) and a driving motor (41) for driving the sprocket (43) to rotate. The chain (2) is a roller chain, and the sprocket (43) passes through the relief notch (61) and the strip-shaped notch (31) and then meshes with the chain (2).

8. The chain pushing mechanism of the wheel fixing device according to any one of claims 1 to 7, characterized in that, The chain (2) further includes a plurality of strip-shaped side plates (22). The lateral two edges of the chain plate (21) are bent towards the same side to form connecting flanges (211). The two ends of the strip-shaped side plate (22) are respectively hinged to the adjacent two connecting flanges (211) through a pin shaft (23). The abutting portion (212) is the end portions of both ends of the chain plate (21). Two pressing wheels (24) are also sleeved on the pin shaft (23), and the wheel surfaces of the pressing wheels (24) protrude from the edges of the connecting flanges (211) towards one side.

9. The chain ejection mechanism of the wheel fixing device according to claim 6 or 7, characterized in that The base (1) includes a panel (11). A positioning groove (111) is formed by downward depression on the panel (11). Through holes (112) are formed on the front and rear sides of the panel (11) in the positioning groove (111). Connecting plates (13) are vertically fixed on the lateral two sides of the lower side surface of the panel (11) in one of the through holes (112). The guide tube (6) is slidably connected in the front-rear direction between the two connecting plates (13). An adjusting motor (7) is fixed on one of the connecting plates (13). A gear (71) is fixed on the motor shaft of the adjusting motor (7). A rack (65) is fixed on the outer side wall of the guide tube (6) in the front-rear direction. The gear (71) meshes with the rack (65).

10. A chain pushing mechanism for a wheel fixing device, the wheel fixing device comprising a base (1) and a chain (2) disposed below the base (1) and having an extending end at one end, the chain (2) comprising a plurality of chain plates (21) arranged in sequence and hinged, characterized in that, There is an abutting portion (212) between adjacent chain plates (21) which abuts against each other when the chain (2) is in a straight state so that the chain (2) can only be bent towards one side. The pushing mechanism includes a driving member (4) capable of pushing the extending end of the chain (2) upward out of the base (1). A guide plate (3) is slidably connected vertically in the base (1). The guide plate (3) is close to the extending end of the chain (2) and is located on the side where the chain (2) has a tendency to bend. A clamping member (5) is provided at the upper end of the guide plate (3). The clamping member (5) is laterally clamped to the extending end of the chain (2) under the action of an elastic force, and when the extending end of the chain (2) extends upward out of the base (1), the guide plate (3) can be driven to synchronously extend upward out of the base (1) through the clamping member (5).

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