Antiskid chain tightening device

Abstract

The utility model belongs to the technical field of automobile parts, and particularly relates to an antiskid chain tightening device. Comprising a tightening screw, a tightening sleeve and an adjusting rod; the tightening sleeve is provided with a hollow inner cavity in the length direction of the tightening sleeve. The tightening screw rod extends into the inner cavity from one end of the tightening sleeve; the adjusting rod extends into the inner cavity from the other end of the tightening sleeve and is in threaded connection with the tightening screw rod; the outer surface of the adjusting rod is attached to the inner wall of the inner cavity. A set of tightening arms are oppositely arranged on the outer surface of the tightening sleeve and the outer surface of the adjusting rod in the length direction of the tightening sleeve, and the tightening screw can drive the set of tightening arms to be relatively close to each other when being stressed to rotate so as to tighten the antiskid chain. According to the anti-skid chain tightening device, the tightening screw is driven to drive the adjusting rod to stretch out and draw back, so that the tightening sleeve and the tightening arms on the adjusting rod are relatively close to each other, and the anti-skid chain is tightened; the whole structure is relatively simple, tightening of the antiskid chain can be achieved in a labor-saving mode, and the labor intensity is relieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, and specifically relates to a skid chain tightening device. BACKGROUND

[0002] Due to construction, climate environment and road slope, the original tire of the automobile is prone to skidding when passing through these scenes, especially on icy and snowy roads, muddy roads and mountain and steep slope scenes. In order to pass through safely and smoothly, it is necessary to install a skid chain on the tire to increase the friction between the tire and the road, prevent the vehicle from skidding and fishtailing, ensure the safety of driving, and enable the vehicle to start, escape, drive and brake smoothly. When the skid chain is installed on the tire, a lot of effort is needed to put the skid chain on the tire and tighten it. Especially in cold weather or harsh environment, this makes it very difficult for the driver to operate, increasing the time and physical cost of installation. The installation is laborious and time-consuming.

[0003] The prior art provides a skid chain tightening device (publication number: CN11180617A), which comprises a shell and a power assembly, a tightening assembly and a locking assembly in the shell. The power assembly comprises a power shaft, a ratchet wheel and a driving gear. The power shaft is rotatably arranged on the shell. The ratchet wheel and the driving gear are fixedly arranged on the power shaft. The tightening assembly comprises a driven shaft, a driven gear, a take-up reel and a steel wire. The driven shaft is rotatably arranged on the shell. The driven gear and the take-up reel are fixedly arranged on the driven shaft. The driven gear is rotatably engaged with the driving gear. The rear end of the steel wire is fixedly arranged on the take-up reel and wound around the take-up reel. The front end of the steel wire extends out of the shell. The locking assembly comprises an adjusting screw, an extension rod and a pawl. The adjusting screw is rotatably arranged on the shell. The extension rod is slidably arranged on the shell, and the front end of the extension rod is rotatably arranged in the adjusting screw. The pawl is hinged to the rear end of the extension rod, and the pawl is in clamping cooperation with the ratchet wheel.

[0004] However, the existing skid chain tightening device has the problems of complex overall structure and too many parts, which leads to high configuration cost. It is necessary to further improve it. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a skid chain tightening device to solve the problem of high configuration cost caused by complex overall structure and too many parts in the prior art.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] The anti-skid chain tightening device comprises a tightening screw, a tightening sleeve and an adjusting rod; the tightening sleeve is provided with a hollow inner cavity along its length direction; the tightening screw is inserted into the inner cavity from one end of the tightening sleeve; the adjusting rod is inserted into the inner cavity from the other end of the tightening sleeve and is threadedly connected with the tightening screw; the outer surface of the adjusting rod is attached to the inner wall of the inner cavity; a set of tightening arms are oppositely arranged on the outer surface of the tightening sleeve and the adjusting rod along the length direction of the tightening sleeve, and the set of tightening arms can be relatively close to each other to tighten the anti-skid chain when the tightening screw is rotated under force.

[0008] In the utility model, the anti-skid chain tightening device tightens the anti-skid chain on the tire, can drive the tightening screw to rotate through the power of electric tools or wrenches, the tightening screw rotates to drive the adjusting rod to shrink relative to the tightening sleeve through the threaded connection, correspondingly, the tightening arms on the tightening sleeve and the adjusting rod are close to each other, and then the anti-skid chain is tightened. In this process, the labor intensity can be reduced, and the tightening efficiency of the anti-skid chain is improved; and the overall structure of the anti-skid chain tightening device is relatively simple, practical and low in configuration cost.

[0009] Further, the end of the tightening screw away from the adjusting rod is provided with a limiting section, the limiting section abuts against the end wall of the tightening sleeve; the end of the limiting section away from the tightening sleeve is provided with a driving butt joint section, and the radial section of the driving butt joint section is one of triangle, square and hexagon.

[0010] The radial section of the driving butt joint section can be hexagonal, and a hexagonal sleeve is selected to be installed on the interface of the electric tool, so that the force on the tightening screw can be realized.

[0011] Further, the set of tightening arms comprises a first tightening plate and a second tightening plate, and the side wall end of the first tightening plate opposite to the second tightening plate is provided with a protrusion; the protrusion can improve the clamping effect on the anti-skid chain.

[0012] Further, the set of tightening arms comprises a first clamping plate and a second clamping plate, and the side wall of the first clamping plate opposite to the second clamping plate is provided with a clamping groove.

[0013] Further, the end of the adjusting rod close to the tightening screw is provided with an internal thread, and the adjusting rod is threadedly connected with the threaded section of the tightening screw through the internal thread.

[0014] Further, the outer surface of the tightening sleeve is provided with a guide groove which is communicated with the inner cavity; the tightening screw is provided with a bidirectional threaded section, the tightening arms on the tightening sleeve are in sliding fit with the guide groove and extend into the inner cavity and are connected with a threaded sleeve, one section of the threaded sleeve is in threaded connection with the bidirectional threaded section, and the other section of the bidirectional threaded section is in threaded connection with the adjusting rod.

[0015] In this way, the two tightening arms are driven to approach each other by the bidirectional thread, and compared with the single-threaded rod, the tightening efficiency can be doubled when the antiskid chain is tightened.

[0016] Compared with the prior art, the utility model has the following advantages by adopting the above technical scheme:

[0017] The antiskid chain tightening device has the following advantages: the manual labor intensity can be reduced, the tightening efficiency of the antiskid chain can be improved, the overall structure of the antiskid chain tightening device is relatively simple, the practicality is high, and the configuration cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model can be further illustrated by the non-limiting embodiments shown in the drawings.

[0019] Figure 1 Fig. 1 is one of the structural schematic diagrams of the antiskid chain tightening device of the utility model;

[0020] Figure 2 Fig. 2 is another of the structural schematic diagrams of the antiskid chain tightening device of the utility model;

[0021] Figure 3 Fig. 3 is a sectional view of the antiskid chain tightening device of the utility model;

[0022] Figure 4 Fig. 4 is a front view of the tightening screw in the utility model;

[0023] Figure 5 Fig. 5 is a front view of the tightening sleeve in the utility model;

[0024] Figure 6 Fig. 6 is a bottom view of the tightening sleeve in the utility model;

[0025] Figure 7 Fig. 7 is a front view of the adjusting rod in the utility model;

[0026] Figure 8The bottom view of the adjusting rod in the utility model;

[0027] Figure 9 The structure schematic view three of the anti-skid chain tightening device in the utility model;

[0028] Figure 10 The structure schematic view four of the anti-skid chain tightening device in the utility model;

[0029] Figure 11 The structure schematic view of the tightening sleeve in the utility model;

[0030] The main element symbol is explained as follows:

[0031] 100, tightening screw; 101, driving butt joint section; 102, limiting section; 103, threaded section; 200, tightening sleeve; 201, sleeve body; 202, inner cavity; 203, first tightening plate; 204, first protrusion; 205, first clamping plate; 206, first clamping groove; 207, guide groove; 208, connecting seat; 209, end seat; 210, limiting groove; 300, adjusting rod; 301, internal thread; 302, adjusting rod body; 303, second tightening plate; 304, second protrusion; 305, second clamping plate; 306, second clamping groove. DETAILED DESCRIPTION

[0032] The utility model will be explained in detail in combination with the drawings and specific embodiments, and it should be explained that, in the drawings or the description, similar or same parts all use same figure number, and the implementation mode that is not drawn or described in the drawings is the form that the ordinary skill in the art knows.In addition, the direction language mentioned in the embodiment, for example, "up", "down", "top", "bottom", "left", "right", "front", "back" and the like, is only the direction of the drawing, and is not used to limit the protection scope of the utility model.

[0033] As Figures 1-8As shown, the anti-skid chain tightening device includes a tightening screw 100, a tightening sleeve 200 and an adjusting rod 300; the hollow inner cavity 202 is arranged along the length direction of the tightening sleeve 200; the tightening screw 100 is inserted into the inner cavity 202 from one end of the tightening sleeve 200; the adjusting rod 300 is inserted into the inner cavity 202 from the other end of the tightening sleeve 200 and is threadedly connected with the tightening screw 100; the adjusting rod 300 can be selected as a tubular structure, the inner thread 301 is arranged at the end of the adjusting rod 300 close to the tightening screw 100, and the adjusting rod 300 is threadedly connected with the threaded section 103 of the tightening screw 100 through the inner thread 301. The outer surface of the adjusting rod 300 is attached to the inner wall of the inner cavity 202 and can be telescoped in the inner cavity 202; a set of tightening arms are arranged on the outer surfaces of the tightening sleeve 200 and the adjusting rod 300 in opposite directions along the length direction of the tightening sleeve 200, and the set of tightening arms can be driven to relatively approach each other to tighten the anti-skid chain when the tightening screw 100 is rotated under stress.

[0034] In the embodiment, the length of the tightening screw 100 is 248.0 mm, the length of the threaded section 103 of the tightening screw 100 is 210.0 mm, and the specification is m18*2.5; the main body of the tightening sleeve 200 is a sleeve body 201, which is arranged as a tubular structure, the length of the sleeve body 201 is 194 mm, the outer diameter of the tightening sleeve 200 is 40.5 mm, and the inner diameter of the inner cavity 202 is 29 mm; the set of tightening arms includes two tightening arms, and the movement stroke between the two tightening arms is 162-324 mm.

[0035] When the anti-skid chain is tightened by the anti-skid chain tightening device, the left end of the tightening screw 100 can be rotated by an electric tool to drive the tightening screw 100 to rotate; the tightening screw 100 is threadedly connected with the adjusting rod 300, so that the adjusting rod 300 is driven to shrink relative to the tightening sleeve 200; correspondingly, the tightening arms on the tightening sleeve 200 and the adjusting rod 300 approach each other, thereby tightening the anti-skid chain. In this process, the power transmission of the tightening screw 100 can reduce the labor intensity and improve the tightening efficiency of the anti-skid chain; in addition, the overall structure of the anti-skid chain tightening device is relatively simple, has high practicability, has low configuration cost, and can be mostly customized by using conventional pipes and screws in mass production, so that the market compatibility is high.

[0036] In the embodiment, the end seat 209 is integrally arranged at the left end of the tightening sleeve 200, the thickness of the end seat 209 is 8.0 mm, and the outer diameter is 52.0 mm; actually, the reinforcing ribs can be arranged between the end seat 209 and the outer surface of the tightening sleeve 200 according to the stress condition to improve the structural strength of the tightening sleeve 200.

[0037] In fact, the tightening screw 100 in the embodiment is provided with a limiting section 102 away from one end of the adjusting rod 300, the thickness of the limiting section 102 is 8.0 mm, and the outer diameter is 52.0 mm; the limiting section 102 is in abutment with the end wall (i.e. the left wall of the end seat 209) of the tightening sleeve 200; the middle part of the end seat 209 has a hole allowing the tightening screw 100 to pass through, but the hole of the end seat 209 does not allow the left end of the adjusting rod 300 to pass through, and can limit the left end of the adjusting rod 300. The driving butt joint section 101 away from one end of the tightening sleeve 200 is provided with a driving butt joint section 101, which is a cylinder; the radial section of the driving butt joint section 101 is triangular, square, hexagonal. It can be understood that the driving butt joint section 101, the limiting section 102 and the threaded section 103 of the tightening screw 100 are formed by machining a shaft body by a machine tool.

[0038] For example, the radial section of the driving butt joint section 101 in the embodiment can also be triangular, square, etc. Preferably, in order to match the hexagonal sleeve of the electric tool, the radial section of the driving butt joint section 101 is selected to be hexagonal, and the corresponding hexagonal sleeve is installed on the interface of the electric tool, so that the force on the tightening screw 100 can be realized; the electric tool is an electric wrench or an electric screwdriver.

[0039] As shown in Figure 3 , in the embodiment, the set of tightening arms includes a first tightening plate 203 and a second tightening plate 303, and the side wall end of the first tightening plate 203 and the second tightening plate 303 is provided with a protrusion; the protrusion can improve the clamping effect on the anti-skid chain.

[0040] For example, as shown in Figures 5 to 8 , the length, width and thickness of the tightening arm on the tightening sleeve 200 are 75.0 mm, 24 mm and 10.0 mm respectively; the adjusting rod 300 mainly includes an adjusting rod body 302, which is a pipe, and an internal thread 301 provided on the inner wall of one end of the adjusting rod body 302; the length of the adjusting rod body 302 is 210.0 mm, the inner diameter is 19 mm, and the outer diameter is 28.5 mm; the length of the internal thread 301 is 40 mm, and the specification is M18*2.5; the protrusion is specifically a first protrusion 204 and a second protrusion 304, and the length, height and thickness are 4 mm, 4 mm and 10 mm respectively; the size specification of the tightening arm of the adjusting rod 300 is the same as that of the tightening arm on the tightening sleeve 200.

[0041] For example, as shown in Figure 10As shown, the outer surface of the tightening sleeve 200 is provided with a guide groove 207 which is connected to the inner cavity 202; the tightening screw 100 is provided with a bidirectional threaded segment 103, the tightening arms on the tightening sleeve 200 are in sliding fit with the guide groove 207 and extend to the inner cavity 202 and are connected with a threaded sleeve, the threaded sleeve is in threaded connection with one segment of the bidirectional threaded segment 103, and the other segment of the bidirectional threaded segment 103 is in threaded connection with the adjusting rod 300.

[0042] When the tightening screw 100 rotates, the two tightening arms are synchronously driven to move relative to each other by the bidirectional threaded segment 103 to tighten the antiskid chain; in this way, the two tightening arms are driven to move close to each other by the bidirectional thread, and compared with a single threaded rod, the tightening efficiency can be doubled when the antiskid chain is tightened.

[0043] For example, in order to assemble the threaded sleeve, the end seat 209 of the tightening sleeve 200 is provided in a form of being penetrated by the guide groove 207; in addition, the end of the tightening sleeve 200 is fixed by a connecting seat 208; the connecting seat 208 and the end seat 209 can be fixed by clamping, threaded connection or screw connection.

[0044] As shown in the drawings, Figure 9 In this embodiment, the set of tightening arms includes a first clamping plate 205 and a second clamping plate 305, and the opposite side walls of the first clamping plate 205 and the second clamping plate 305 are provided with clamping grooves; the clamping grooves are specifically a first clamping groove 206 and a second clamping groove 306.

[0045] Some antiskid chains are adapted by the clamping grooves to clamp the tightening end of the antiskid chain for tightening. For example, some antiskid chains with board nails and reinforcing columns are adapted.

[0046] For example, the connection between the tightening arms and the tightening sleeve 200 or the adjusting rod 300 can be realized by welding, or can be realized by setting buckles and sockets, or can be realized by threaded connection and nut connection. The above provides two different tightening arms which can adapt to different antiskid chains by different clamping modes, have strong adaptability and high practicability.

[0047] As shown in the drawings, Figure 11 In this embodiment, a limiting groove 210 is arranged on the inner wall of the tightening sleeve 200, and a limiting rib which is in sliding fit with the limiting groove 210 is arranged on the outer surface of the adjusting rod 300; the limiting rib can play the role of limiting and guiding, and can also play the role of improving the structural strength of the adjusting rod 300.

[0048] The anti-skid chain tightening device provided by the embodiment drives the tightening screw 100 to rotate by applying force to the tightening screw 100 through an electric tool such as an electric wrench; the tightening screw 100 rotates to drive the adjusting rod 300 to shrink relative to the tightening sleeve 200 through the threaded connection between the tightening screw 100 and the adjusting rod 300, thereby driving the tightening arms on the tightening sleeve 200 and the adjusting rod 300 to approach each other to tighten the anti-skid chain; after the anti-skid chain is buckled at a tightening position, reverse force is applied to make the tightening arms move away from each other, the next position to be tightened is replaced, and reciprocating operation is performed until the tightening is completely completed; in this process, the labor intensity can be reduced, and the tightening efficiency of the anti-skid chain is improved; in addition, the overall structure of the anti-skid chain tightening device is relatively simple, practical, and low in configuration cost.

[0049] The anti-skid chain tightening device provided by the embodiment is described in detail above. The description of the specific embodiments is only used to help understand the method of the anti-skid chain tightening device and the core idea thereof. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the anti-skid chain tightening device without departing from the principles of the anti-skid chain tightening device, and these improvements and modifications also fall within the protection scope of the claims of the anti-skid chain tightening device.

Claims

1. An anti-skid chain tightening device comprising a tightening screw, a tightening sleeve and an adjusting lever; characterized in that, The tightening sleeve is provided with a hollow inner cavity along its length direction; the tightening screw is extended into the inner cavity from one end of the tightening sleeve; the adjusting rod is extended into the inner cavity from the other end of the tightening sleeve and is threadedly connected with the tightening screw; the outer surface of the adjusting rod is in close contact with the inner wall of the inner cavity; the outer surfaces of the tightening sleeve and the adjusting rod are oppositely provided with a set of tightening arms along the length direction of the tightening sleeve, and the tightening screw can drive the set of tightening arms to relatively approach when it is rotated under force, so as to tighten the antiskid chain.

2. The antiskid chain tightening device according to claim 1, characterized by The end of the tightening screw away from the adjusting rod is provided with a limiting section, and the limiting section is in abutment with the end wall of the tightening sleeve; the end of the limiting section away from the tightening sleeve is provided with a driving butt joint section, and the radial section of the driving butt joint section is one of triangle, square and hexagon.

3. The antiskid chain tightening device according to claim 1, wherein The set of tightening arms comprises a first tightening plate and a second tightening plate, and the side wall end of the first tightening plate opposite to the second tightening plate is provided with a protrusion.

4. The antiskid chain tightening device according to claim 1, wherein The set of tightening arms comprises a first clamping plate and a second clamping plate, and a clamping groove is formed in the side wall of the first clamping plate opposite to the second clamping plate.

5. The antiskid chain tightening device according to claim 1, wherein The end of the adjusting rod close to the tightening screw is provided with an internal thread, and the adjusting rod is threadedly connected with the threaded section of the tightening screw through the internal thread.

6. The antiskid chain tightening device according to claim 1, wherein The outer surface of the tightening sleeve is provided with a guide groove, and the guide groove is communicated with the inner cavity; the tightening screw is provided with a bidirectional threaded section; the tightening arms on the tightening sleeve are in sliding fit with the guide groove and are extended into the inner cavity and connected with a threaded sleeve; the threaded sleeve is threadedly connected with one section of the bidirectional threaded section, and the other section of the bidirectional threaded section is threadedly connected with the adjusting rod.

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