Spherical traction device

Abstract

The utility model discloses a spherical traction device which comprises a traction seat, and a ball head mechanism is arranged at the bottom of an inner cavity of the traction seat. A limiting block is arranged on the front face of the inner wall of the traction seat, a pressing mechanism is arranged at the top of an inner cavity of the traction seat and comprises a U-shaped plate, a matching mechanism is arranged in an inner cavity of the U-shaped plate, and connecting mechanisms are arranged on the two sides of the traction seat; the multiple limiting plates are fixed to the top of the inner wall of the U-shaped plate; a plurality of connecting holes; the multiple clamping grooves are formed in the bottoms of the two sides of the U-shaped plate correspondingly; and the nut and the pressing screw rod are fixed. By means of the arrangement mode that the ball head mechanism, the pressing mechanism and the matching mechanism are matched, the matching mechanism cannot be disengaged from the ball head mechanism at will, horizontal rotation and vertical rotation of a certain angle between the matching mechanism and the ball head mechanism are facilitated, and the device is conveniently suitable for being used by a tractor and a semitrailer on an uneven road surface.

Description

Technical Field

[0001] The utility model relates to the technical field of trailer traction, in particular to a spherical traction device. Background Art

[0002] A trailer is installed on a car carrier or a mid-axle box car. It is a commercial vehicle equipped with a special device for towing a semi-trailer. The trailer is towed by a tractor. There are two ways to connect the tractor and the trailer: the first is that the front half of the trailer is placed on the traction saddle above the rear section of the tractor, and the bridge behind the tractor bears part of the weight of the trailer. This is a semi-trailer; the second is that the front end of the trailer is connected to the rear end of the tractor, and the tractor only provides forward pulling force, towing the trailer, but does not bear the downward weight of the trailer. This is a full trailer. When an existing semi-trailer is connected to a tractor, a traction device needs to be used.

[0003] For example, application No. 201921312610.X discloses a ball head tractor for a semi-trailer product, including a traction seat, a connecting assembly and a traction rod. The connecting assembly includes a ball head, a matching block, a clamping block, a limiting shaft and a nut. The ball head is fixed on the traction seat, and a through hole A is provided on the ball head, and the bottom end of the through hole A passes through the traction seat; the matching block is a hemispherical body, and a hemispherical groove A is provided at the plane end, and a through hole B is provided at the bottom of the groove A. One side of the spherical surface of the matching block is connected to one end of the traction rod, and the matching block is sleeved on the ball head through the groove A; the clamping block is a concave sphere, and a concave spherical groove B is provided at the plane end. The top end of the limiting shaft is connected to the bottom of the groove B, and its bottom end passes through the through hole B and the through hole A in turn and is located below the traction seat, and is threadedly connected to the nut, and the outer convex surface of the matching block is inscribed in the groove B. Since the limit shaft of the above-mentioned tractor is inserted in the middle of the ball head, the traction seat and the drawbar can only rotate in the horizontal direction. When used for tractors and semi-trailers with a height difference, forced twisting force will occur between the traction seat and the drawbar, and it is not suitable for towing a semi-trailer on uneven roads. Utility Model Content

[0004] The purpose of the utility model is to provide a spherical traction device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spherical traction device, comprising: a traction seat, the bottom of the inner cavity of which is fixedly connected with a ball head mechanism;

[0006] The front side of the inner wall of the traction seat is fixedly connected to a limit block, and the top of the inner cavity of the traction seat is provided with a clamping mechanism, and the clamping mechanism includes:

[0007] A U-shaped plate, wherein the inner cavity of the U-shaped plate is provided with a matching mechanism movably embedded with the ball head mechanism, and both sides of the traction seat are provided with connection mechanisms for positioning the U-shaped plate;

[0008] A plurality of limiting plates, wherein the plurality of limiting plates are respectively fixed to the top of the inner wall of the U-shaped plate;

[0009] A plurality of connection holes, wherein the plurality of connection holes are respectively opened at the top of both sides of the U-shaped plate;

[0010] A plurality of card slots, wherein the plurality of card slots are respectively arranged at the bottom of both sides of the U-shaped plate;

[0011] A fixing nut and a compression screw, wherein the compression screw is interlaced and connected with the middle thread of the fixing nut.

[0012] Preferably, the ball head mechanism comprises:

[0013] A base, the base being fixed to the bottom of the inner wall of the fifth wheel;

[0014] An embedding groove, the embedding groove is provided on the upper surface of the base;

[0015] The ball head seat is fixedly installed in the inner cavity of the embedding groove through a mounting nail, and the matching mechanism is embedded in the top outer wall of the ball head seat.

[0016] Preferably, the U-shaped plate is arranged in the top inner cavity of the traction seat, the fixing nut is fixed to the top of the U-shaped plate, and the pressing screw is slidably and interlacedly connected with the top of the U-shaped plate.

[0017] Preferably, the connecting mechanism comprises:

[0018] A rotating bolt, wherein the rotating bolt is slidably inserted and connected with the top of the side of the traction seat, and the rotating bolt cooperates with the nut to be inserted and locked and fixed with the inner cavity of the connecting hole;

[0019] A locking assembly is used to limit the fit of the card slot.

[0020] Preferably, the locking assembly comprises:

[0021] A limiting sleeve, the limiting sleeve is fixedly inserted into the bottom of the side of the traction seat;

[0022] A movable sleeve, the movable sleeve is slidably and interlacedly connected with one end of the limiting sleeve;

[0023] A plurality of positioning bolts, wherein one of the positioning bolts is fixed to one end of the limiting sleeve with a nut, and another of the positioning bolts is fixed to one end of the movable sleeve with a nut;

[0024] A pin shaft, the pin shaft is slidably inserted into the inner cavity of the limiting sleeve, one end of the pin shaft is limitedly fitted with the inner wall of the slot, and the pin shaft is vertically inserted and connected with the middle part of another positioning bolt;

[0025] A tension spring is sleeved on the outer wall of the pin shaft and installed between the pin shaft and the limiting sleeve.

[0026] Preferably, the matching mechanism includes:

[0027] A traction spoon, the traction spoon is movably embedded in the top of the ball head seat;

[0028] A mounting plate, the mounting plate being fixed to one end of the traction spoon;

[0029] An oil storage tank, the oil storage tank is opened on the top of the traction spoon;

[0030] An oil outlet hole, the oil outlet hole is opened at the bottom of one end of the oil storage tank;

[0031] The sealing head is sealed and rotated on the top of the oil storage tank, and the bottom of the sealing head is tightly fitted with the inner cavity of the oil outlet hole through a sealing gasket.

[0032] Preferably, the other end of the traction spoon is movably fitted with one end of the limit block, the plurality of limit plates are respectively movably fitted with both sides of the top of the traction spoon, and the bottom end of the clamping screw is fitted with the top of the traction spoon.

[0033] Technical effects and advantages of the utility model:

[0034] The utility model adopts the arrangement mode that the ball head mechanism, the pressing mechanism and the matching mechanism are matched with each other, so that the matching mechanism can be pressed on the top of the ball head mechanism, and the connecting mechanism is used to form a double insurance to press the U-shaped plate, so that the matching mechanism will not be separated from the ball head mechanism at will, and the horizontal rotation between the matching mechanism and the ball head mechanism and the vertical rotation at a certain angle are convenient, and it is suitable for use with tractors and semi-trailers on uneven roads. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0036] Figure 2 It is a schematic diagram of the overall structure of the U-shaped plate of the utility model.

[0037] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model at the traction seat.

[0038] Figure 4 It is a schematic diagram of the side sectional structure of the ball head seat of the utility model.

[0039] In the figure: 1. traction seat; 2. ball head mechanism; 21. base; 22. embedded groove; 23. ball head seat; 3. limit block; 4. clamping mechanism; 41. U-shaped plate; 42. limit plate; 43. connecting hole; 44. slot; 45. fixing nut; 46. clamping screw; 5. connecting mechanism; 51. rotating bolt; 52. locking assembly; 521. limit sleeve; 522. movable sleeve; 523. positioning bolt; 524. pin shaft; 525. tension spring; 6. matching mechanism; 61. traction spoon; 62. mounting plate; 63. oil storage tank; 64. oil outlet; 65. sealing head. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] The utility model provides Figure 1-4 A spherical traction device shown in the figure comprises: a traction seat 1, the traction seat 1 is a U-shaped frame structure, the traction seat 1 is installed on the tractor, the bottom of the inner cavity of the traction seat 1 is fixedly connected with a ball head mechanism 2, the ball head mechanism 2 comprises: a base 21, an embedding groove 22 and a ball head seat 23, the base 21 is fixed to the bottom of the inner wall of the traction seat 1, the embedding groove 22 is opened on the upper surface of the base 21, the ball head seat 23 is fixedly installed in the inner cavity of the embedding groove 22 by means of mounting nails, and the top of the ball head seat 23 is a round ball head structure;

[0042] Furthermore, a limiting block 3 is fixedly connected to the front of the inner wall of the traction seat 1, and one end of the limiting block 3 is an arc-shaped structure;

[0043] Furthermore, a clamping mechanism 4 is provided at the top of the inner cavity of the traction seat 1, and the clamping mechanism 4 includes: a U-shaped plate 41, a plurality of limit plates 42, a plurality of connecting holes 43, a plurality of slots 44, a fixing nut 45 and a clamping screw 46. The U-shaped plate 41 is provided at the top inner cavity of the traction seat 1, and the plurality of limit plates 42 are respectively fixed to the top of the inner wall of the U-shaped plate 41, and the plurality of limit plates 42 are two limit plates 42, and the bottom of the limit plate 42 is an arc-shaped structure, and the plurality of connecting holes 43 are respectively provided at the top of both sides of the U-shaped plate 41, and the plurality of slots 44 are respectively provided at the bottom of both sides of the U-shaped plate 41, and the clamping screw 46 is threadedly interlaced with the middle part of the fixing nut 45, and the fixing nut 45 is fixed to the top of the U-shaped plate 41, and the clamping screw 46 is slidably interlaced with the top of the U-shaped plate 41, and the bottom of the clamping screw 46 can be adjusted between the two limit plates 42 by rotating the clamping screw 46 and the fixing nut 45;

[0044] Furthermore, both sides of the traction seat 1 are provided with a connection mechanism 5 for positioning the U-shaped plate 41, and the connection mechanism 5 includes: a rotating bolt 51 and a locking assembly 52, the rotating bolt 51 is slidably inserted and connected with the top of the side of the traction seat 1, and the rotating bolt 51 cooperates with the nut to be inserted and locked with the inner cavity of the connecting hole 43, and the U-shaped plate 41 is conveniently fixed in position by rotating the bolt 51, so that the U-shaped plate 41 is stabilized in the inner cavity of the traction seat 1;

[0045] Specifically, the locking assembly 52 is used to limit the fit of the card slot 44. The locking assembly 52 includes: a limiting sleeve 521, a movable sleeve 522, a plurality of positioning bolts 523, a pin 524 and a tension spring 525. The limiting sleeve 521 is fixedly inserted into the bottom of the side of the traction seat 1, and the movable sleeve 522 is slidably inserted and connected with one end of the limiting sleeve 521. One of the positioning bolts 523 is fixed to one end of the limiting sleeve 521 with a nut, and another positioning bolt 523 is fixed to one end of the movable sleeve 522 with a nut, and another positioning bolt 523 is slidably inserted and connected with the top and bottom of the limiting sleeve 521. The pin 524 is slidably inserted into the inner cavity of the limiting sleeve 521, and one end of the pin 524 is limitedly fitted with the inner wall of the card slot 44, and the pin 524 is vertical to the middle of another positioning bolt 523. The interlaced connection is convenient for pulling the movable sleeve 522, which can drive the pin shaft 524 to move, so that one end of the pin shaft 524 can be away from the card slot 44, which is convenient for releasing the horizontal restriction on the U-shaped plate 41. The tension spring 525 is sleeved on the outer wall of the pin shaft 524, and the tension spring 525 is installed between the pin shaft 524 and the limiting sleeve 521. One end of the tension spring 525 is fixed to one end of the pin shaft 524, and the other end of the tension spring 525 is fixed to the middle of the inner wall of the limiting sleeve 521. Through the elasticity of the tension spring 525, when there is no external tension, it is convenient for one end of the pin shaft 524 to stably clamp the U-shaped plate 41 in the inner cavity of the traction seat 1, so that the U-shaped plate 41 will not move in the horizontal direction, which is convenient for improving the position stability of the U-shaped plate 41 again, so that it and the rotating bolt 51 form a double insurance, safe and reliable U-shaped plate 41 locking assembly 52;

[0046] Furthermore, the inner cavity of the U-shaped plate 41 is provided with a matching mechanism 6 movably embedded with the ball head mechanism 2, and the matching mechanism 6 is embedded in the top outer wall of the ball head seat 23. The matching mechanism 6 includes: a traction spoon 61, a mounting plate 62, an oil storage tank 63, an oil outlet hole 64 and a sealing head 65. The traction spoon 61 is movably embedded in the top of the ball head seat 23. The traction spoon 61 can rotate at multiple angles on the top of the ball head seat 23, which is convenient for use with tractors and semi-trailers traveling on different heights. The mounting plate 62 is fixed to one end of the traction spoon 61, and the mounting plate 62 is fixed to the semi-trailer by a mounting nail. The oil storage tank 63 is opened at the top of the traction spoon 61, and the oil outlet hole 64 is opened at the bottom of one end of the oil storage tank 63, so that the lubricating oil can flow between the ball head seat 23 and the traction spoon 61, so as to facilitate the reduction of the oil. The wear of the ball head seat 23 is low, the sealing head 65 is sealed and rotated on the top of the oil storage tank 63, and the bottom of the sealing head 65 is tightly fitted with the inner cavity of the oil outlet hole 64 through the sealing gasket. By rotating the sealing head 65, it is convenient to adjust the gap between the sealing gasket and the oil outlet hole 64, and it is convenient to adjust the oil output of the oil outlet hole 64. The other end of the traction spoon 61 is fitted and movable with one end of the limit block 3, and multiple limit plates 42 are respectively fitted and movable with the top two sides of the traction spoon 61. The bottom end of the clamping screw 46 is fitted with the top of the traction spoon 61, so that the clamping screw 46 can clamp the traction spoon 61, improve the stability of the position of the traction spoon 61, and make the replacement between the traction spoon 61 and the ball head seat 23 convenient and quick, which is suitable for traction connection use of tractors and semi-trailers in different occasions.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spherical traction device, comprising: A traction seat (1), wherein a ball head mechanism (2) is fixedly connected to the bottom of the inner cavity of the traction seat (1); The invention is characterized in that a limiting block (3) is fixedly connected to the front of the inner wall of the traction seat (1), and a clamping mechanism (4) is arranged at the top of the inner cavity of the traction seat (1), and the clamping mechanism (4) comprises: A U-shaped plate (41), wherein the inner cavity of the U-shaped plate (41) is provided with a matching mechanism (6) movably embedded with the ball head mechanism (2), and both sides of the traction seat (1) are provided with connection mechanisms (5) for positioning the U-shaped plate (41); A plurality of limiting plates (42), wherein the plurality of limiting plates (42) are respectively fixed to the top of the inner wall of the U-shaped plate (41); A plurality of connection holes (43), wherein the plurality of connection holes (43) are respectively opened at the top of both sides of the U-shaped plate (41); A plurality of card slots (44), wherein the plurality of card slots (44) are respectively disposed at the bottom of both sides of the U-shaped plate (41); A fixing nut (45) and a pressing screw (46), wherein the pressing screw (46) is interlaced and connected with a middle thread of the fixing nut (45).

2. A spherical traction device according to claim 1, characterized in that: The ball head mechanism (2) comprises: A base (21), wherein the base (21) is fixed to the bottom of the inner wall of the traction seat (1); An embedding groove (22), wherein the embedding groove (22) is formed on the upper surface of the base (21); The ball head seat (23) is fixedly mounted in the inner cavity of the embedding groove (22) by means of a mounting nail, and the matching mechanism (6) is embedded in the top outer wall of the ball head seat (23).

3. A spherical traction device according to claim 2, characterized in that: The U-shaped plate (41) is arranged in the top inner cavity of the traction seat (1), the fixing nut (45) is fixed to the top of the U-shaped plate (41), and the pressing screw (46) is slidably connected with the top of the U-shaped plate (41).

4. A spherical traction device according to claim 2, characterized in that: The connecting mechanism (5) comprises: A rotating bolt (51), the rotating bolt (51) is slidably inserted and connected with the top of the side of the traction seat (1), and the rotating bolt (51) cooperates with the nut to be inserted and locked into the inner cavity of the connecting hole (43); A locking assembly (52), wherein the locking assembly (52) is used to limit the fit of the card slot (44).

5. A spherical traction device according to claim 4, characterized in that: The locking assembly (52) comprises: A limiting sleeve (521), wherein the limiting sleeve (521) is fixedly inserted into the bottom of the side of the traction seat (1); A movable sleeve (522), wherein the movable sleeve (522) is slidably interlaced with one end of the limiting sleeve (521); A plurality of positioning bolts (523), wherein one of the positioning bolts (523) is fixed to one end of the limiting sleeve (521) in cooperation with a nut, and another of the positioning bolts (523) is fixed to one end of the movable sleeve (522) in cooperation with a nut; A pin shaft (524), the pin shaft (524) is slidably inserted into the inner cavity of the limiting sleeve (521), one end of the pin shaft (524) is limitedly fitted with the inner wall of the slot (44), and the pin shaft (524) is vertically inserted and connected with the middle part of another positioning bolt (523); A tension spring (525) is sleeved on the outer wall of the pin shaft (524), and the tension spring (525) is installed between the pin shaft (524) and the limiting sleeve (521).

6. A spherical traction device according to claim 2, characterized in that: The matching mechanism (6) comprises: A traction spoon (61), wherein the traction spoon (61) is movably embedded in the top of the ball head seat (23); A mounting plate (62), wherein the mounting plate (62) is fixed to one end of the traction spoon (61); An oil storage tank (63), wherein the oil storage tank (63) is disposed on the top of the traction spoon (61); An oil outlet hole (64), the oil outlet hole (64) being opened at the bottom of one end of the oil storage tank (63); A sealing head (65) is sealingly rotated on the top of the oil storage tank (63), and the bottom of the sealing head (65) is tightly fitted with the inner cavity of the oil outlet hole (64) through a sealing gasket.

7. A spherical traction device according to claim 6, characterized in that: The other end of the traction spoon (61) is movably fitted with one end of the limit block (3), the plurality of limit plates (42) are respectively movably fitted with both sides of the top of the traction spoon (61), and the bottom end of the pressing screw (46) is fitted with the top of the traction spoon (61).

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