End connector of tubular torsion arm of hollow anti-side-rolling torsion bar and pull rod corresponding to end connector

Abstract

The utility model discloses an end connector of a tubular torsion arm of a hollow anti-side-rolling torsion bar, which comprises a joint ball and an annular joint sleeve which is wrapped on the peripheral surface of the joint ball and can rotate around the joint ball in multiple directions, two sides of the joint ball are exposed out of two sides of the annular joint sleeve, a radially arranged connecting hole is arranged on one exposed side of the joint ball, and the connecting hole is communicated with the annular joint sleeve. The end part of the tubular torsion arm is fixed with the joint ball in the connecting hole, and the joint sleeve is connected with the pull rod. The joint sleeve comprises a semi-annular outer half sleeve I, a semi-annular outer half sleeve II, an annular front inner half sleeve and an annular rear inner half sleeve, a semi-annular wear-resistant bushing I and a semi-annular wear-resistant bushing II are further arranged between the front inner half sleeve and the spherical surface of the joint ball as well as between the rear inner half sleeve and the spherical surface of the joint ball, and the wear-resistant bushing I and the wear-resistant bushing II are provided with smooth wear-resistant concave spherical surfaces. The torsion arm has the advantages that the problem that the tubular torsion arm cannot be directly connected with the pull rod is solved; the connection between the pull rod and the tubular torsion arm has a certain rotational degree of freedom, and can adapt to different working conditions.

Description

Technical Field

[0001] The utility model relates to an end connector of a hollow anti-rolling torsion bar tubular torsion arm and a corresponding pull rod, belonging to the technical field of train anti-rolling torsion bars. Background Art

[0002] On the premise of ensuring operational safety, lightweight design of trains is an important means to save materials used in train manufacturing and reduce operating energy consumption. The anti-roll torsion bar installed between the train body and the bogie is a cylindrical rod that uses a set torsional force to resist the body from rolling to one side when the train encounters strong side winds and excessive centrifugal forces on curves during operation. The existing technology uses a solid structure with a weight of tens to one hundred kilograms. There are dozens of anti-roll torsion bars on the train, with a total weight of several tons, which not only requires a large amount of high-quality steel, but also consumes a lot of operating energy.

[0003] In order to solve the above problems, our company studied the hollowing of the anti-roll torsion bar, and achieved the lightweight of the bar body while ensuring the torsional stiffness. However, during the process of realizing the hollowing of the bar body and after realizing the hollowing of the bar body, we are faced with the problem of how to design the parts where the outer ends of the torsion arms at both ends of the bar body are connected to the pull rod (103). Utility Model Content

[0004] The hollow design of the anti-roll torsion bar is to hollow out the torsion bar shaft and the torsion arms at both ends of the torsion bar shaft and form them as one piece. The wall thickness is required to be uniform and no welding or other fastening forms are allowed to ensure structural strength and torsional stiffness. This results in the torsion arms at both ends being tubular bodies, which cannot be directly connected to the pull rod. Its structural form and structural strength cannot meet the requirements for connecting the pull rod, and a corresponding connection structure needs to be designed.

[0005] The technical problem to be solved by the utility model is: how to provide a connecting body which can be connected with a pull rod for a tubular torsion arm port.

[0006] In view of the above problems, the technical solution proposed by the utility model is:

[0007] The invention discloses an end connector of a hollow anti-roll torsion bar tubular torsion arm, comprising a joint ball and an annular joint sleeve wrapped around the outer circumference of the joint ball and capable of rotating in multiple directions around the joint ball. The two sides of the joint ball are exposed on both sides of the annular joint sleeve, and a radially arranged connecting hole is provided on the exposed side of the joint ball. The end of the tubular torsion arm is fixed to the joint ball in the connecting hole, and the joint sleeve is connected to the pull rod.

[0008] The joint sleeve includes semi-circular outer half sleeve one and outer half sleeve two, and annular front inner half sleeve and rear inner half sleeve, the front inner half sleeve and rear inner half sleeve are respectively buckled on the front side and rear side of the joint ball, and the outer half sleeve one and outer half sleeve two are buckled on the outside of the front inner half sleeve and the rear inner half sleeve along the seam direction of the front inner half sleeve and the rear inner half sleeve, so as to constrain the front inner half sleeve and the rear inner half sleeve on the spherical surface of the joint ball.

[0009] There are also semi-annular wear-resistant bushings 1 and 2 between the front inner half sleeve, the rear inner half sleeve and the spherical surface of the joint ball. The wear-resistant bushings 1 and 2 have smooth and wear-resistant concave spherical surfaces. The wear-resistant bushings 1 and 2 are buckled on the joint ball, and their concave spherical surfaces fit with the outer spherical surface of the joint ball.

[0010] The arcuate outer surfaces of the wear-resistant bushing 1 and the wear-resistant bushing 2 both have arcuate ridges, and the joint between the front inner half sleeve and the rear inner half sleeve has a set spacing. When assembled, the ridges are located in the joint and are clamped and limited by the front inner half sleeve and the rear inner half sleeve.

[0011] The outer half sleeve one has a left fixed foot one and a right fixed foot one extending radially outward on the left and right sides respectively, and a left screw hole one and a right screw hole one are respectively provided on the left and right fixed feet. The outer half sleeve two has a left fixed foot two and a right fixed foot two extending radially outward on the left and right sides respectively, and a left screw hole two and a right screw hole two are respectively provided on the left and right fixed feet. The left fixed foot one fits with the left fixed foot two, and the left screw hole one and the left screw hole two are communicated for the screw to pass through and be tightened. The right fixed foot one fits with the right fixed foot two, and the right screw hole one and the right screw hole two are communicated for the screw to pass through and be tightened.

[0012] The end of the tubular torsion arm is inserted into the connecting hole by interference fit.

[0013] The end of the tubular torsion arm is located in the connecting hole through threaded engagement.

[0014] A pull rod corresponding to the above-mentioned end connector, wherein an end surface of one end of the pull rod has a left screw hole and a right screw hole axially arranged, and the left screw hole and the right screw hole can correspond to the left screw hole one and the right screw hole one respectively. Beneficial Effects

[0015] 1. Solved the problem that the tubular torsion arm cannot be directly connected to the pull rod;

[0016] 2. Since the joint sleeve can rotate in multiple directions around the joint ball, the connection between the pull rod connected to the joint sleeve and the tubular torsion arm has a certain degree of rotational freedom, which can adapt to different working conditions;

[0017] 3. The structure is simple and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of disassembling the end connector;

[0019] Figure 2 is a three-dimensional schematic diagram of the end connector and the pull rod to be assembled;

[0020] Figure 3 It is a three-dimensional schematic diagram of the end connector and the pull rod after being assembled.

[0021] In the figure: 100, hollow anti-roll torsion bar; 101, tubular torsion arm; 102, end connector; 103, tie rod; 1031, left screw hole; 1032, right screw hole; 1, joint ball; 11, connecting hole; 2, joint sleeve; 21, outer half sleeve one; 211, left fixed foot one; 2111, left screw hole one; 212, right fixed foot one; 2121, right screw hole one; 22, outer half sleeve two; 221, left fixed foot two; 2211, left screw hole two; 222, right fixed foot two; 2221, right screw hole two; 23, front inner half sleeve; 24, rear inner half sleeve; 25, wear-resistant bushing one; 26, wear-resistant bushing two; 27, ridge; 28, screw. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments and drawings: Embodiment 1

[0023] like Figure 1 , 2 As shown, an end connector of a hollow anti-roll torsion bar 100 tubular torsion arm comprises a joint ball 1 and an annular joint sleeve 2 wrapped around the outer circumference of the joint ball 1 and capable of rotating in multiple directions around the joint ball. Both sides of the joint ball 1 are exposed on both sides of the annular joint sleeve 2. A radially arranged connecting hole 11 is provided on the exposed side of the joint ball 1. The end of the tubular torsion arm 101 is fixed to the joint ball 1 in the connecting hole 11, and the joint sleeve 2 is connected to the tie rod 103. In this way, the problem that the tubular torsion arm 101 cannot be directly connected to the tie rod 103 is solved, and because the joint sleeve 2 can rotate in multiple directions around the joint ball 1, the tie rod 103 connected to the joint sleeve 2 can have a certain degree of rotational freedom in the connection with the tubular torsion arm 101, which can adapt to different working conditions.

[0024] The joint sleeve 2 includes a semi-circular outer sleeve 1 21 and an outer sleeve 2 22, and an annular front inner sleeve 23 and a rear inner sleeve 24, wherein the front inner sleeve 23 and the rear inner sleeve 24 are respectively buckled on the front side and the rear side of the joint ball 1, and the outer sleeve 1 21 and the outer sleeve 2 22 are buckled on the outside of the front inner sleeve 23 and the rear inner sleeve 24 along the seam direction of the front inner sleeve 23 and the rear inner sleeve 24, so as to constrain the front inner sleeve 23 and the rear inner sleeve 24 on the spherical surface of the joint ball 1. In this way, the stability of the joint sleeve 2 can be enhanced.

[0025] There are also semi-annular wear-resistant bushing 1 25 and wear-resistant bushing 2 26 between the front inner half sleeve 23, the rear inner half sleeve 24 and the spherical surface of the joint ball 1. The wear-resistant bushing 1 25 and the wear-resistant bushing 2 26 have smooth and wear-resistant concave spherical surfaces. The wear-resistant bushing 1 25 and the wear-resistant bushing 2 26 are snapped onto the joint ball 1, and their concave spherical surfaces are fitted with the outer spherical surface of the joint ball 1 to increase the durability and flexibility of the ball joint.

[0026] The arcuate outer surfaces of the wear-resistant bushing 1 25 and the wear-resistant bushing 2 26 both have arcuate ridges 27 , and the joint between the front inner half sleeve 23 and the rear inner half sleeve 24 has a set spacing. During assembly, the ridges 27 are located in the joint and are clamped and defined by the front inner half sleeve 23 and the rear inner half sleeve 24 .

[0027] The outer half sleeve 1 21 has a left fixed foot 211 and a right fixed foot 1 extending radially outward on the left and right sides respectively, and the left fixed foot 211 and the right fixed foot 1 are respectively provided with a left screw hole 2111 and a right screw hole 2121, and the outer half sleeve 22 has a left fixed foot 221 and a right fixed foot 2 extending radially outward on the left and right sides respectively, and the left fixed foot 221 and the right fixed foot 222 are respectively provided with a left screw hole 2211 and a right screw hole 2221, the left fixed foot 211 is fitted with the left fixed foot 221, the left screw hole 1 2111 and the left screw hole 2211 are communicated with each other for the screw 28 to pass through and be fastened, and the right fixed foot 212 is fitted with the right fixed foot 222, and the right screw hole 1 2121 and the right screw hole 2221 are communicated with each other for the screw 28 to pass through and be fastened.

[0028] The end of the tubular torsion arm 101 is inserted into the connecting hole 11 by interference fit.

[0029] The end of the tubular torsion arm 101 is located in the connecting hole 11 by threaded engagement.

[0030] like Figure 2 , 3 As shown, a pull rod 103 corresponding to the above-mentioned end connector has an axially arranged left screw hole 1031 and a right screw hole 1032 on one end face of the pull rod 103, and the left screw hole 1031 and the right screw hole 1032 can correspond to the left screw hole 1 2111 and the right screw hole 1 2121 respectively. During assembly, only two screws 28 are needed in total to realize the assembly of the ball joint and directly connect the end connector 102 to the pull rod 103. If two screws 28 are used to fix the outer half sleeve 1 21 and the outer half sleeve 2 22 separately to complete the assembly of the ball joint, and then a connecting piece is set to connect the ball joint with the pull rod 103, more parts and a more complicated structural setting will be required, which is contrary to the design concept of simplicity, rationality and efficiency.

[0031] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the protection scope of the present invention. Any modifications in equivalent forms should be regarded as falling within the protection scope of the present invention.

Claims

1. An end connector of a hollow anti-roll torsion bar tubular torsion arm, characterized in that: It comprises a joint ball (1) and an annular joint sleeve (2) which surrounds a portion of the outer circumference of the joint ball (1) and is capable of rotating in multiple directions around the joint ball. The two sides of the joint ball (1) are exposed on the two sides of the annular joint sleeve (2). A radially arranged connecting hole (11) is provided on the exposed side of the joint ball (1). The end of the tubular torsion arm (101) is fixed to the joint ball (1) in the connecting hole (11). The joint sleeve (2) is connected to a pull rod (103).

2. The end connector of the hollow anti-roll torsion bar tubular torsion arm according to claim 1, characterized in that: The joint sleeve (2) comprises a semi-circular outer sleeve one (21) and an outer sleeve two (22), and an annular front inner sleeve (23) and a rear inner sleeve (24). The front inner sleeve (23) and the rear inner sleeve (24) are respectively buckled on the front side and the rear side of the joint ball (1). The outer sleeve one (21) and the outer sleeve two (22) are buckled on the outside of the front inner sleeve (23) and the rear inner sleeve (24) along the seam direction of the front inner sleeve (23) and the rear inner sleeve (24), so as to constrain the front inner sleeve (23) and the rear inner sleeve (24) on the spherical surface of the joint ball (1).

3. The end connector of the hollow anti-roll torsion bar tubular torsion arm according to claim 2, characterized in that: A semi-circular wear-resistant bushing 1 (25) and a wear-resistant bushing 2 (26) are provided between the front inner half sleeve (23) and the rear inner half sleeve (24) and the spherical surface of the joint ball (1). The wear-resistant bushing 1 (25) and the wear-resistant bushing 2 (26) have smooth and wear-resistant concave spherical surfaces. The wear-resistant bushing 1 (25) and the wear-resistant bushing 2 (26) are buckled onto the joint ball (1), and their concave spherical surfaces are in contact with the outer spherical surface of the joint ball (1).

4. The end connector of the hollow anti-roll torsion bar tubular torsion arm according to claim 3, characterized in that: The arcuate outer surfaces of the wear-resistant bushing 1 (25) and the wear-resistant bushing 2 (26) both have arcuate ridges (27), and the joint between the front inner half sleeve (23) and the rear inner half sleeve (24) has a set spacing. When assembled, the ridges (27) are located in the joint and are clamped and defined by the front inner half sleeve (23) and the rear inner half sleeve (24).

5. The end connector of the hollow anti-roll torsion bar tubular torsion arm according to claim 4, characterized in that: The left and right sides of the outer half sleeve (21) are respectively provided with a left fixed foot (211) and a right fixed foot (2121) extending radially outwards, and the left fixed foot (211) and the right fixed foot (2121) are respectively provided with a left screw hole (2111) and a right screw hole (2121), and the left and right sides of the outer half sleeve (22) are respectively provided with a left fixed foot (221) and a right fixed foot (2121) extending radially outwards, and the left fixed foot (221) and the right fixed foot (2121) are respectively provided with The left screw hole 2 (2211) and the right screw hole 2 (2221), the left fixing foot 1 (211) and the left fixing foot 2 (221) are in contact with each other, so that the screw (28) can pass through and be fastened, the right fixing foot 1 (212) and the right fixing foot 2 (222) are in contact with each other, so that the screw (28) can pass through and be fastened.

6. The end connector of the hollow anti-roll torsion bar tubular torsion arm according to claim 1, characterized in that: The end of the tubular torsion arm (101) is inserted into the connection hole (11) through interference fit.

7. The end connector of the hollow anti-roll torsion bar tubular torsion arm according to claim 1, characterized in that: The end of the tubular torsion arm (101) is located in the connection hole (11) through threaded engagement.

8. A pull rod corresponding to the end connector according to claim 5, characterized in that: A left screw hole (1031) and a right screw hole (1032) are axially arranged on an end surface of one end of the pull rod (103), and the left screw hole (1031) and the right screw hole (1032) can correspond to the left screw hole 1 (2111) and the right screw hole 1 (2121) respectively.

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