Brake hose connecting structure for crane

Abstract

The utility model discloses a brake hose connecting structure for a crane, which comprises a brake assembly consisting of a brake hose, a brake air chamber and a relay valve end through-wall joint, and further comprises an axle assembly consisting of a thrust rod, a steering knuckle arm, a suspension oil cylinder and a steering pull rod, the brake hose is divided into two sections, namely a first hose and a second hose; wherein the first hose is communicated with the relay valve through-wall joint, and the second hose is communicated with the brake chamber; the support is arranged on the steering knuckle arm; a two-way connector is arranged in the middle of the support. And the two-way joint is used for communicating the two sections of brake hoses at the bracket.

Description

Technical Field

[0001] The utility model relates to the field of automobile cranes, in particular to a brake hose connection structure for cranes. Background Art

[0002] At present, pneumatic brake systems are widely used in truck cranes. In the current pneumatic brake systems, a spring sheathed hose or a plastic hose is often used to directly connect the relay valve end through-wall joint with the brake air chamber. Since the brake air chamber on the axle will move up and down with the suspension cylinder and rotate with the wheel side, the brake hose will also be driven by the brake air chamber to move up and down and rotate.

[0003] However, since there are components such as suspension cylinders, steering rods, and angle sensors around the hose, interference will inevitably occur when the brake hose rotates, which will increase the difficulty of later assembly and debugging. At the same time, since the hose is twisting back and forth, its joint is locked with the interface after being tightened by conventional fixings; therefore, the joint of the hose will be pulled back and forth between the interface; and after the joint of the hose is pulled back and forth, it is easy to loosen, causing air leakage. Furthermore, frequent twisting of the hose and frequent re-tightening of the joint will also reduce the service life of both. Summary of the invention

[0004] In view of the above technical problems, the utility model provides a brake hose connection structure for a crane. By changing the connection method of the original brake hose, the original whole brake hose is split into at least two sections of brake hose, and the two sections of brake hose are connected at the steering knuckle arm. The steering knuckle arm is used to maintain a relative static state with the brake air chamber, shortening the driven length and swing angle of the brake hose, reducing the degree of interference of the brake hose and the amplitude of the torsion of the brake hose, and reducing the phenomenon of loose joints and air leakage.

[0005] In order to achieve the above technical purpose, the utility model adopts the following technical means:

[0006] A brake hose connection structure for a crane, comprising a brake assembly consisting of a brake hose, a brake air chamber and a relay valve end through-wall joint, and also comprising an axle assembly consisting of a thrust rod, a steering knuckle arm, a suspension cylinder and a steering tie rod;

[0007] The brake hose is divided into two sections, namely a first hose and a second hose; wherein the first hose is connected to the relay valve through-wall connector, and the second hose is connected to the brake air chamber;

[0008] It also includes a bracket, which is arranged on the steering knuckle arm; a two-way joint is arranged in the middle of the bracket; the two-way joint is used to connect the two sections of the brake hose at the bracket.

[0009] The two-way joint is an L-shaped structure.

[0010] Both ends of the first hose and both ends of the two-way joint are quick-insertion joints; the quick-insertion joints enable the connecting end of the brake hose to be rotatably connected to the through-wall joint.

[0011] The quick-plug connector adopts a cannula quick-change connector.

[0012] The first hose is a hose with a length of 400-600 mm.

[0013] Beneficial effects:

[0014] First, the brake hose connection structure of the utility model changes the original connection method of the brake hose, splits the original whole brake hose into at least two sections of brake hose, and the two sections of brake hose are connected at the steering knuckle arm, and the steering knuckle arm is kept in a relatively static state with the brake air chamber, shortens the length and swing angle of the brake hose, reduces the degree of interference of the brake hose and the amplitude of the torsion of the brake hose, and plays the effect of reducing the loosening of the joint and air leakage.

[0015] Second, the brake hose connection structure of the utility model changes the connection mode of the original interface and uses the quick-connect connector to ensure the relative free rotation of the two ends of the connection, so that the hose is no longer restricted by the fixed connector when rotating, avoiding the pulling movement at the connector, thereby reducing the phenomenon of loose connector leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the brake hose connection structure of the utility model.

[0017] In the figure: 11, first hose; 12, second hose; 2, bracket; 3, brake air chamber; 4, thrust rod; 5, steering knuckle arm; 6, through-wall joint at the relay valve end; 7, through-wall joint at the bracket; 8, suspension cylinder; 9, steering tie rod. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] The schematic diagram of the brake hose connection structure of the utility model is as follows Figure 1 shown.

[0020] See also Figure 1The utility model brake hose connection structure includes a brake assembly consisting of a brake hose, a brake air chamber and a relay valve end through-wall joint, and also includes an axle assembly consisting of a thrust rod, a steering knuckle arm, a suspension cylinder and a steering tie rod; the brake hose is divided into two sections, namely a first hose and a second hose; wherein the first hose is connected to the relay valve through-wall joint, and the second hose is connected to the brake air chamber; and further includes a bracket, which is arranged on the steering knuckle arm; a two-way joint is arranged in the middle of the bracket; the two-way joint is used to connect the two sections of the brake hose at the bracket; wherein the two-way joint is an L-shaped structure; both ends of the first hose and both ends of the two-way joint adopt quick-insert joints, which can make the connection end of the brake hose rotatably connected to the through-wall joint, specifically, it adopts a cannula quick-change joint. The first hose generally adopts a hose with a length of 400-600mm, which effectively shortens the length of the connecting hose compared to the original 800mm length of the brake hose.

[0021] During vehicle driving, the brake air chamber drives the brake hose to perform two main actions: first, when the vehicle turns, the brake air chamber rotates left and right along the axis of the suspension cylinder along the axle wheel edge, driving the brake hose to rotate; second, when the vehicle encounters a road section with poor passability (such as uneven roads, bridge holes, etc.), the suspension cylinder is required to realize the axle lifting and lowering action, and at this time the brake hose rises and falls with the axle.

[0022] Since there are suspension cylinders, steering rods, angle sensors and other components around the brake hose, interference will inevitably occur when the brake hose rotates, which will increase the difficulty of later assembly and debugging. At the same time, due to the long-term torsion of the hose, the joint can only change the circular rotation into left and right pulling motion due to its fixation, causing pulling motion to it. After the joint moves back and forth, it is easy to cause looseness and leakage.

[0023] Therefore, in the improved hose connection structure of the utility model, when the brake air chamber rotates and moves up and down: the wall connector at the relay valve end remains stationary, while the brake air chamber, the bracket, the quick-insert wall connector at the bracket, and the second hose connecting the bracket and the brake air chamber all remain relatively stationary. When the brake air chamber moves, it rotates with the brake air chamber or moves up and down with the axle, and the rotation angle and the lifting amplitude are the same. It can be seen that in both actions, the bracket quick-insert wall connector, the brake air chamber, and the second hose connecting the two remain relatively stationary.

[0024] The first hose connected between the bracket quick-insert wall connector and the brake air chamber moves relative to the relay valve end wall connector. At this time, since the original brake hose is split into at least two sections, the length of the hose becomes shorter in the new connection method compared to the original length of the moving hose, that is, the movement amplitude of the hose is reduced, reducing the degree of interference of the brake hose and the amplitude of the brake hose twisting, which has the effect of reducing the loosening and air leakage of the joint; further, the shortened hose reduces the pulling force on the joints at both ends, thereby improving the interference problem between the brake hose and the suspension cylinder, thrust rod, steering rod and other axle and steering accessories.

[0025] At the same time, because the upper end of the joint connecting the two sections of the hose at the bracket is a quick-connect joint, and the use of the quick-connect joint can ensure the relative freedom of rotation of the two ends of the connection, the hose is no longer restricted by the fixed joint when rotating, so the situation of pulling movement at the joint can be avoided, thereby reducing the phenomenon of loose joint leakage; and the use of the quick-connect joint can also buffer the force on the brake hose when the axle is turning, so the phenomenon of loose joint leakage will also be reduced.

Claims

1. A brake hose connection structure for a crane, comprising a brake assembly consisting of a brake hose, a brake air chamber and a relay valve end through-wall joint, and also comprising an axle assembly consisting of a thrust rod, a steering knuckle arm, a suspension cylinder and a steering tie rod; characterized in that: The brake hose is divided into two sections, namely a first hose and a second hose; wherein the first hose is connected to the relay valve through-wall connector, and the second hose is connected to the brake air chamber; It also includes a bracket, which is arranged on the steering knuckle arm; a two-way joint is arranged in the middle of the bracket; the two-way joint is used to connect the two sections of the brake hose at the bracket.

2. The brake hose connection structure for a crane according to claim 1, characterized in that: The two-way joint is an L-shaped structure.

3. The brake hose connection structure for a crane according to claim 2, characterized in that: Both ends of the first hose and both ends of the two-way joint are quick-insertion joints; the quick-insertion joints enable the connecting end of the brake hose to be rotatably connected to the through-wall joint.

4. The brake hose connection structure for a crane according to claim 3, characterized in that: The quick-plug connector adopts a cannula quick-change connector.

5. The brake hose connection structure for a crane according to claim 1, characterized in that: The first hose is a hose with a length of 400-600 mm.

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