Wedge type brake

Abstract

The utility model discloses a wedge type brake which comprises a machine frame, a driver and a wedge block, the driver is fixed on the machine frame, the driver comprises a push rod, and an installation seat is fixedly arranged at the end portion of the push rod. The mounting base is provided with a through hole, a follow-up rod is arranged in the through hole in a penetrating mode, one end of the follow-up rod is hinged to the wedge block, and the follow-up rod is provided with a stop which cannot penetrate through the through hole; the wedge block is hinged to the installation base, the hinge point of the wedge block and the installation base is a first hinge point, the hinge point of the wedge block and the follow-up rod is a second hinge point, and the second hinge point is higher than the first hinge point. The structure is simplified, self-adaptive swinging of the wedge block can be achieved, and the wedge block can be placed between a wheel and a track easily.

Description

Technical Field

[0001] The utility model relates to a wedge brake, belonging to the technical field of crane braking technology. Background Art

[0002] At present, the electric wind-proof iron wedge mainly uses an electro-hydraulic thruster as a driving device, and the main application object is the rail crane. For example, the utility model with the publication number CN201071252Y discloses a wedge wheel stopper, which uses an electro-hydraulic thruster as a driver to drive structures such as a rocker arm, a connecting rod, and a swing rod to realize the lowering and lifting of the wedge block. The structure is relatively complex, prone to failure, and has a high maintenance cost. Therefore, it is necessary to design a wedge brake with a simple structure and easy maintenance. Content of the Utility Model

[0003] In order to overcome the problems existing in the prior art, the utility model provides a wedge brake, and the specific technical solution is as follows.

[0004] A wedge brake includes a frame, a driver, and a wedge block. The driver is fixed to the frame. It is characterized in that: the driver includes a push rod, and an installation seat is fixedly arranged at the end of the push rod;

[0005] The installation seat has a through hole, a follower rod is penetrated through the through hole, one end of the follower rod is hinged to the wedge block, and a stop that cannot pass through the through hole is arranged at the other end of the follower rod;

[0006] The wedge block is hinged to the installation seat. The hinge point between the wedge block and the installation seat is the first hinge point, and the hinge point between the wedge block and the follower rod is the second hinge point. The second hinge point is higher than the first hinge point.

[0007] Adopting the above technical solution, the follower rod can move relative to the installation seat, and the wedge block can swing relative to the installation seat around the first hinge point within a certain angle range; the structure of the wedge brake is simplified, and it can be more accurately placed between the wheel and the track (or the ground).

[0008] Further, a compression spring is sleeved on the follower rod. One end of the compression spring abuts against the installation seat, and the other end abuts against the follower rod. The compression spring is used to apply an elastic force to the wedge block to make the wedge block swing downward. The compression spring can apply an elastic force to the wedge block to swing downward, ensuring that the wedge block is in the position of swinging downward after being lifted.

[0009] Further, the driver is a linear driver for driving the push rod to do linear motion. Preferably, the linear driver includes a screw pair transmission mechanism, a gear rack pair transmission mechanism, or a worm gear pair transmission mechanism.

[0010] Furthermore, the driver further includes a motor and a manual runner, and the manual runner is coaxially and fixedly arranged with the main shaft of the motor or the high-speed shaft of the gearbox. When the motor fails or there is a power outage, the position of the wedge block can be adjusted by the manual runner.

[0011] Furthermore, the follower rod is a screw rod, and the stopper is a nut threadedly connected to the follower rod. Using a nut as the stopper facilitates adjusting the position of the stopper and controlling the swing angle of the wedge block.

[0012] Compared with the prior art, the utility model simplifies the structure; by adjusting the position of the stopper, the swing angle of the wedge block can also be controlled, enabling the self-adaptive swing of the wedge block, which is beneficial to accurately placing the wedge block between the wheel and the track (or the ground). Description of the Drawings

[0013] Figure 1 is a schematic diagram of the wedge brake according to Embodiment 1 of the utility model (the wedge block is in the lowered state);

[0014] Figure 2 is a schematic diagram of the wedge brake according to Embodiment 1 of the utility model (the wedge block is in the lifted state);

[0015] Figure 3 is a schematic diagram of the wedge brake according to Embodiment 2 of the utility model (the wedge block is in the lowered state).

[0016] In the figure: frame 1, driver 2, wedge block 3, mounting seat 4, follower rod 5, stopper 6, track 7, wheel 8, compression spring 9, push rod 2.1, motor 2.2, manual runner 2.3, transmission mechanism 2.4, first hinge point A, second hinge point B. Detailed Embodiment

[0017] The following further describes the utility model in detail with reference to the drawings.

[0018] Embodiment 1

[0019] Refer to Figure 1 - Figure 2, A wedge brake, comprising a frame 1, a driver 2 and a wedge block 3. The driver 2 is fixed to the frame 1. The driver 2 includes a push rod 2.1, and a mounting seat 4 is fixedly arranged at the end of the push rod 2.1; the mounting seat 4 has a through hole (not shown), and a follower rod 5 is arranged through the through hole. One end of the follower rod 5 is hinged to the wedge block 3, and a stop 6 that cannot pass through the through hole is arranged at the other end of the follower rod 5; the wedge block 3 is hinged to the mounting seat 4, and the hinge point of the wedge block 3 and the mounting seat 4 is the first hinge point A, and the hinge point of the wedge block 3 and the follower rod 5 is the second hinge point B, and the second hinge point B is higher than the first hinge point A. Among them, the through hole provided in the mounting seat 4 allows the follower rod 5 to swing to a certain extent. For example, the hole shape of the through hole is a strip hole or the aperture of the through hole is slightly larger than the outer diameter of the follower rod 5.

[0020] Preferably, the driver 2 is a linear driver for driving the push rod 2.1 to perform a linear motion. Preferably, the linear driver 2 includes a motor 2.2 and a transmission mechanism 2.4. The transmission mechanism includes a screw pair transmission mechanism, a gear rack pair transmission mechanism or a worm gear pair transmission mechanism. Among them, the screw pair transmission mechanism can be a lead screw nut mechanism, which can convert the rotational motion of the motor 2.2 into the linear motion of the push rod 2.1; the gear rack pair transmission mechanism is a gear rack mechanism, which can convert the rotational motion of the motor 2.2 into the linear motion of the push rod 2.1 (the push rod is fixedly connected to the rack); the worm gear pair transmission mechanism (such as a wrench uses a worm gear pair transmission mechanism) can also convert the rotational motion of the motor 2.2 into the linear motion of the push rod 2.1. It should be noted that a gearbox (not shown) can also be provided between the motor 2.2 and the transmission mechanism to reduce the rotational speed output by the motor 2.2. In short, the driver 2 is a prior art as long as it can drive the push rod 2.1 to perform a linear motion.

[0021] Preferably, the driver 2 further includes a manual rotating wheel 2.3, and the manual rotating wheel 2.3 is coaxially and fixedly arranged with the main shaft of the motor 2.2 or the high-speed shaft of the gearbox. When the motor fails or there is a power outage, the push rod 2.1 can be driven to perform a linear motion by manually rotating the manual rotating wheel 2.3, so as to adjust the position of the wedge block 3.

[0022] Preferably, the follower rod 5 is a screw rod, and the stop 6 is a nut threadedly connected to the follower rod 5. Using a nut as the stop 6 facilitates adjusting the position of the stop 6 and controlling the swing angle of the wedge block 3.

[0023] The working principle of the wedge brake is as follows: When the wedge brake is installed on a crane, the push rod 2.1 is inclined relative to the vertical direction and faces between the track 7 (or the ground) and the wheel 8. As Figure 2 shown, when the wedge block 3 is in the lifted state, the wedge block 3 is in the limit position of swinging downward (counterclockwise) under the action of gravity. At this time, the stop 6 abuts against the mounting seat 4 (as Figure 2As shown, the stopper 6 limits the swing angle of the wedge block 3. When it is necessary to lower the wedge block 3, the driver 2 drives the push rod 2.1 to move obliquely downward. The push rod 2.1 drives the mounting seat 4 and the wedge block 3 to move between the track 7 and the wheel 8. The wedge block 3 is generally triangular, and the tip of the wedge block 3 first touches the track 7 (or the ground). As the push rod 2.1 continues to move, the wedge block 3 swings upward (clockwise) around the first hinge point A until the lower surface of the wedge block 3 is completely in contact with the track 7 (or the ground), completing the lowering action of the wedge block 3. At this time, the wedge block 3 plays a role of preventing the wheel from slipping accidentally. When it is necessary to lift the wedge block 3, the driver 2 drives the push rod 2.1 to move obliquely upward, so as to lift the wedge block 3 away from the track 7 (or the ground).

[0024] Embodiment 2

[0025] See Figure 3 , different from Embodiment 1, a compression spring 9 is sleeved on the follower rod 5 in Embodiment 2. One end of the compression spring 9 abuts against the mounting seat 4, and the other end abuts against the follower rod 5 (that is, the compression spring 9 can directly apply elastic force to the follower rod 5, and the compression spring 9 can abut against any component fixed to the follower rod 5). The stopper 6 and the compression spring 9 are respectively located on both sides of the through hole of the mounting seat 4, and the compression spring 9 applies an elastic force to the follower rod 5 in the moving direction of the wedge block 3. That is, the compression spring 9 is used to apply an elastic force to the wedge block 3 to make the wedge block 3 (the tip of the wedge block 3) swing downward, preventing the follower rod 5 from being stuck and unable to move due to foreign objects or rust, and ensuring that the wedge block 3 is in a position of swinging downward after being lifted.

[0026] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments of the present invention can be combined with each other. The present invention is not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose and scope protected by the claims of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A wedge brake, comprising a frame (1), a driver (2) and a wedge block (3), wherein the driver (2) is fixed to the frame (1), and is characterized in that: The driver (2) includes a push rod (2.1), and a mounting seat (4) is fixedly arranged at the end of the push rod (2.1); The mounting seat (4) has a through hole, and a follower rod (5) is arranged through the through hole. One end of the follower rod (5) is hinged to the wedge block (3), and a stop (6) that cannot pass through the through hole is arranged on the follower rod (5); The wedge block (3) is hinged to the mounting seat (4). The hinge point of the wedge block (3) and the mounting seat (4) is the first hinge point (A), and the hinge point of the wedge block (3) and the follower rod (5) is the second hinge point (B).

2. The wedge brake according to claim 1, characterized in that, A compression spring (9) is sleeved on the follower rod (5). The stop (6) and the compression spring (9) are respectively located on both sides of the through hole of the mounting seat (4). One end of the compression spring (9) abuts against the mounting seat (4), and the other end abuts against the follower rod (5). The compression spring (9) is used to apply an elastic force to the wedge block (3) to make the wedge block (3) swing downward.

3. A wedge brake according to claim 1, characterized in that, The driver (2) is a linear driver (2) for driving the push rod (2.1) to perform linear motion.

4. The wedge brake according to claim 3, characterized in that, The linear driver (2) includes a screw pair transmission mechanism, a gear rack pair transmission mechanism or a worm and worm gear pair transmission mechanism.

5. A wedge brake according to claim 4, wherein, The driver (2) further includes a motor (2.2) and a manual rotating wheel (2.3), and the manual rotating wheel (2.3) is coaxially and fixedly arranged with the main shaft of the motor (2.2) or the high-speed shaft of the gearbox.

6. The wedge brake according to claim 1, characterized in that, The follower rod (5) is a screw rod, and the stop (6) is a nut threadedly connected to the follower rod (5).

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