CN218093968U - Lever wheel-side brake - Google Patents

Abstract

A lever wheel-side brake comprises a mounting seat, brake arms and a push rod mechanism, wherein two ends of the mounting seat are connected with the two brake arms through pin shafts, one ends of the two brake arms are respectively connected with a fixed end of the push rod mechanism and a telescopic end of the push rod mechanism through pin shafts, the other ends of the two brake arms are connected with brake shoe assemblies through pin shafts, a gear transmission mechanism is connected with the push rod mechanism and clamps the two brake shoe assemblies on two sides of a driven wheel of a mobile loading and unloading crane device, the mounting seat is fixedly connected with a wheel seat of the driven wheel, the gear transmission mechanism drives the push rod mechanism to drive the brake shoe assemblies connected with the two brake arms to brake the driven wheel, the action stroke is reduced by improving the lever ratio, the brake failure of a simplifying mechanism is prevented, the rotating speed is reduced through a gear pair, the torque is increased, the inertia is reduced, the rated power of a motor is reduced by improving the reduction ratio, and the energy consumption is saved.

Description

Lever wheel edge brake

Technical Field

The utility model belongs to the technical field of the braking is prevent wind in the rail to removal loading and unloading hoist equipment wheel, a lever wheel limit stopper is related to.

Background

In order to prevent the wheels of the equipment from rolling on the track under the action of wind power, wheel-side brakes are generally arranged on wheel seats of driven wheels to improve braking force and achieve a good wind-resistant effect; the wheel-side brake mainly clamps the wheel through a clamp, and the friction plate which is tightly attached to the wheel generates friction force with the wheel, so that the braking effect is achieved.

The problems existing at present are that: when the wheel pressure of the crane equipment is more than 100T, the conventional mechanism is difficult to achieve the rated clamping force, meanwhile, the spring load is increased, the combination type is also complicated, and the failure risk exists after the crane equipment runs for a long time; secondly, need higher rated clamp force, motor load is very big and the energy consumption is very high, and overall structure is huge, is unfavorable for installation use and later maintenance.

Disclosure of Invention

The utility model aims to solve the technical problem that a lever wheel limit stopper is provided, adopt two brake arms of mount pad both ends round pin hub connection, the one end of two brake arms respectively with push rod mechanism's stiff end and flexible end pin hub connection, the other end of two brake arms all the round pin hub connection has the brake shoe subassembly, gear drive mechanism is connected with push rod mechanism, with two brake shoe subassembly centre gripping in the follow driving wheel both sides of removing handling crane equipment, the mount pad is connected fixedly with the wheel seat from the driving wheel, gear drive mechanism drives the brake shoe subassembly that two brake arms of push rod mechanism drive are connected and brakes from the driving wheel, through improving the lever ratio, reduce the action stroke, retrench the mechanism and prevent the braking inefficacy, reduce the rotational speed through the gear pair, increase torque, inertia, through improving the reduction ratio, reduce the rated power of motor, practice thrift the energy consumption.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a lever wheel edge brake comprises a mounting seat, a brake arm and a push rod mechanism; second shaft holes of the two brake arms are matched with pin shafts at two ends of the mounting seat, and first shaft holes are respectively connected with a fixed end and a telescopic end of the push rod mechanism through pin shafts; the ball screw of the push rod mechanism drives the ball parent body to rotate and move linearly, so that the brake arm swings around the mounting seat and drives the two brake shoe assemblies to get close to or away from each other.

The push rod cylinder of the push rod mechanism is connected with a gear box of the gear transmission mechanism, and the ball screw is connected with an output gear in the gear box.

The mounting seat is a flat plate, shaft sleeves are arranged at two ends of the flat plate, and a rib plate and ribs are arranged on one side of the flat plate; the rib plate is provided with a mounting hole.

The brake arm comprises a force arm connected with two sides of the fixing plate, and the first shaft hole, the second shaft hole and the third shaft hole respectively penetrate through the upper end, the middle part and the lower end of the force arm in the lateral direction; the distance between the first shaft hole and the second shaft hole is larger than the distance between the third shaft hole and the second shaft hole.

The third shaft hole on the force arm is connected with the brake shoe assembly; the brake shoe assembly comprises a tile and a hook-shaped spring which are connected with a tile seat, the tile seat is matched with the third shaft hole pin shaft, and the other end of the hook-shaped spring is connected with two sides of the mounting seat.

And an adjusting bolt is arranged on the fixed plate, and one end of the adjusting bolt is abutted against the end head of the mounting seat.

The gear transmission mechanism comprises a gear set in the gear box, an input gear of the gear set is connected with the output end of the motor, and an output gear of the gear set is connected with the ball screw; the number of teeth of the transition gear meshed with the input gear and the output gear is larger than that of the input gear and smaller than that of the output gear.

The push rod mechanism comprises a ball screw, a ball parent body and a disc spring in a push rod cylinder, the ball parent body is sleeved at one end of the ball screw and is in rolling fit with the ball screw, the disc spring is matched with the ball parent body, and the push rod is connected with the ball parent body and extends out of the push rod cylinder.

The push rod is a rod-shaped body, the diameter of a shaft head at one end of the rod body is larger than that of the rod body, and the shaft head is positioned in an annular groove in the inner wall of a cavity at the front end of the push rod cylinder and is limited by a clamp spring; the outer wall of the ball screw and the inner wall of the ball parent body are both provided with spiral grooves, and balls are arranged in the spiral grooves.

A pin shaft seat is arranged on a rod body of the push rod, the proximity switch is connected with the pin shaft seat and is positioned at the end part, close to the push rod cylinder, outside the push rod cylinder, and the first shaft hole is connected with the pin shaft seat through a pin shaft.

The utility model discloses a main beneficial effect lies in:

the brake arms at the two ends of the mounting seat are connected with the pin shafts, the brake shoe assemblies at one ends of the brake arms are connected with the pin shafts to form a lever structure, the thrust applied to the other ends of the brake arms enables the two brake shoe assemblies to be close to or far away from each other, and the brake shoe assemblies are used for clamping and moving the wheel edge of a driven wheel of the loading and unloading crane equipment, so that braking is achieved.

Because the distance between the first shaft hole and the second shaft hole is larger than the distance between the third shaft hole and the second shaft hole on the force arm, under the condition that the rated clamping force of the two brake shoe components, namely the resistance is not changed, the action stroke is reduced by improving the lever ratio, and the mechanism is favorable for simplifying and preventing brake failure.

The hook-shaped spring is connected with the mounting seat and the brake shoe assembly, when the brake shoe assembly acts, the hook-shaped spring deflects to one side and opens the hook opening, and after the action is finished, the brake shoe assembly is reset by the hook-shaped spring.

Because the number of teeth of the transition gear meshed with the input gear and the output gear of the gear set is larger than that of the input gear and smaller than that of the output gear, the rotating speed is reduced through the gear pair, the torque is increased, the inertia is reduced, the rated power of the motor is reduced through improving the reduction ratio, the energy consumption is saved, and the operation and maintenance risks are reduced.

The gear transmission mechanism is connected with the push rod mechanism, drives the push rod mechanism to drive the brake shoe assemblies connected with the two brake arms to brake the driven wheel, and is flexible in response and convenient to control.

The adjusting bolt that sets up on the brake arm is contradicted with the terminal surface of mount pad, through the adjustable brake shoe subassembly of adjusting bolt, makes two tiles of following driving wheel both sides and the clearance between the wheel limit equal to stability when improving the braking.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic front view of fig. 1.

Fig. 3 is a left side view of fig. 2.

Fig. 4 is a schematic structural diagram of the mounting seat of the present invention.

Fig. 5 is a schematic structural view of the brake arm of the present invention.

Fig. 6 is a schematic structural view of the brake shoe assembly of the present invention.

Fig. 7 is a schematic structural view of the connection between the gear transmission mechanism and the push rod mechanism of the present invention.

Fig. 8 is a top view of fig. 7.

Fig. 9 isbase:Sub>A schematic cross-sectional view atbase:Sub>A-base:Sub>A of fig. 8.

Fig. 10 is a schematic structural diagram of the gear box and the interior of the push rod cylinder according to the present invention.

In the figure: the brake device comprises a mounting base 1, a shaft sleeve 11, a mounting hole 12, a brake arm 2, a first shaft hole 21, a second shaft hole 22, a third shaft hole 23, a brake shoe assembly 24, a tile 25, a hook spring 26, an adjusting bolt 27, a gear transmission mechanism 3, a gear box 31, a gear set 32, a motor 33, a push rod mechanism 4, a push rod cylinder 41, a ball screw 42, a ball parent body 43, a disc spring 44, a push rod 45 and a proximity switch 46.

Detailed Description

As shown in fig. 1 to 10, a lever wheel-side brake comprises a mounting base 1, a brake arm 2 and a push rod mechanism 4; second shaft holes 22 of the two brake arms 2 are matched with pin shafts at two ends of the mounting seat 1, and first shaft holes 21 are respectively connected with a fixed end and a telescopic end of the push rod mechanism 4 through pin shafts; the ball screw 42 of the push rod mechanism 4 drives the ball parent body 43 to do linear motion in a rotating way, so that the brake arm 2 swings around the mounting seat 1, and the two brake shoe assemblies 24 are driven to approach or move away from each other. When the brake shoe assembly is used, the two brake shoe assemblies 24 are clamped on two sides of a driven wheel of a mobile loading and unloading crane device, the mounting seat 1 is fixedly connected with a wheel seat of the driven wheel, the gear transmission mechanism 3 drives the push rod mechanism 4 to drive the brake shoe assemblies 24 connected with the two brake arms 2 to brake the driven wheel, the action stroke is reduced by improving the lever ratio, the mechanism is simplified to prevent failure, the rotating speed is reduced by a gear pair, the torque is increased, the inertia is reduced, the reduction ratio is improved, the rated power of the motor 33 is reduced, and the energy consumption is saved.

In a preferred scheme, the device further comprises a gear transmission mechanism 3, a push rod cylinder 41 of the push rod mechanism 4 is connected with a gear box 31 of the gear transmission mechanism 3, and a ball screw 42 is connected with an output gear in the gear box 31. In use, the gear transmission 3 drives the ball screw 42 to rotate.

In a preferred scheme, the mounting seat 1 is a flat plate, shaft sleeves 11 are arranged at two ends of the flat plate, and a rib plate and ribs are arranged on one side of the flat plate; the rib plate is provided with a mounting hole 12. During installation, the pin shaft penetrates through the shaft sleeve 11 and the second shaft hole 22 on the brake arm 2 to be connected with the shaft sleeve, and the installation hole 12 is fixedly connected with a wheel seat of a driven wheel of the mobile loading and unloading crane equipment.

In a preferable scheme, the brake arm 2 comprises force arms connected with two sides of the fixing plate, and the first shaft hole 21, the second shaft hole 22 and the third shaft hole 23 respectively penetrate through the upper end, the middle part and the lower end of the force arms in the lateral direction; the distance between the first shaft hole 21 and the second shaft hole 22 is larger than the distance between the third shaft hole 23 and the second shaft hole 22. When the lever structure is used, the second shaft hole 22 is used as a fulcrum to form a lever structure, the moment arm between the second shaft hole 22 and the first shaft hole 21 is a power arm, and the moment arm between the second shaft hole 22 and the third shaft hole 23 is a resistance arm.

Preferably, because the distance between the first shaft hole 21 and the second shaft hole 22 on the force arm is greater than the distance between the third shaft hole 23 and the second shaft hole 22, under the condition that the rated clamping force, namely the resistance, of the two brake shoe assemblies 24 is not changed, the action stroke is reduced by improving the lever ratio, and the mechanism is simplified to prevent brake failure.

Preferably, the formula of the lever principle is: power x power arm = resistance x resistance arm, decreasing resistance arm while increasing power arm under rated clamping force, i.e. resistance, of the brake shoe assembly 24 is unchanged.

In a preferable scheme, a third shaft hole 23 on the force arm is connected with a brake shoe assembly 24; the brake shoe assembly 24 comprises a shoe 25 and a hook spring 26 which are connected with a shoe seat, the shoe seat is in pin fit with the third shaft hole 23, and the other end of the hook spring 26 is connected with two sides of the mounting seat 1. When the brake shoe assembly 24 is opened after braking, the hook springs 26 pull the brake shoe assembly 24 to reset so as to avoid the contact with the rim of the driven wheel.

In a preferable scheme, an adjusting bolt 27 is arranged on the fixing plate, and one end of the adjusting bolt 27 is abutted against the end head of the mounting seat 1. During the use, make its end contradict with the end of mount pad 1 through rotatory adjusting bolt 27 to adjust the distance between two brake shoe subassemblies 24, and make the wheel limit of following the driving wheel both sides and the distance between two brake shoe subassemblies 24's tile 25 unanimous, make at the rotation in-process, two tiles 25 can be simultaneously with the wheel limit contact, stability when having improved the braking.

In a preferred scheme, the gear transmission mechanism 3 comprises a gear set 32 in a gear box 31, an input gear of the gear set 32 is connected with an output end of a motor 33, and an output gear is connected with a ball screw 42; the number of teeth of the transition gear meshed with the input gear and the output gear is larger than that of the input gear and smaller than that of the output gear. When the motor is used, the number of teeth of the transition gear meshed with the input gear and the output gear of the gear set 32 is larger than that of the input gear and smaller than that of the output gear, so that the rotating speed is reduced through the gear pair, the torque is increased, the inertia is reduced, the rated power of the motor 33 is reduced through improving the reduction ratio, the energy consumption is saved, and the operation and maintenance risks are reduced.

The working principle of the gear transmission mechanism 3 is as follows: the motor 33 drives the gear set 32 to drive the ball screw 42 to rotate, and in the working process of the gear set 32, the rotating speed is reduced for the first time through the transition gear, the rotating speed is reduced for the second time through the output gear, so that the rotating speed of the ball screw 42 is further reduced, the torque is increased, and the inertia is reduced.

In a preferred scheme, the push rod mechanism 4 comprises a ball screw 42, a ball parent body 43 and a disc spring 44 in the push rod cylinder 41, wherein the ball parent body 43 is sleeved at one end of the ball screw 42 and is in rolling fit with the ball screw, the disc spring 44 is matched with the ball parent body 43, and the push rod 45 is connected with the ball parent body 43 and extends out of the push rod cylinder 41. When in use, the ball screw 42 rotates to drive the ball parent body 43 to rotate and simultaneously make linear motion.

In the preferred scheme, the push rod 45 is a rod-shaped body, the diameter of a shaft head at one end of the rod body is larger than that of the rod body, and the shaft head is positioned in an annular groove in the inner wall of a cavity at the front end of the push rod cylinder 41 and limited by a clamp spring; the outer wall of the ball screw 42 and the inner wall of the ball parent body 43 are both provided with spiral grooves, and balls are arranged in the spiral grooves. During installation, the spindle nose of one end of the push rod 45 is located in the annular groove of the push rod cylinder 41, so that the spindle nose cannot be separated from the annular groove and can rotate in the annular groove, the push rod 45 is radially limited after the push rod 45 is connected with the brake arm 2, the push rod 45 is prevented from being driven to rotate when the ball parent body 43 rotates, only the push rod 45 can move linearly, and the stability of the push rod 45 during movement is improved.

Preferably, the end of the ball screw 42 located in the ball parent body 43 is provided with a shaft head limiting block, the shaft head limiting block is in sliding fit with a shaft neck recessed in the ball screw 42, and the shaft head limiting block and the shaft head of the push rod 45 limit the stroke of the ball parent body 43.

Preferably, the end of the cavity of the push rod cylinder 41 is provided with a disc spring gland, the disc spring gland is connected with the gear box 31, and two ends of the disc spring 44 are respectively abutted against a shaft shoulder of the ball parent body 43 and the disc spring gland, so as to form a pretightening force; during the expansion and contraction of the ball parent body 43, the disc spring 44 is compressed or expanded.

In a preferable scheme, a pin shaft seat is arranged on a rod body of the push rod 45, the proximity switch 46 is connected with the pin shaft seat and is positioned outside the push rod cylinder 41 and close to the end of the push rod cylinder 41, and the first shaft hole 21 is connected with the pin shaft seat through a pin shaft. When in use, the pin shaft seat is locked and fixed on the rod body of the push rod 45 by adopting a lock washer and a nut and is connected with a first shaft hole 21 on the force arm through a pin shaft; when the device is installed, the proximity switch 46 and the motor 33 are electrically connected with the vehicle-mounted control system, the proximity switch 46 senses the distance between the proximity switch 46 and the end of the push rod cylinder 41, the vehicle-mounted control system receives a sensing signal of the proximity switch 46, and when the distance is within or outside a threshold range set by the vehicle-mounted control system, the vehicle-mounted control system controls the motor 33 to stop or start and controls the motor 33 to rotate forwards or backwards; when the motor 33 rotates in the forward direction or the reverse direction, the ball parent body 43 extends or resets, thereby driving the two brake shoe assemblies 24 on the brake arm 2 to move close to or away from each other.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the equivalents of the technical features in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims (10)

1. A lever wheel edge brake is characterized in that: the brake device comprises a mounting seat (1), a brake arm (2) and a push rod mechanism (4); second shaft holes (22) of the two brake arms (2) are matched with pin shafts at two ends of the mounting seat (1), and first shaft holes (21) are respectively connected with a fixed end and a telescopic end of the push rod mechanism (4) through pin shafts; the ball screw (42) of the push rod mechanism (4) drives the ball parent body (43) to rotate and move linearly, so that the brake arm (2) swings around the mounting seat (1) and drives the two brake shoe assemblies (24) to move close to or away from each other.

2. The lever wheel-edge brake of claim 1, wherein: the push rod mechanism is characterized by further comprising a gear transmission mechanism (3), a push rod cylinder (41) of the push rod mechanism (4) is connected with a gear box (31) of the gear transmission mechanism (3), and a ball screw (42) is connected with an output gear in the gear box (31).

3. The lever wheel-edge brake of claim 1, wherein: the mounting seat (1) is a flat plate, shaft sleeves (11) are arranged at two ends of the flat plate, and a rib plate and ribs are arranged on one side of the flat plate; the rib plate is provided with a mounting hole (12).

4. The lever wheel-edge brake of claim 1, wherein: the brake arm (2) comprises force arms connected with two sides of the fixing plate, and a first shaft hole (21), a second shaft hole (22) and a third shaft hole (23) respectively penetrate through the upper end, the middle part and the lower end of each force arm in the lateral direction; the distance between the first shaft hole (21) and the second shaft hole (22) is larger than the distance between the third shaft hole (23) and the second shaft hole (22).

5. The lever wheel-side brake of claim 4, wherein: the third shaft hole (23) on the force arm is connected with a brake shoe component (24); the brake shoe assembly (24) comprises a tile (25) and a hook-shaped spring (26), the tile seat is connected with the third shaft hole (23) through a pin shaft, and the other end of the hook-shaped spring (26) is connected with two sides of the mounting seat (1).

6. The lever wheel-side brake of claim 4, wherein: and an adjusting bolt (27) is arranged on the fixing plate, and one end of the adjusting bolt (27) is abutted against the end of the mounting seat (1).

7. The lever wheel-edge brake of claim 2, wherein: the gear transmission mechanism (3) comprises a gear set (32) in the gear box (31), an input gear of the gear set (32) is connected with the output end of the motor (33), and an output gear is connected with the ball screw (42); the number of teeth of the transition gear meshed with the input gear and the output gear is larger than that of the input gear and smaller than that of the output gear.

8. The lever wheel-side brake of claim 1, wherein: the push rod mechanism (4) comprises a ball screw (42), a ball parent body (43) and a disc spring (44) which are arranged in a push rod cylinder (41), the ball parent body (43) is sleeved at one end of the ball screw (42) and is in rolling fit with the ball screw, the disc spring (44) is matched with the ball parent body (43), and the push rod (45) is connected with the ball parent body (43) and extends out of the push rod cylinder (41).

9. The lever wheel-edge brake of claim 8, wherein: the push rod (45) is a rod-shaped body, the diameter of a shaft head at one end of the rod body is larger than that of the rod body, and the shaft head is positioned in an annular groove in the inner wall of a cavity at the front end of the push rod cylinder (41) and limited by a clamp spring; the outer wall of the ball screw (42) and the inner wall of the ball parent body (43) are both provided with spiral grooves, and balls are arranged in the spiral grooves.

10. The lever wheel-side brake of claim 8, wherein: a pin shaft seat is arranged on a rod body of the push rod (45), the proximity switch (46) and the pin shaft seat are connected and located at the end, close to the push rod cylinder (41), outside the push rod cylinder (41), and the first shaft hole (21) is connected with the pin shaft seat through a pin shaft.

Images