Brake device of reduction gearbox

Abstract

The utility model discloses a reduction gearbox braking device in the technical field of braking mechanisms, and aims to solve the problem that in the prior art, the braking action is realized by directly limiting the walking of wheels and only can be realized by large torque, so that the operating force required by a handle is too large. The brake device comprises a brake mechanism which comprises a brake disc, the brake disc is fixedly connected with an input shaft assembly of the reduction gearbox, and a brake assembly is arranged on the outer wall of the reduction gearbox and located on one side of the brake disc. A plurality of fixing bolts are arranged on one side of the outer wall of the reduction gearbox, the outer walls of the fixing bolts are sleeved with two positioning nuts, and the brake assembly comprises a first base and a second base; the brake disc is braked through the first base and the second base, and the brake disc is connected with the input shaft assembly of the reduction gearbox, so that the whole vehicle is braked, the operating force required for braking the handle is greatly reduced, and larger braking torque is provided for the whole vehicle.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of brake devices of reduction gearbox, belong to brake mechanism technical field. BACKGROUND

[0002] 5-10 tons counterbalance forklift due to cost problem, the parking brake mode of 5-10 tons counterbalance forklift in current market mostly adopts the form of mechanical cable arrangement.But 5-10 tons counterbalance forklift due to the whole vehicle mass and load are much more than 2-4 tons small tonnage forklift, so parking brake if still according to the way of 2-4 tons forklift, arrangement in driving axle two sides, the operating force of hand brake handle will be very big, close to even more than 300N.The operating force of hand brake handle of existing forklift parking brake scheme arrangement in driving axle two sides will be very big, close to even more than 300N.There is the risk of exceeding preset requirement, and driver operating feeling will be very laborious.

[0003] The brake scheme of existing counterbalance forklift is usually distributed in driving axle two sides, parking brake position is at the end of entire transmission system, brake action is directly limiting the travel of wheel to realize parking brake, needs very big torque to realize, leading to the operating force required for handlebar is too big, impact actual brake effect. SUMMARY

[0004] The utility model aims at overcoming the insufficient in prior art, provide a kind of brake device of reduction gearbox, solve the brake scheme of existing counterbalance forklift and usually distribute in driving axle two sides, parking brake position is at the end of entire transmission system, brake action is directly limiting the travel of wheel to realize parking brake, needs very big torque to realize, leading to the operating force required for handlebar is too big problem.

[0005] To solve the above technical problems, the utility model is realized by adopting the following technical scheme:

[0006] The utility model provides a kind of brake device of reduction gearbox, including brake mechanism, the brake mechanism includes brake disc, the brake disc is fixedly connected with the input shaft component of reduction gearbox, brake assembly is equipped on the one side of brake disc of reduction gearbox outer wall;

[0007] The outer wall of the plurality of fixed bolts is equipped with two locating nuts, the brake assembly includes first base and second base, the first base and the second base are slidably connected with the plurality of fixed bolts, the first base and the second base are located between the two locating nuts, a return plate spring is arranged between the first base and the second base, a driving mechanism is arranged on the one side of the outer wall of the first base, for pushing the first base and the second base to be close to each other.

[0008] Further, the first base and the second base outer wall is close to the side of the brake disc is equipped with brake friction plate.

[0009] Further, the drive mechanism includes a brake rocker, the first base and the second base inner side is equipped with the same sliding connection slide rod, the slide rod one end to the second base side is equipped with the first and the bolt, the slide rod the other end to the first base side is equipped with the second and the bolt, the brake rocker is set on the slide rod outer wall and is located between the first base and the second and the bolt, the brake rocker outer wall is rotationally connected with the cable, the brake rocker outer wall is equipped with extrusion mechanism, when the cable drives the brake rocker rotates, the extrusion mechanism is used to push the first base and the second base is close to each other.

[0010] Further, the return plate spring is provided with an opening for passing through the slide rod.

[0011] Further, the first base outer wall one side is detachably connected with the mounting plate, and the cable is fixedly connected with the mounting plate.

[0012] Further, the mounting plate outer wall one side is equipped with support column, and the support column is elastically connected with the brake rocker through return spring.

[0013] Further, the extrusion mechanism includes a fixed block arranged on the first base outer wall one side, the fixed block is coaxially arranged with the brake rocker, a plurality of steel balls are uniformly arranged on the fixed block outer wall one side of the brake rocker, and an inclined groove is formed on the brake rocker outer wall one side of the steel ball.

[0014] Further, the first base and the second base are provided with an elastic rubber block, and the elastic rubber block is sleeved on the outside of the fixed bolt.

[0015] Compared with the prior art, the beneficial effects achieved by the utility model are as follows:

[0016] 1、 the brake device of the reduction gearbox, brake to the brake disc through the first base and the second base, the brake disc is connected with the input shaft assembly of the reduction gearbox, so as to brake the whole vehicle, so as to greatly reduce the operation force required when handle braking, and provide greater brake torque for the whole vehicle, ensure the brake effect of the whole vehicle;

[0017] 2、The deceleration box brake device, in the process that the first base and the second base are close to and away from each other, the positioning nut only plays a blocking role for the first base and the second base, the first base and the second base are movable on the fixing bolt, both can freely act to clamp, any side positioning nut can be disassembled, so that the corresponding first base or second base can be repaired and replaced, compared with the built-in brake installed on the two sides of the drive axle, the convenience of maintenance and adjustment is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of a brake mechanism according to an embodiment of the present application;

[0019] Figure 2 is a three-dimensional structural schematic diagram of a deceleration box brake device according to an embodiment of the present application;

[0020] Figure 3 is a three-dimensional structural schematic diagram of a brake mechanism according to an embodiment of the present application when the mounting plate is removed;

[0021] Figure 4 is a partial cross-sectional schematic diagram of a brake mechanism according to an embodiment of the present application.

[0022] In the figure: 1, deceleration box; 2, brake mechanism; 21, input shaft assembly; 22, brake disc; 23, brake assembly; 24, fixing bolt; 25, mounting plate; 26, brake rocker arm; 27, return spring; 28, first base; 29, second clamping bolt; 30, return plate spring; 31, brake friction plate; 32, second base; 33, positioning nut; 34, fixed block; 35, sliding rod; 36, cable; 37, support column; 38, steel ball; 39, elastic rubber block; 40, first clamping bolt. DETAILED DESCRIPTION

[0023] The present application will be further described below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and cannot limit the protection scope of the present application.

[0024] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0025] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0026] As shown in Figures 1-3 The utility model provides a brake device of reduction gearbox, including brake mechanism 2, brake mechanism 2 includes brake disc 22, brake disc 22 with the fixed connection of input shaft assembly 21 of reduction gearbox 1, the brake assembly 23 of reduction gearbox 1 outer wall is equipped with on brake disc 22 one side, reduction gearbox 1 outer wall one side is equipped with a plurality of fixed bolt 24, the fixed bolt 24 outer wall is equipped with two locating nuts 33, brake assembly 23 includes first base 28 and second base 32, first base 28 and second base 32 are all with a plurality of fixed bolt 24 sliding connection, first base 28 and second base 32 are all located between two locating nuts 33, first base 28 and second base 32 are equipped with return plate spring 30, first base 28 outer wall one side is equipped with drive mechanism, for pushing first base 28 and second base 32 mutually close.

[0027] Specifically, when braking work is needed for the balanced forklift, the driving mechanism is controlled to start working, thereby driving the first base 28 and the second base 32 to move towards each other, so that both move towards the brake disc 22, and when both are in contact with the brake disc 22, braking work is performed on the brake disc 22, and when the driving mechanism stops working, the return plate spring 30 can push the first base 28 and the second base 32 to return to the original position, so that both are no longer in contact with the brake disc 22, and the braking work on the brake disc 22 is cancelled; the first base 28 and the second base 32 brake the brake disc 22 in the application, the brake disc 22 is sleeved outside the input shaft assembly 21 of the reduction box 1 through the locking nut, thereby braking the whole vehicle, thereby greatly reducing the operating force required when the handle brakes, providing greater braking torque for the whole vehicle, and ensuring the braking effect of the whole vehicle; when the driving mechanism pushes the first base 28 and the second base 32 to move towards each other, the fixed bolt 24 supports and guides the first base 28 and the second base 32, and the two positioning nuts 33 block the first base 28 and the second base 32, when the first base 28 moves close to the second base 32, the return plate spring 30 is compressed at this time, and when the limiting work of the brake disc 22 is completed, the return plate spring 30 can push both to return to the original position for the next braking work; during the process of the first base 28 and the second base 32 moving towards each other and away from each other, the positioning nut 33 only blocks the first base 28 and the second base 32, and the first base 28 and the second base 32 are movable on the fixed bolt 24, both can freely act to clamp, and by disassembling any side positioning nut 33, the corresponding first base 28 or second base 32 can be repaired and replaced, compared with the built-in brake installed on both sides of the drive axle, the convenience of maintenance and adjustment is greatly improved; optionally, the first base 28 and the second base 32 are provided with brake friction plates 31 on the outer wall close to the side of the brake disc 22, the first base 28 and the second base 32 are in contact with the brake disc 22 through the brake friction plates 31, the friction force when in contact is increased, and the braking effect on the brake disc 22 is ensured.

[0028] One embodiment, brake disc 22 is set in the input shaft rear end of the reduction gearbox 1, namely the input shaft assembly 21 side, assuming that the brake disc 22 can provide a braking torque of 100Nm, according to the current conventional forklift reduction ratio of 30 to calculate, can provide the vehicle with a parking brake torque of 100*30=3000Nm; and the same brake torque brake if set at both ends of the drive axle, only to provide the vehicle 100*2=200Nm brake torque. So when the whole vehicle needs the same braking torque, the brake mechanism 2 set in the input end of the reduction gearbox 1, as long as the drive axle wheel edge position brake mechanism 2 provides 1 / 15 of the brake torque; alternatively, the brake disc 22 and the input shaft assembly 21 are connected and fixed by welding or key connection, so as to brake the input box 1.

[0029] As Figures 1-4 shown, one embodiment, the drive mechanism includes a brake rocker arm 26, the first base 28 and the second base 32 inside is provided with the same sliding connection slide rod 35, one end of the slide rod 35 is provided with a first clamp bolt 40 on the side of the second base 32, the other end of the slide rod 35 is provided with a second clamp bolt 29 on the side of the first base 28, the brake rocker arm 26 is sleeved on the outer wall of the slide rod 35 and located between the first base 28 and the second clamp bolt 29, the outer wall of the brake rocker arm 26 is rotatably connected with a cable 36, the outer wall of the brake rocker arm 26 is provided with an extrusion mechanism, when the cable 36 drives the brake rocker arm 26 to rotate, the extrusion mechanism is used to push the first base 28 and the second base 32 to approach each other, the outer wall of the first base 28 is detachably connected with a mounting plate 25, the cable 36 is fixedly connected with the mounting plate 25, the outer wall of the mounting plate 25 is provided with a support column 37, the support column 37 is elastically connected with the brake rocker arm 26 through a return spring 27, the extrusion mechanism includes a fixed block 34 provided on the outer wall of the first base 28, the fixed block 34 is coaxially arranged with the brake rocker arm 26, a plurality of steel balls 38 are uniformly arranged on the outer wall of the fixed block 34 on the side of the brake rocker arm 26, and an inclined groove is formed in the outer wall of the brake rocker arm 26 on the side of the steel ball 38.

[0030] Specifically, when the first base 28 and the second base 32 need to be pushed close to each other, at this time, the pull rope 36 starts to work, drives the brake rocker arm 26 to rotate, the return spring 27 is elongated, at this time, the brake rocker arm 26 rotates relative to the fixed block 34, the inclined groove (not shown in the figure) moves with the brake rocker arm 26, so that the relative position of the inclined groove and the steel ball 38 changes, the steel ball 38 rolls along the inclined groove, moves from the deeper position in the inclined groove to the shallower position in the inclined groove, thereby pushing the brake rocker arm 26 and the fixed block 34 away from each other, since the both ends of the slide rod 35 are provided with the first and second locking bolts 40 and 29, the first base 28, the second base 32, the fixed block 34 and the brake rocker arm 26 are all sleeved on the outer wall of the slide rod 35, the first locking bolt 40 abuts against the outer wall of the second base 32, the second locking bolt 29 abuts against the outer wall of the brake rocker arm 26, the distance between the second locking bolt 29 and the first locking bolt 40 is unchanged, when the brake rocker arm 26 and the fixed block 34 move away from each other, at this time, the fixed block 34 pushes the first base 28 and the second base 32 close to each other, the return plate spring 30 is clamped, the distance between the two brake friction plates 31 becomes smaller, and the brake friction plates 31 contact the brake disc 22, thereby realizing the braking work of the brake disc 22; after the pull rope 36 is loosened, at this time, the return spring 27 on the support column 37 can pull the brake rocker arm 26 to rotate to the original position, and the return plate spring 30 can push the first base 28 and the second base 32 to return to the original position.

[0031] As shown in Figures 1-3 An embodiment, the return plate spring 30 is provided with an opening hole for passing through the slide rod 35, and the slide rod 35 supports the return plate spring 30.

[0032] An embodiment, the first base 28 and the second base 32 are provided with an elastic rubber block 39, the elastic rubber block 39 is sleeved on the outside of the fixed bolt 24, when the first base 28 and the second base 32 move close to each other, the elastic rubber block 39 is compressed, buffers the movement of the two, and the elastic rubber block 39 assists the return plate spring 30 to push the first base 28 and the second base 32 to return to the original position.

[0033] The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and deformations can be made, and these improvements and deformations should also be considered as the protection scope of the present application.

Claims

1. A reduction gearbox braking device, characterised in that, Including brake mechanism (2), the brake mechanism (2) includes brake disc (22), the brake disc (22) is fixedly connected with input shaft assembly (21) of reduction gearbox (1), the outer wall of reduction gearbox (1) is provided with brake assembly (23) on the one side of brake disc (22); The outer wall of the reduction gearbox (1) is provided with a plurality of fixing bolts (24), the outer wall of the fixing bolt (24) is provided with two positioning nuts (33), the brake assembly (23) comprises a first base (28) and a second base (32), the first base (28) and the second base (32) are both in sliding connection with a plurality of fixing bolts (24), the first base (28) and the second base (32) are both located between the two positioning nuts (33), a return plate spring (30) is arranged between the first base (28) and the second base (32), and the outer wall of the first base (28) is provided with a driving mechanism on one side, which is used to push the first base (28) and the second base (32) to move close to each other.

2. A reduction gearbox brake arrangement according to claim 1, characterised in that, The outer wall of the first base (28) and the second base (32) is provided with a brake friction plate (31) on the side close to the brake disc (22).

3. The reduction gearbox brake apparatus of claim 1, wherein, The driving mechanism comprises a brake rocker arm (26), the inner side of the first base (28) and the second base (32) is provided with a same slidingly connected sliding rod (35), one end of the sliding rod (35) is provided with a first clamping bolt (40) on one side of the second base (32), the other end of the sliding rod (35) is provided with a second clamping bolt (29) on one side of the first base (28), the brake rocker arm (26) is sleeved on the outer wall of the sliding rod (35) and located between the first base (28) and the second clamping bolt (29), the outer wall of the brake rocker arm (26) is rotatably connected with a cable (36), and the outer wall of the brake rocker arm (26) is provided with an extrusion mechanism, when the cable (36) drives the brake rocker arm (26) to rotate, the extrusion mechanism is used to push the first base (28) and the second base (32) to move close to each other.

4. A reduction gearbox brake arrangement according to claim 3, characterised in that, The return plate spring (30) is provided with an opening for passing through the sliding rod (35).

5. The reduction gearbox brake apparatus of claim 3, wherein, The outer wall of the first base (28) is detachably connected with a mounting plate (25) on one side, and the cable (36) is fixedly connected with the mounting plate (25).

6. A reduction gearbox brake arrangement according to claim 5, characterised in that, The outer wall of the mounting plate (25) is provided with a supporting column (37) on one side, and the supporting column (37) is elastically connected with the brake rocker arm (26) through a return spring (27).

7. The reduction gearbox brake apparatus of claim 3, wherein, The extrusion mechanism comprises a fixed block (34) arranged on the outer wall of the first base (28), the fixed block (34) is coaxially arranged with the brake rocker arm (26), a plurality of steel balls (38) are uniformly arranged on the outer wall of the fixed block (34) on one side of the brake rocker arm (26), and an inclined groove is formed in the outer wall of the brake rocker arm (26) on one side of the steel ball (38).

8. The reduction gearbox brake apparatus of claim 1, wherein, The first base (28) and the second base (32) are provided with an elastic rubber block (39) between them, and the elastic rubber block (39) is sleeved on the outer side of the fixing bolt (24).

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