Hydraulic motor braking mechanism

Abstract

The utility model relates to the technical field of hydraulic motors, in particular to a hydraulic motor braking mechanism which comprises a hydraulic motor body, a motor shaft is installed in the hydraulic motor body, an oil conveying pipe is installed on the hydraulic motor body, and one side of the hydraulic motor body is detachably connected with a connecting sleeve through a plurality of bolts. The connecting sleeve is fixedly connected with a connecting cylinder, one end of the connecting cylinder is detachably connected with a check block through a plurality of bolts, the check block is rotationally connected with a screw rod, the screw rod is in threaded connection with a sliding sleeve, a piston rod is slidably connected into the connecting cylinder, the piston rod is slidably connected with the sliding sleeve, and a brake spring is arranged in the piston rod; a pressing plate is fixedly connected to one end of the piston rod, a connecting piece is clamped to the end of the motor shaft, friction plates are installed on the connecting piece and the pressing plate, and the two friction plates abut against each other; and the braking force can be adjusted, so that the braking force can be guaranteed, and the use stability is good.

Description

Technical Field

[0001] The utility model relates to a hydraulic motor brake mechanism, in particular to a hydraulic motor brake mechanism, belonging to the technical field of hydraulic motors. Background Art

[0002] The hydraulic motor is an actuator of the hydraulic system. It converts the liquid pressure energy provided by the hydraulic pump into the mechanical energy (torque and speed) of its output shaft. Liquid is the medium for transmitting force and motion. A braking mechanism is installed on some hydraulic motors. The hydraulic motor braking mechanism can achieve accurate control and start and stop, thereby improving the working efficiency of construction machinery. A spring is set inside the hydraulic motor braking mechanism. When the pressure of the hydraulic oil is large enough, the spring is lifted, the braking function is turned off, and the motor rotates normally. If the pressure of the hydraulic oil decreases or disappears, the spring inside the brake pad rebounds, the brake pad locks the rotor stator, and the motor remains stationary, thereby achieving braking of the hydraulic motor.

[0003] However, the elastic force of the spring inside the traditional hydraulic motor may decrease with the increase of the use time, and the elastic force of the spring is not adjustable, which may lead to insufficient braking force and poor stability in use. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic motor brake mechanism to solve the above problems, which can adjust the braking force, thereby ensuring the braking force and having good stability in use.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a hydraulic motor brake mechanism comprises a hydraulic motor body, a motor shaft is installed inside the hydraulic motor body, an oil pipeline is installed on the hydraulic motor body, a brake structure is provided on the hydraulic motor body, and the brake structure comprises a connecting sleeve and a connecting cylinder, one side of the hydraulic motor body is detachably connected with a connecting sleeve through a plurality of bolts, a connecting cylinder is fixedly connected to the connecting sleeve, one end of the connecting cylinder is detachably connected with a block through a plurality of bolts, a screw is rotatably connected to the block, a sliding sleeve is threadedly connected to the screw, a piston rod is slidably connected inside the connecting cylinder, the piston rod and the sliding sleeve are slidably connected, a brake spring is provided inside the piston rod, one end of the brake spring abuts against the sliding sleeve, the other end of the brake spring abuts against the piston rod, one end of the piston rod is fixedly connected with a pressure plate, a connecting piece is clamped at the end of the motor shaft, friction plates are installed on the connecting piece and the pressure plate, and the two friction plates abut against each other.

[0006] Preferably, one end of the screw rod is provided with a groove matching the hexagonal wrench, and the cross-section of one end of the motor shaft is a hexagonal structure.

[0007] Preferably, the cross-section of the end of the connecting sleeve is L-shaped, and the cross-section of the end of the pressing plate is L-shaped.

[0008] Preferably, the cross section of the piston rod is T-shaped, and one end of the oil delivery pipe is connected to the interior of the connecting cylinder.

[0009] Preferably, one of the friction plates is detachably connected to the pressure plate via two bolts and nuts, and the other friction plate is detachably connected to the connecting plate via two bolts and nuts.

[0010] Preferably, one end of the motor shaft is threadedly connected with a knob, and the knob is in conflict with the connecting piece.

[0011] Preferably, the cross-section of the knob is T-shaped, and a protrusion is fixedly connected to one side of the knob.

[0012] The beneficial effects of the utility model are as follows: when the hydraulic motor body needs to be started, the hydraulic oil will enter the interior of the connecting cylinder from the oil pipe, the piston rod will slide inside the connecting cylinder under the action of the hydraulic oil pressure, the brake spring will contract, the movement of the piston rod will drive the pressure plate to move, the movement of the pressure plate will drive one of the friction plates to move, so that the two friction plates are not in contact, when the two friction plates are not in contact, the motor shaft can rotate normally, when the hydraulic motor body stops working, the pressure of the hydraulic oil in the connecting cylinder will decrease, at this time the brake spring will extend to drive the piston rod to move, the movement of the piston rod drives the pressure plate to move, and the movement of the pressure plate drives One friction plate moves toward the other friction plate. When the two friction plates are pressed against each other, the motor shaft will stop rotating quickly under the action of friction force, thereby realizing rapid braking of the hydraulic motor body. When the elastic force of the brake spring changes, the screw can be turned by a hexagonal wrench. The screw thread drives the sleeve to move inside the piston rod. The movement of the sleeve will squeeze the brake spring, thereby changing the initial state of the brake spring. Therefore, when the two friction plates are pressed against each other again, the contact force will also change, thereby realizing the adjustment of the braking force, avoiding the occurrence of insufficient braking, and effectively improving the stability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the connection structure of the connection sleeve and the connection tube of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the friction plate of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the sliding sleeve of the utility model;

[0017] Figure 5 It is a schematic diagram of the structure of the motor shaft of the utility model.

[0018] In the figure: 1. hydraulic motor body; 2. motor shaft; 3. oil pipeline; 4. brake structure; 401. connecting sleeve; 402. connecting cylinder; 403. block; 404. screw; 405. sliding sleeve; 406. brake spring; 407. piston rod; 408. pressure plate; 409. friction plate; 410. connecting plate; 5. knob; 6. bump. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a hydraulic motor brake mechanism includes a hydraulic motor body 1, a motor shaft 2 is installed inside the hydraulic motor body 1, an oil pipeline 3 is installed on the hydraulic motor body 1, a brake structure 4 is provided on the hydraulic motor body 1, and the brake structure 4 includes a connecting sleeve 401 and a connecting cylinder 402. One side of the hydraulic motor body 1 is detachably connected to the connecting sleeve 401 through a plurality of bolts, the connecting sleeve 401 is fixedly connected to the connecting cylinder 402, one end of the connecting cylinder 402 is detachably connected to a stopper 403 through a plurality of bolts, the stopper 403 is rotatably connected to a screw 404, and the screw A sleeve 405 is threadedly connected to 404, and a piston rod 407 is slidably connected inside the connecting tube 402. The piston rod 407 and the sleeve 405 are slidably connected. A brake spring 406 is provided inside the piston rod 407, one end of the brake spring 406 abuts against the sleeve 405, and the other end of the brake spring 406 abuts against the piston rod 407. A pressure plate 408 is fixedly connected to one end of the piston rod 407, and a connecting piece 410 is clamped at the end of the motor shaft 2. Friction plates 409 are installed on the connecting piece 410 and the pressure plate 408, and the two friction plates 409 abut against each other.

[0021] As a technical optimization solution of the utility model, Figure 2 and Figure 5As shown, one end of the screw rod 404 is provided with a groove matching with a hexagonal wrench, and the cross-section of one end of the motor shaft 2 is a hexagonal structure, so the screw rod 404 can be rotated by a hexagonal wrench.

[0022] As a technical optimization solution of the utility model, Figure 2 As shown, the cross-section of the end of the connecting sleeve 401 is L-shaped, the cross-section of the end of the pressure plate 408 is L-shaped, the cross-section of the piston rod 407 is T-shaped, and one end of the oil pipe 3 is connected to the interior of the connecting cylinder 402, so that the hydraulic oil can enter the interior of the connecting cylinder 402 from the oil pipe 3.

[0023] As a technical optimization solution of the utility model, Figure 2 As shown, one of the friction plates 409 is detachably connected to the pressure plate 408 through two bolts and nuts, and the other friction plate 409 is detachably connected to the connecting plate 410 through two bolts and nuts, so that the friction plate 409 can be disassembled and replaced.

[0024] As a technical optimization solution of the utility model, Figure 2 As shown, a knob 5 is threadedly connected to one end of the motor shaft 2, and the knob 5 is in contact with the connecting piece 410. The cross-section of the knob 5 is a T-shaped structure, and a protrusion 6 is fixedly connected to one side of the knob 5, so that the connecting piece 410 can be fixed.

[0025] When the utility model is in use, when it is necessary to start the hydraulic motor body 1, the hydraulic oil will enter the interior of the connecting cylinder 402 from the oil pipe 3, and the piston rod 407 will slide inside the connecting cylinder 402 under the action of the hydraulic oil pressure, and the brake spring 406 will contract. The movement of the piston rod 407 will drive the pressure plate 408 to move, and the movement of the pressure plate 408 will drive one of the friction plates 409 to move, so that the two friction plates 409 are not in contact with each other. When the two friction plates 409 are not in contact with each other, the motor shaft 2 can rotate normally. When the hydraulic motor body 1 stops working, the pressure of the hydraulic oil inside the connecting cylinder 402 will decrease. At this time, the brake spring 406 will extend and drive the piston rod 407 to move, and the movement of the piston rod 407 will drive the pressure plate 408 to move, and the movement of the pressure plate 408 will drive one of the friction plates 409 to move toward the other friction plate 409. When the two friction plates 409 are pressed tightly, the motor shaft 2 will quickly rotate under the action of friction. Stop rotating, thereby realizing rapid braking of the hydraulic motor body 1, and when the elastic force of the brake spring 406 changes, the screw 404 can be rotated by the hexagonal wrench, and the screw 404 thread drives the sleeve 405 to move inside the piston rod 407, and the movement of the sleeve 405 will squeeze the brake spring 406, thereby changing the initial state of the brake spring 406. Therefore, when the two friction plates 409 collide again, the resistance force will also change, thereby realizing the adjustment of the braking force, avoiding the occurrence of insufficient braking, and effectively improving the stability of use. When the friction plate 409 needs to be replaced, the connecting sleeve 401 can be removed from the hydraulic motor body 1, and then one of the friction plates 409 can be removed from the connecting plate 410, and the other friction plate 409 can be removed from the pressure plate 408, thereby realizing the removal of the friction plate 409, which is convenient for replacing the friction plate 409.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydraulic motor brake mechanism, comprising a hydraulic motor body (1), characterized in that: A motor shaft (2) is installed inside the hydraulic motor body (1), an oil delivery pipe (3) is installed on the hydraulic motor body (1), a brake structure (4) is provided on the hydraulic motor body (1), and the brake structure (4) comprises a connecting sleeve (401) and a connecting cylinder (402), one side of the hydraulic motor body (1) is detachably connected to the connecting sleeve (401) via a plurality of bolts, the connecting sleeve (401) is fixedly connected to the connecting cylinder (402), one end of the connecting cylinder (402) is detachably connected to a stopper (403) via a plurality of bolts, a screw rod (404) is rotatably connected to the stopper (403), and a sliding sleeve (404) is threadedly connected to the screw rod (404). 05), the interior of the connecting tube (402) is slidably connected with a piston rod (407), the piston rod (407) is slidably connected with the sliding sleeve (405), a brake spring (406) is provided inside the piston rod (407), one end of the brake spring (406) abuts against the sliding sleeve (405), the other end of the brake spring (406) abuts against the piston rod (407), one end of the piston rod (407) is fixedly connected with a pressure plate (408), the end of the motor shaft (2) is engaged with a connecting piece (410), friction plates (409) are installed on the connecting piece (410) and the pressure plate (408), and the two friction plates (409) abut against each other.

2. A hydraulic motor brake mechanism according to claim 1, characterized in that: One end of the screw rod (404) is provided with a groove matching a hexagonal wrench, and the cross-section of one end of the motor shaft (2) is a hexagonal structure.

3. A hydraulic motor brake mechanism according to claim 1, characterized in that: The cross-section of the end of the connecting sleeve (401) is in an L-shaped structure, and the cross-section of the end of the pressing plate (408) is in an L-shaped structure.

4. The hydraulic motor brake mechanism according to claim 1, characterized in that: The cross section of the piston rod (407) is T-shaped, and one end of the oil delivery pipe (3) is connected to the inside of the connecting cylinder (402).

5. The hydraulic motor brake mechanism according to claim 1, characterized in that: One of the friction plates (409) is detachably connected to the pressure plate (408) via two bolts and nuts, and the other friction plate (409) is detachably connected to the connection plate (410) via two bolts and nuts.

6. A hydraulic motor brake mechanism according to claim 1, characterized in that: One end of the motor shaft (2) is threadedly connected to a knob (5), and the knob (5) is in contact with the connecting piece (410).

7. A hydraulic motor brake mechanism according to claim 6, characterized in that: The cross section of the knob (5) is in a T-shaped structure, and a protrusion (6) is fixedly connected to one side of the knob (5).

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