Multi-stage braking monorail crane tooth drive unit

Abstract

The utility model provides a monorail crane tooth drive unit with multi-stage braking. The monorail crane tooth drive unit comprises a power part, a service braking part and a mounting frame, the power part comprises a driving machine with a brake and a driving gear; the driving gear is arranged on an output shaft of the driving machine in a sleeving manner; the service braking part is connected with the driving gear and is suitable for braking the driving gear; the mounting frame is provided with a space for containing the driving gear and located between the power part and the service braking part, one side of the mounting frame is fixed to the power part, and the other side of the mounting frame is fixed to the service braking part. According to the monorail crane tooth driving unit with the multi-stage braking function, traveling braking is achieved through the traveling braking part, parking braking is achieved through the driving machine with the brake, the two braking modes are combined, the safety of the monorail crane tooth driving unit is greatly improved, and the braking effect is more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of monorail cranes, in particular to a monorail crane gear drive unit with multi-stage braking. Background Art

[0002] The braking device of the monorail crane is one of the important safeguards for the safe operation of the monorail crane. In actual operation, the standard braking force of the monorail crane can reach 1.5-2 times of the traction force. The brake device bears a large load during braking, which also puts forward higher requirements on the safety of the brake device.

[0003] At present, monorail cranes often use parking brakes, that is, brakes are set inside the motors. This braking method has great safety hazards: when one or more brakes in the multiple motors of the monorail crane fail, the braking capacity of the entire vehicle will be reduced, which can easily cause the vehicle to slip when going uphill, run away when going downhill, or slip when restarting on a slope, which can cause serious transportation accidents with vehicle destruction and loss of life. Utility Model Content

[0004] The utility model aims to provide a monorail hanging gear drive unit with multi-stage braking to solve the problem of potential safety hazards in the braking device of the existing monorail hanging gear drive unit.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A multi-stage braking monorail hanging gear drive unit, comprising:

[0007] A power unit, the power unit comprising a driving machine with a brake and a driving gear; the driving gear is sleeved on an output shaft of the driving machine;

[0008] A service brake part, the service brake part is connected to the driving gear and is suitable for braking the driving gear;

[0009] The mounting frame has a space for accommodating the driving gear and is located between the power unit and the service brake unit, with one side being fixed to the power unit and the other side being fixed to the service brake unit.

[0010] Preferably, the service brake unit comprises:

[0011] A flange connected to the driving gear;

[0012] A spline shaft, wherein the spline shaft is arranged at the center of the flange;

[0013] A connecting seat, wherein the connecting seat is provided with an axial hole capable of accommodating the spline shaft to pass therethrough, and the axial hole is provided with a keyway;

[0014] A brake pad assembly, wherein the brake pad assembly is sleeved on the spline shaft and located in the shaft hole of the connecting seat, and is suitable for being slidably connected with the spline shaft and the connecting seat;

[0015] A telescopic portion, the telescopic portion is connected to the connecting seat, fits with the brake pad assembly, and is suitable for pressing or loosening the brake pad assembly;

[0016] An end cover is connected to the telescopic portion.

[0017] Preferably, the brake pad set includes a plurality of brake pads and a plurality of brake discs;

[0018] The outer edge of the brake pad is provided with a spline, which is suitable for sliding connection with the keyway of the connecting seat; the inner ring of the brake disc is provided with a keyway, which is suitable for sliding connection with the spline shaft; the brake pad and the brake disc are arranged alternately.

[0019] Preferably, a brake pad assembly retaining ring is provided between the brake pad assembly and the flange; and / or,

[0020] A position sensor is provided at the brake pad assembly.

[0021] Preferably, the telescopic part comprises a cylinder, a piston and a spring;

[0022] The piston is installed in the cylinder body, and the spring is embedded in the piston.

[0023] Preferably, a first sealing ring and a second sealing ring are provided between the cylinder body and the piston; an oil chamber is formed between the first sealing ring and the second sealing ring;

[0024] The cylinder body is provided with an oil filling hole, which is communicated with the oil cavity formed by the first sealing ring and the second sealing ring.

[0025] Preferably, a bearing is mounted on the end cover; and / or,

[0026] The end cover is provided with an observation hole and / or a measuring hole.

[0027] Preferably, the mounting frame comprises a first mounting plate, a second mounting plate, and a connecting plate;

[0028] The first mounting plate and the second mounting plate are parallel to each other and connected by the connecting plate;

[0029] The first mounting plate is connected to the power unit; the second mounting plate is connected to the service brake unit.

[0030] Preferably, the multi-stage braking monorail hanging gear drive unit further comprises a bearing frame, on which bearing wheels are mounted and arranged above the mounting frame.

[0031] Preferably, the multi-stage braking monorail hanging gear drive unit further includes a cover shell, and the cover shell is arranged above the driving machine.

[0032] The above solution of the utility model includes at least the following beneficial effects:

[0033] The multi-stage braking monorail gear drive unit described in the utility model comprises: a power unit, a service brake unit, and a mounting frame; the power unit comprises a driving machine with a brake and a driving gear; the driving gear is sleeved on the output shaft of the driving machine; the service brake unit is connected to the driving gear and is suitable for braking the driving gear; the mounting frame has a space for accommodating the driving gear and is located between the power unit and the service brake unit, with one side fixed to the power unit and the other side fixed to the service brake unit. The multi-stage braking monorail gear drive unit described in the utility model realizes service braking (i.e., real-time braking of the driving gear) through the service brake unit and realizes parking braking (i.e., braking of the driving machine) through the driving machine with a brake. The combination of the two braking methods greatly improves the safety of the monorail gear drive unit and makes the braking effect more reliable. In addition, the multi-stage braking monorail hanging gear drive unit is provided with a driving machine with a brake on one side of the two sides of the mounting frame, and a service brake part is provided on the other side. The service brake part replaces the counterweight block, which can achieve more efficient space utilization and more reasonable structural layout while maintaining the balance of the monorail hanging gear drive unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a single-track hanging gear drive unit with multi-stage braking of the utility model;

[0035] Figure 2 It is a structural schematic diagram of the multi-stage braking monorail hanging gear drive unit of the utility model from another angle;

[0036] Figure 3 It is an exploded structural diagram of a single-track hanging gear drive unit with multi-stage braking of the utility model;

[0037] Figure 4 It is an exploded structural diagram of the service brake part of the utility model;

[0038] Figure 5 yes Figure 4 Schematic diagram of the partial structural cross-section of the service brake part.

[0039] Among them, 1. power unit; 11. driving machine; 12. driving gear; 2. service brake unit; 21. flange; 22. spline shaft; 23. connecting seat; 231. keyway; 24. brake pad assembly; 241. brake pad; 242. brake disc; 25. telescopic unit; 251. cylinder body; 252. piston; 253. spring; 254. first sealing ring; 255. second sealing ring; 256. oil filling hole; 26. end cover; 27. brake pad assembly retaining ring; 28. bearing; 29. ​​screw; 3. mounting frame; 31. first mounting plate; 32. second mounting plate; 33. connecting plate; 34. bolt; 4. bearing frame; 41. bearing wheel; 5. cover. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] The embodiment of the utility model provides a multi-stage braking monorail hanging gear drive unit, such as Figure 1-5 As shown, it includes: a power unit 1, a service brake unit 2, and a mounting frame 3;

[0042] The power unit 1 includes a driving machine 11 with a brake and a driving gear 12; the driving gear 12 is sleeved on the output shaft of the driving machine 11;

[0043] The service brake part 2 is connected to the driving gear 12 and is suitable for braking the driving gear 12;

[0044] The mounting frame 3 has a space for accommodating the driving gear 12 and is located between the power unit 1 and the service brake unit 2 , with one side being fixed to the power unit 1 and the other side being fixed to the service brake unit 2 .

[0045] It should be noted that the driving unit 1 can be a driving device with a brake in the prior art, as long as it can achieve parking brake. For example, a motor / electric machine with a brake described in Chinese patent documents CN104246214A, CN111585386B, etc. can be used.

[0046] For achieving the purpose of the present invention, the structure of the service brake part 2 is not unique, as long as it can achieve braking of the driving gear 12. In this embodiment, a preferred implementation is provided, in which the service brake part 2 is installed on a support shaft (not shown in the figure, the position of the shaft hole of each component is the installation position of the support shaft), such as Figure 4-5 As shown, the service brake part 2 includes: a flange 21, a spline shaft 22, a connecting seat 23, a brake pad assembly 24, a telescopic part 25, and an end cover 26;

[0047] The flange 21 is connected to the driving gear 12; the spline shaft 22 is arranged at the center of the flange 21; the connecting seat 23 is provided with an axial hole for accommodating the spline shaft 22 to pass through, and the axial hole is provided with a keyway 231; the brake pad group 24 is sleeved on the spline shaft 22 and is located in the axial hole of the connecting seat 23, and is suitable for sliding connection with the spline shaft 22 and the connecting seat 23; the telescopic part 25 is connected to the connecting seat 23, fits with the brake pad group 24, and is suitable for tightening or loosening the brake pad group 24; the end cover 26 is connected to the telescopic part 25.

[0048] Among them, the brake pad group 24 includes multiple brake pads 241 and multiple brake discs 242; the outer edge of the brake pad 241 is provided with a spline, which is suitable for sliding connection with the keyway 231 of the connecting seat 23; the inner ring of the brake disc 242 is provided with a keyway, which is suitable for sliding connection with the spline shaft 22; the brake pad 241 and the brake disc 242 are arranged alternately.

[0049] In order to limit the positions of the brake pads 241 and the brake disc 242 of the brake pad assembly 24 to ensure the braking effect, a brake pad assembly retaining ring 27 is provided between the brake pad assembly 24 and the flange 21 .

[0050] For achieving the purpose of the utility model, the design of the telescopic part 25 is not unique, as long as it can compress or loosen the brake pad set 24 as needed to switch between the braking state and the non-braking state. In this embodiment, the telescopic part 25 includes a cylinder 251, a piston 252, and a spring 253; the piston 252 is installed in the cylinder 251, and the spring 253 is embedded in the piston 252.

[0051] As a preferred implementation of this embodiment, a first sealing ring 254 and a second sealing ring 255 are provided between the cylinder body 251 and the piston 252; an oil chamber is formed between the first sealing ring 254 and the second sealing ring 255; an oil injection hole 256 is provided on the cylinder body 251, and the oil chamber formed by the first sealing ring 254 and the second sealing ring 255 is connected. In this way, the telescopic part 25 can be controlled by injecting oil into the oil injection hole 256. When there is no hydraulic oil in the oil chamber, the piston 252 is tightly attached to the inner wall of the cylinder body 251 under the action of the spring 253, and at this time, the brake pad set 24 is in a relaxed state, that is, a non-braking state; when hydraulic oil is injected into the oil injection hole 256, the piston 252 overcomes the force of the spring 253 and moves toward the direction of the brake pad set 24, and at this time, the brake pad set 24 is in a compressed state, that is, a braking state.

[0052] In order to connect the telescopic part 25 with the connecting seat 23 and then fit the brake pad assembly 24, the telescopic part 25 and the connecting seat 23 can be connected by screws 29. Those skilled in the art can also choose other connection methods to achieve the connection between the telescopic part 25 and the connecting seat 23.

[0053] As a specific implementation of this embodiment, a bearing 28 is installed on the end cover 26. The arrangement of the bearing 28 facilitates the installation of the end of the support shaft of the service brake unit 2 and the end cover 26.

[0054] As a preferred design mode of this embodiment, an observation hole and / or a measuring hole is provided on the end cover 26. Through the setting of the observation hole and / or the measuring hole, the wear condition of the brake pad set 24 can be observed or measured so as to replace the brake pad 241 in time. The observation hole refers to a structure that can qualitatively observe the wear condition of the brake pad set 24; the measuring hole refers to a structure that can quantitatively measure the wear condition of the brake pad set 24.

[0055] In order to timely know the wear condition of the brake pad set 24, a position sensor may be further provided at the brake pad set 24. For example, the position sensor is placed against the brake pad set 24. The brake pad set 24 will continue to wear and become thinner with use. The wear condition of the brake pad set 24 can be known through the displacement information collected by the position sensor. When the wear degree of the brake pad set 24 reaches a first preset value, it can be set to trigger a displacement switch to remind the operator to replace the brake pad set 24. When the brake pad set 24 continues to wear and the wear degree reaches a second preset value, it can be set to trigger the brake of the drive machine 11 and / or the service brake unit 2 to brake, so that the operator can inspect and replace the brake pad set 24.

[0056] For achieving the purpose of the present invention, the design of the mounting frame 3 is not unique. In this embodiment, a preferred design is provided, such as Figure 3 As shown, the mounting frame 3 includes a first mounting plate 31, a second mounting plate 32, and a connecting plate 33;

[0057] The first mounting plate 31 and the second mounting plate 32 are parallel to each other and connected by the connecting plate 33; the first mounting plate 31 is connected to the power unit 1; the second mounting plate 32 is connected to the service brake unit 2. Such a structure can stably install the driving gear 12 in the mounting frame 3, and is more conducive to forming a balanced counterweight on both sides of the mounting frame 3. The way the first mounting plate 31 is connected to the power unit 1 and the way the second mounting plate 32 is connected to the service brake unit 2 include but are not limited to bolts 34.

[0058] In this embodiment, the multi-stage braking monorail hanging gear drive unit further includes a bearing frame 4 , on which a bearing wheel 41 is mounted, and the bearing frame 4 is arranged above the mounting frame 3 .

[0059] In order to protect the driving machine 11 , the multi-stage braking monorail hanging gear drive unit further includes a cover 5 , and the cover 5 is arranged above the driving machine 11 .

[0060] The braking process of the multi-stage braking monorail hanging gear drive unit described in this embodiment is as follows:

[0061] When the multi-stage braking monorail hanging gear drive unit is driving normally, the driving motor 11 is turned on, the brake of the driving motor 11 remains in a non-braking state, and the driving gear 12 rotates under the drive of the driving motor 11; at this time, the service brake part 2 is in a non-braking state, that is, there is no hydraulic oil in the oil chamber formed between the first sealing ring 254 and the second sealing ring 255, and the piston 252 is tightly attached to the inner wall of the cylinder body 251 under the action of the spring 253, and the brake pad set 24 is in a relaxed state, and there is a gap between the brake pad 241 and the brake disc 242. Driven by the driving gear 12, the flange 21 and the spline shaft 22 on the flange 21 rotate, and the brake disc 242 slidably connected to the spline shaft 22 also rotates, and the brake pad 241 does not affect the rotation of the brake disc 242, and the driving gear 12 can rotate normally;

[0062] When the multi-stage braking monorail gear drive unit needs to stop, the service brake part 2 can achieve the first-stage braking, and the brake of the driving machine 11 is kept in the braking state, so the second-stage braking can be achieved. The service brake part 2 is in a non-braking state, that is, the hydraulic oil is injected into the oil cavity formed between the first sealing ring 254 and the second sealing ring 255, and the piston 252 overcomes the force of the spring 253 and moves toward the brake pad set 24, so that the brake pad set 24 is in a compressed state, and there is no gap between the brake pad 241 and the brake disc 242. Under the action of the friction force between the brake pad 241 and the brake disc 242, the rotation of the spline shaft 22 is stopped, and then the flange 21 stops rotating, and the driving gear 12 is braked.

[0063] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multi-stage braking monorail hanging gear drive unit, characterized in that: include: A power unit (1), the power unit (1) comprising a driving machine (11) having a brake and a driving gear (12); the driving gear (12) is sleeved on an output shaft of the driving machine (11); A service brake part (2), the service brake part (2) being connected to the driving gear (12) and being suitable for braking the driving gear (12); A mounting frame (3) having a space for accommodating the driving gear (12) and being located between the power unit (1) and the service brake unit (2), with one side being fixed to the power unit (1) and the other side being fixed to the service brake unit (2).

2. The multi-stage braking monorail hanging gear drive unit according to claim 1, characterized in that: The service brake unit (2) comprises: A flange (21), wherein the flange (21) is connected to the driving gear (12); A spline shaft (22), wherein the spline shaft (22) is arranged at the center of the flange (21); A connecting seat (23), wherein the connecting seat (23) is provided with an axial hole capable of accommodating the spline shaft (22) to pass therethrough, and the axial hole is provided with a keyway (231); A brake pad assembly (24), wherein the brake pad assembly (24) is sleeved on the spline shaft (22) and is located in the shaft hole of the connecting seat (23), and is suitable for being slidably connected with the spline shaft (22) and the connecting seat (23); A telescopic portion (25), the telescopic portion (25) being connected to the connecting seat (23), being fitted with the brake pad assembly (24), and being suitable for pressing or loosening the brake pad assembly (24); An end cover (26), wherein the end cover (26) is connected to the telescopic portion (25).

3. The multi-stage braking monorail hanging gear drive unit according to claim 2, characterized in that: The brake pad set (24) comprises a plurality of brake pads (241) and a plurality of brake discs (242); The outer edge of the brake pad (241) is provided with a spline, which is suitable for sliding connection with the keyway (231) of the connecting seat (23); the inner ring of the brake disc (242) is provided with a keyway, which is suitable for sliding connection with the spline shaft (22); the brake pad (241) and the brake disc (242) are arranged alternately.

4. The multi-stage braking monorail hanging gear drive unit according to claim 3, characterized in that: A brake pad assembly retaining ring (27) is provided between the brake pad assembly (24) and the flange (21); and / or, A position sensor is provided at the brake pad assembly (24).

5. The multi-stage braking monorail hanging gear drive unit according to claim 2, characterized in that: The telescopic part (25) comprises a cylinder (251), a piston (252), and a spring (253); The piston (252) is installed in the cylinder body (251), and the spring (253) is embedded in the piston (252).

6. The multi-stage braking monorail hanging gear drive unit according to claim 5, characterized in that: A first sealing ring (254) and a second sealing ring (255) are provided between the cylinder body (251) and the piston (252); an oil chamber is formed between the first sealing ring (254) and the second sealing ring (255); The cylinder body (251) is provided with an oil filling hole (256) which is in communication with the oil cavity formed by the first sealing ring (254) and the second sealing ring (255).

7. The multi-stage braking monorail hanging gear drive unit according to claim 2, characterized in that: A bearing (28) is mounted on the end cover (26); and / or, The end cover (26) is provided with an observation hole and / or a measuring hole.

8. The multi-stage braking monorail hanging gear drive unit according to any one of claims 1 to 7, characterized in that: The mounting frame (3) comprises a first mounting plate (31), a second mounting plate (32), and a connecting plate (33); The first mounting plate (31) and the second mounting plate (32) are parallel to each other and connected via the connecting plate (33); The first mounting plate (31) is connected to the power unit (1); and the second mounting plate (32) is connected to the service brake unit (2).

9. The multi-stage braking monorail hanging gear drive unit according to any one of claims 1 to 7, characterized in that: It also comprises a bearing frame (4), on which bearing wheels (41) are mounted and which is arranged above the mounting frame (3).

10. The multi-stage braking monorail hanging gear drive unit according to any one of claims 1 to 7, characterized in that: It also comprises a cover shell (5), wherein the cover shell (5) is arranged above the driving machine (11).

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