CN214837530U - Hydraulic braking turntable for engineering machinery - Google Patents
Hydraulic braking turntable for engineering machinery Download PDFInfo
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- CN214837530U CN214837530U CN202120224470.1U CN202120224470U CN214837530U CN 214837530 U CN214837530 U CN 214837530U CN 202120224470 U CN202120224470 U CN 202120224470U CN 214837530 U CN214837530 U CN 214837530U
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Abstract
The utility model aims at providing a hydraulic braking turntable for engineering machinery, which comprises a mounting seat, an external tooth slewing bearing, a hydraulic motor and a hydraulic brake; the external tooth slewing bearing is arranged on the lower bottom surface of the mounting seat, and the hydraulic motor and the hydraulic brake are respectively arranged on the top surface of the mounting seat; the output shaft of the hydraulic motor is vertically and downwards arranged, the lower end of the output shaft of the hydraulic motor penetrates through the shaft hole in the mounting seat to enter the lower bottom surface of the mounting seat, the lower end of the output shaft of the hydraulic motor is fixedly provided with a gear a, the braking shaft of the hydraulic brake is vertically and downwards arranged, the lower end of the braking shaft of the hydraulic brake penetrates through the braking shaft hole in the mounting seat to enter the lower bottom surface of the mounting seat, and the braking shaft of the hydraulic brake is provided with a gear b; the gear a and the gear b are respectively supported with the external teeth of the external tooth slewing bearing; the hydraulic motor is connected with the hydraulic brake through a hydraulic oil path. The utility model discloses a hydraulic motor and hydraulic brake disconnect-type design, hydraulic brake independent braking, hydraulic motor do not receive the braking force to influence, and it is convenient to maintain, and braking effect is good.
Description
Technical Field
The utility model relates to an engineering machine tool field, concretely relates to hydraulic braking carousel for engineering machine tool.
Background
The traditional braking mechanism of the engineering machinery rotating disc is generally directly arranged in a hydraulic motor, the braking mechanism and the hydraulic flow distribution rotating mechanism are coaxially connected into a whole up and down, the internal structure is complex, the external dimension is large, and the manufacturing cost is high.
And when braking is needed, due to the coaxial center relation, the motor and the brake can bear the influence of braking force at the same time, so that the abrasion of the hydraulic motor is aggravated, the damage risk of the hydraulic motor is increased, and the service life of the hydraulic motor is shortened. Moreover, when the flow distribution rotating mechanism or the braking mechanism is damaged, the whole flow distribution rotating mechanism or the braking mechanism can only be replaced, and the maintenance cost is high.
Disclosure of Invention
The utility model aims at providing a hydraulic braking carousel for engineering machine tool, the device with hydraulic motor and hydraulic brake separation design, has solved the problem that prior art exists, has effectively avoided hydraulic motor's the braking force that bears to cause extra wearing and tearing, the cost is reduced to it is convenient to maintain, and braking effect is good.
The technical scheme of the utility model as follows:
the hydraulic brake turntable for the engineering machinery comprises a mounting seat, an external tooth slewing bearing, a hydraulic motor and a hydraulic brake;
the external tooth slewing bearing is arranged on the lower bottom surface of the mounting seat, and the hydraulic motor and the hydraulic brake are respectively arranged on the top surface of the mounting seat; the output shaft of the hydraulic motor is vertically and downwards arranged, the lower end of the output shaft of the hydraulic motor penetrates through the shaft hole in the mounting seat to enter the lower bottom surface of the mounting seat, the lower end of the output shaft of the hydraulic motor is fixedly provided with a gear a, the braking shaft of the hydraulic brake is vertically and downwards arranged, the lower end of the braking shaft of the hydraulic brake penetrates through the braking shaft hole in the mounting seat to enter the lower bottom surface of the mounting seat, and the braking shaft of the hydraulic brake is provided with a gear b; the gear a and the gear b are respectively supported with the external teeth of the external tooth slewing bearing;
the hydraulic motor is connected with the hydraulic brake through a hydraulic oil pipe.
The front end of the hydraulic oil pipe is communicated with a working cavity of the hydraulic motor, and the rear end of the hydraulic oil pipe is communicated with a working cavity of the hydraulic brake.
The hydraulic motor is provided with an oil port A and an oil port B, and the oil port A and the oil port B are respectively connected with the hydraulic pump through an oil way and a hydraulic distribution valve.
The hydraulic motor is provided with a bidirectional balance valve communicated with a working cavity of the hydraulic motor, the bidirectional balance valve comprises an oil way I and an oil way II, the oil way I comprises an oil inlet V1 and an outlet C1 connected with an oil port A of the hydraulic motor, and the oil way II comprises an oil inlet V2 and an outlet C2 connected with an oil port B of the hydraulic motor;
the oil inlet V1 and the oil inlet V2 are respectively connected with an oil port a and an oil port b, and the oil ports a and b are respectively connected with a hydraulic pump through an oil way by a hydraulic distribution valve;
the oil circuit I and the oil circuit II are respectively connected with two inlets of the shuttle valve, and an outlet of the shuttle valve is communicated with a working cavity of the hydraulic brake through a hydraulic oil pipe.
The hydraulic motor and the hydraulic brake are respectively positioned on two sides of the external tooth slewing bearing in the same diameter direction.
And the middle part of the mounting seat is provided with a mounting hole consistent with the inner hole of the external tooth slewing bearing.
The hydraulic brake is a normally closed hydraulic brake. The principle of the normally closed brake is as follows: the brake is controlled by a two-position hydraulic change-over valve. When the manual reversing valve is in the left position or the right position, pressure oil enters the brake hydraulic cylinder through the hydraulic reversing valve, overcomes the spring force to open the brake, and enables the hydraulic motor to work. When the manual reversing valve is arranged in the middle position, hydraulic oil in the brake cylinder is discharged back to the oil tank through the hydraulic valve and the manual reversing valve, and braking is carried out on the motor. For example, a normally closed brake described in "normally closed brake of CN01210530.9 hydraulic transmission" in the prior art, or other normally closed hydraulic brakes produced by the prior art manufacturers may be used.
The lower bottom surface of the mounting seat is provided with a slewing bearing shell, the slewing bearing shell is sleeved outside the external tooth slewing bearing, and a gap is reserved between the inner circular surface of the slewing bearing shell and the external tooth bearing.
The utility model discloses the working process of hydraulic motor through hydraulic pressure oil pipe and hydraulic brake lug connection's scheme as follows:
when the oil ports A and B stop supplying oil, the hydraulic motor stops rotating, the oil pressure of the hydraulic oil pipe returns to zero, the hydraulic brake brakes, the external tooth support cannot rotate, and the motor is braked;
when the oil port A supplies oil and the oil port B returns oil, the hydraulic motor rotates in one direction, the hydraulic oil pipe has oil pressure, the hydraulic brake releases the braking state, the external tooth support can rotate, and the motor brake is released;
when the oil port B supplies oil and the oil port A returns oil, the hydraulic motor rotates towards the other direction, the hydraulic oil pipe has oil pressure, the hydraulic brake is released from the braking state, the external tooth support can rotate, and the motor brake is released.
The utility model discloses the working process of the scheme that hydraulic motor passes through two-way balanced valve, shuttle valve, hydraulic pressure oil pipe and is connected with hydraulic brake is as follows:
the hydraulic motor stops rotating when the oil ports A and B stop supplying oil when the oil ports V1 and V2 have no oil pressure, and the normally closed hydraulic brake brakes and the external tooth support cannot rotate to brake the motor when the inner shuttle valve of the bidirectional balance valve is in a free state;
oil is supplied to the oil way I, and oil is returned to the oil way II; at the moment, when oil is fed from the V1 and oil is obtained from the C1, the oil port A supplies oil and the oil port B returns oil, the shuttle valve in the balance valve is pushed to the right, the normally closed hydraulic brake obtains hydraulic pressure to release braking, the external tooth support can rotate, and the hydraulic motor rotates in one direction;
an oil way I returns oil, and an oil way II supplies oil; at the moment, oil is fed into the V2, oil is obtained from the C2, oil is supplied from the oil port B, oil is returned from the oil port A, the shuttle valve in the balance valve is pushed leftwards, the normally closed hydraulic brake obtains hydraulic pressure to release braking, the external tooth support can rotate, and the hydraulic motor rotates towards the other direction.
The utility model is suitable for an on the last hydraulic pressure carousel system of engineering machine tool, especially be applicable to the hydraulic pressure carousel system on the excavator accessory, for example press from both sides the wooden furniture, rotatory fill, wire pole anchor clamps, but gyration type accessory such as orange-peel bucket.
The utility model discloses with hydraulic motor and hydraulic brake separation design, solved the problem that prior art exists, effectively avoided hydraulic motor's extra wearing and tearing, the cost is reduced to convenient to use, braking effect is better, has good application prospect.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the present invention with the slewing bearing housing removed;
fig. 3 is a hydraulic schematic diagram of the bidirectional balance valve of the present invention;
the names and serial numbers of the parts in the figure are as follows:
1-mounting seat, 2-external tooth rotary bearing, 3-hydraulic motor, 4-hydraulic brake, 5-gear a, 6-gear b, 7-external tooth support, 8-hydraulic oil pipe, 9-oil port a, 10-oil port b, 11-bidirectional balance valve, 12-mounting hole, 13-rotary support shell and 14-shuttle valve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1 and 2, the hydraulic brake dial for construction machinery includes a mounting base 1, an external tooth slewing bearing 2, a hydraulic motor 3, and a hydraulic brake 4;
the external tooth slewing bearing 2 is arranged on the lower bottom surface of the mounting seat 1, and the hydraulic motor 3 and the hydraulic brake 4 are respectively arranged on the top surface of the mounting seat 1; the output shaft of the hydraulic motor 3 is vertically arranged downwards, the lower end of the output shaft of the hydraulic motor 3 penetrates through a shaft hole in the mounting seat 1 to enter the lower bottom surface of the mounting seat 1, a gear a5 is fixedly arranged on the lower end of the output shaft of the hydraulic motor 3, the braking shaft of the hydraulic brake 4 is vertically arranged downwards, the lower end of the braking shaft of the hydraulic brake 4 penetrates through a braking shaft hole in the mounting seat 1 to enter the lower bottom surface of the mounting seat 1, and a gear b6 is arranged on the braking shaft of the hydraulic brake 4; the gear a5 and the gear b6 are respectively connected with the external tooth bearing 7 of the external tooth slewing bearing 2;
the hydraulic motor 3 is connected with the hydraulic brake 4 through a hydraulic oil pipe 8.
The front end of the hydraulic oil pipe 8 is communicated with the working cavity of the hydraulic motor 3, and the rear end is communicated with the working cavity of the hydraulic brake 4.
The hydraulic motor 3 is provided with an oil port A and an oil port B, and the oil port A and the oil port B are respectively connected with the hydraulic pump through an oil way and a hydraulic distribution valve.
The hydraulic motor 3 is provided with a bidirectional balance valve 11 communicated with a working cavity of the hydraulic motor, the bidirectional balance valve 11 comprises an oil path I and an oil path II, the oil path I comprises an oil inlet V1 and an outlet C1 connected with an oil port A of the hydraulic motor 3, and the oil path II comprises an oil inlet V2 and an outlet C2 connected with an oil port B of the hydraulic motor 3;
the oil inlet V1 and the oil inlet V2 are respectively connected with an oil port a9 and an oil port b10, and the oil port a9 and the oil port b10 are respectively connected with a hydraulic pump through an oil way and a hydraulic distribution valve;
the oil path I and the oil path II are respectively connected with two inlets of the shuttle valve 14 through oil paths, and an outlet of the shuttle valve 14 is communicated with a working cavity of the hydraulic brake 4 through a hydraulic oil pipe 8.
The hydraulic motor 3 and the hydraulic brake 4 are respectively positioned on two sides of the external tooth slewing bearing 2 in the same diameter direction.
And the middle part of the mounting seat 1 is provided with a mounting hole 12 consistent with the inner hole of the external tooth slewing bearing 2.
The hydraulic brake 4 is a normally closed hydraulic brake.
The lower bottom surface of the mounting seat 1 is provided with a slewing bearing shell 13, the slewing bearing shell 13 is sleeved outside the external-tooth slewing bearing 2, and a gap is reserved between the inner circular surface of the slewing bearing shell 13 and the external-tooth bearing 7.
Claims (8)
1. The utility model provides a hydraulic braking carousel for engineering machine tool, includes mount pad (1), external tooth slewing bearing (2), hydraulic motor (3), hydraulic brake (4), its characterized in that:
the external tooth slewing bearing (2) is arranged on the lower bottom surface of the mounting seat (1), and the hydraulic motor (3) and the hydraulic brake (4) are respectively arranged on the top surface of the mounting seat (1); the output shaft of the hydraulic motor (3) is vertically arranged downwards, the lower end of the output shaft of the hydraulic motor (3) penetrates through a shaft hole in the mounting seat (1) to enter the lower bottom surface of the mounting seat (1), a gear a (5) is fixedly arranged on the lower end of the output shaft of the hydraulic motor (3), the braking shaft of the hydraulic brake (4) is vertically arranged downwards, the lower end of the braking shaft of the hydraulic brake (4) penetrates through a braking shaft hole in the mounting seat (1) to enter the lower bottom surface of the mounting seat (1), and a gear b (6) is arranged on the braking shaft of the hydraulic brake (4); the gear a (5) and the gear b (6) are respectively meshed with an external tooth support (7) of the external tooth slewing bearing (2);
the hydraulic motor (3) is connected with the hydraulic brake (4) through a hydraulic oil pipe (8).
2. A hydraulic brake dial for construction machinery, as defined in claim 1, wherein: the front end of the hydraulic oil pipe (8) is communicated with the working cavity of the hydraulic motor (3), and the rear end of the hydraulic oil pipe is communicated with the working cavity of the hydraulic brake (4).
3. A hydraulic brake dial for construction machinery, as defined in claim 2, wherein: the hydraulic motor (3) is provided with an oil port A and an oil port B, and the oil port A and the oil port B are respectively connected with the hydraulic pump through an oil way and a hydraulic distribution valve.
4. A hydraulic brake dial for construction machinery, as defined in claim 3, wherein:
the hydraulic motor (3) is provided with a bidirectional balance valve (11) communicated with a working cavity of the hydraulic motor, the bidirectional balance valve (11) comprises an oil way I and an oil way II, the oil way I comprises an oil inlet V1 and an outlet C1 connected with an oil port A of the hydraulic motor (3), and the oil way II comprises an oil inlet V2 and an outlet C2 connected with an oil port B of the hydraulic motor (3);
the oil inlet V1 and the oil inlet V2 are respectively connected with an oil port a (9) and an oil port b (10), and the oil port a (9) and the oil port b (10) are respectively connected with a hydraulic pump through an oil way by a hydraulic distribution valve;
the oil way I and the oil way II are respectively connected with two inlets of the shuttle valve (14), and an outlet of the shuttle valve (14) is communicated with a working cavity of the hydraulic brake (4) through a hydraulic oil pipe (8).
5. A hydraulic brake dial for construction machinery, as defined in claim 1, wherein: the hydraulic motor (3) and the hydraulic brake (4) are respectively positioned on two sides of the external tooth slewing bearing (2) in the same diameter direction.
6. A hydraulic brake dial for construction machinery, as defined in claim 1, wherein: the middle part of the mounting seat (1) is provided with a mounting hole (12) consistent with the inner hole of the external tooth slewing bearing (2).
7. A hydraulic brake dial for construction machinery, as defined in claim 1, wherein: the hydraulic brake (4) is a normally closed hydraulic brake.
8. A hydraulic brake dial for construction machinery, as defined in claim 1, wherein: the lower bottom surface of the mounting seat (1) is provided with a slewing bearing shell (13), the slewing bearing shell (13) is sleeved outside the external-tooth slewing bearing (2), and a gap is reserved between the inner circular surface of the slewing bearing shell (13) and the external-tooth bearing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120224470.1U CN214837530U (en) | 2021-01-27 | 2021-01-27 | Hydraulic braking turntable for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120224470.1U CN214837530U (en) | 2021-01-27 | 2021-01-27 | Hydraulic braking turntable for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214837530U true CN214837530U (en) | 2021-11-23 |
Family
ID=78953162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120224470.1U Active CN214837530U (en) | 2021-01-27 | 2021-01-27 | Hydraulic braking turntable for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214837530U (en) |
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2021
- 2021-01-27 CN CN202120224470.1U patent/CN214837530U/en active Active
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