Large-torque hydraulic motor and braking system with same

Abstract

The utility model relates to a large torque hydraulic motor and a braking system with the same, the motor comprises a shaft end cylinder body, a locking disc, a shaft end shell, a connecting plate, a stator ring and an oil path block which are sequentially arranged on the periphery of the shaft end cylinder body, an indirect plate arranged in the middle of the stator ring, and a braking mechanism arranged between the connecting plate and the shaft end cylinder body, or a tail end cylinder body arranged below the indirect plate, and the brake mechanism is arranged between the tail end cylinder body and the oil path block. The brake mechanism is movably connected with the inner wall of the connecting plate and / or the brake disc fixing frame, during working, a distance is kept between the end face of the shaft end cylinder body and the end face of the brake mechanism, or a distance is kept between the end face of the tail end cylinder body and the end face of the brake mechanism, and during braking, the end face of the shaft end cylinder body is meshed with the end face of the brake mechanism, or the end face of the tail end cylinder body is meshed with the end face of the brake mechanism. The clutch function of the radial plunger hydraulic motor is achieved through the additionally arranged hydraulic brake, the axial installation size is small, the overall weight gain is small, the braking safety is improved, and the braking effect is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic motors, in particular to a large torque hydraulic motor and a brake system having the same. Background Art

[0002] At present, the braking system of high-torque hydraulic motors mainly drives the brake pads to press and separate through hydraulic cylinders and springs, and the motor is braked by the friction of the brake pads. This braking form is completely a traditional braking mode. The disadvantage of this braking mode is that the braking force depends on many factors. In addition to its own factors, it is also greatly affected by external factors. For example, the surface roughness of the brake pads, the thrust of the hydraulic cylinder, the ambient temperature and humidity, etc., the braking force of the brake pads is often not large. With the long-term use of the brake system, the brake pads gradually wear out, the braking force decreases, and it is often easy to cause the motor to slip during braking, the braking is unreliable, and it is often easy to cause damage to the motor and other mechanisms, which is easy to leave serious safety hazards. In addition, the brake pad braking system is generally complex in structure and often occupies a large space. After a failure, it generally requires professional maintenance by the manufacturer. The fault repair is cumbersome, the life is short, and the cost is high. Utility Model Content

[0003] The utility model provides a large-torque hydraulic motor and a brake system having the same, which are used to solve the problems that traditional brake pads are easily affected by external factors during braking, have low braking force, are easy to wear and slip, have safety hazards during braking, are complicated to repair after failure, have a short lifespan and high costs.

[0004] The purpose of the utility model and the solution to its technical problem are achieved by adopting the following technical solutions.

[0005] The utility model provides a large torque hydraulic motor, which comprises: a rotatable first shaft end cylinder body, a first locking disk, a first shaft end housing, a connecting plate, a first stator ring and a first oil circuit block which are sequentially arranged on the outer peripheral surface of the first shaft end cylinder body along the rotatable axis direction, a first indirect plate arranged in the middle of the first stator ring, and a first brake mechanism arranged between the connecting plate and the first shaft end cylinder body; the first brake mechanism is movably connected to the inner wall of the connecting plate along the rotatable axis direction; when the large torque hydraulic motor is in a working state, the connecting plate is connected to external high-pressure hydraulic oil to push the first brake mechanism to be located in a working state position, and a first working distance is maintained between the end face of the first shaft end cylinder body and the end face opposite to the first brake mechanism; when the large torque hydraulic motor is in a braking state, the first brake mechanism is located in a braking state position, and the end face of the first shaft end cylinder body and the end face opposite to the first brake mechanism are in a meshing state.

[0006] As an optional embodiment, the first braking mechanism includes: a first brake disc and a first reset drive mechanism; a first spline is provided at the movable connection between the first brake disc and the first shaft end housing, and the first brake disc is movably connected to the first shaft end housing through the matching first spline; the first reset drive mechanism is arranged in the accommodating space enclosed by the first shaft end housing and the first brake disc, and the travel direction of the first reset drive mechanism is consistent with the direction of the rotatable axis.

[0007] As an optional implementation, the first reset drive mechanism includes a spring structure and a shaft end screw plug; the spring structure is arranged between the first shaft end housing and the first brake disc.

[0008] As an optional implementation, a first end face tooth is provided on the end face of the first brake disc facing the first shaft end cylinder body, a first tooth groove is provided on the end face corresponding to the first shaft end cylinder body, and the first end face tooth is adapted to the first tooth groove.

[0009] As an optional embodiment, a control oil circuit for driving the first brake disc to move along the rotatable axial direction is provided between the connecting plate and the first brake disc, and a pair of first brake disc sealing rings for sealing the control oil circuit are respectively provided at both ends of the first brake disc.

[0010] As an optional implementation, a connecting plate plug for sealing the control oil circuit is provided on the outer side of the connecting plate.

[0011] As an optional implementation, the first brake release bolt replaces the shaft end screw plug, and one side of the first brake release bolt is screwed into the first brake disc.

[0012] The utility model also provides a large torque hydraulic motor, which comprises: a rotatable second shaft end cylinder body, a second locking plate, a second shaft end housing, a second stator ring, a second oil circuit block, a second indirect plate arranged in the middle of the second stator ring, a tail end cylinder body located below the second indirect plate, and a second brake mechanism arranged between the tail end cylinder body and the second oil circuit block; the second brake mechanism is arranged in the second oil circuit block, and is movably connected to the inner wall of the second oil circuit block through a second spline arranged on the second brake mechanism, and the braking direction of the second brake mechanism is consistent with the rotatable axis direction; when the high torque hydraulic motor is in a working state, the second oil circuit block is connected to external high pressure hydraulic oil to push the second brake mechanism to be in a working state position, and the end face of the tail end cylinder body and the end face opposite to the second brake mechanism maintain a working state spacing; when the high torque hydraulic motor is in a braking state, the second brake mechanism is in a braking state position, and the end face of the tail end cylinder body and the end face opposite to the second brake mechanism are in a meshing state.

[0013] As an optional embodiment, the second braking mechanism includes: a brake disc fixing frame, a second brake disc and a second reset drive mechanism; the brake disc fixing frame is fixed in the second oil circuit block by a fixing member, and the second brake disc is movably connected to the second oil circuit block along the rotatable axis direction by an adaptive second spline; the second reset drive mechanism is arranged in the accommodating space enclosed by the second brake disc and the second oil circuit block, and the travel direction of the second reset drive mechanism is consistent with the rotatable axis direction.

[0014] As an optional implementation, the second reset drive mechanism includes a brake spring and a second brake disc cock; the brake spring is arranged between the second oil circuit block and the second brake disc.

[0015] As an optional implementation, a second end face tooth is provided on the end face of the second brake disc facing the rear end cylinder body, a second tooth groove is provided on the end face corresponding to the rear end cylinder body, and the second end face tooth is adapted to the second tooth groove.

[0016] As an optional embodiment, a control oil circuit for driving the second brake disc to move along the rotatable axial direction is provided between the second oil circuit block, the brake disc fixing frame and the second brake disc, and second brake disc sealing rings for sealing the control oil circuit are respectively provided at both ends of the second brake disc.

[0017] As an optional implementation, an oil circuit block cock for sealing the control oil circuit is provided on the outward side of the second oil circuit block.

[0018] As an optional implementation, the second brake release bolt replaces the second brake disc plug, and one side of the second brake release bolt is screwed into the second brake disc.

[0019] The utility model also provides a braking system with a high-torque hydraulic motor. The braking system includes the high-torque hydraulic motor described in any one of the above embodiments.

[0020] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Based on the above technical solution, the present invention has at least one of the following advantages and effects:

[0021] 1. The utility model provides a high torque hydraulic motor, which includes: a rotatable first shaft end cylinder body, a first locking plate, a first shaft end housing, a connecting plate, a first stator ring and a first oil circuit block arranged in sequence on the outer peripheral surface of the first shaft end cylinder body along the rotatable axis direction, a first indirect plate arranged in the middle of the first stator ring, and a first brake mechanism arranged between the connecting plate and the first shaft end cylinder body; the first brake mechanism is movably connected to the inner wall of the connecting plate along the rotatable axis direction; when the high torque hydraulic motor is in a working state, the connecting plate is connected to the external high pressure hydraulic oil to push the first brake mechanism to be in a working state position, and the end face of the first shaft end cylinder body and the end face opposite to the first brake mechanism maintain a first working distance; when the high torque hydraulic motor is in a braking state, the first brake mechanism is in a braking state position, and the end face of the first shaft end cylinder body and the end face opposite to the first brake mechanism are in a meshing state. The utility model realizes the clutch control function of the radial piston hydraulic motor when rotating by adding a hydraulic clutch, increases the installation size in the axial direction to be small, makes the overall weight of the hydraulic motor small, and is convenient for flexible application and arrangement.

[0022] 2. The utility model provides a first reset drive mechanism, which includes a spring structure and a shaft end plug; the spring structure is arranged between the first shaft end housing and the first brake disc; and by replacing the shaft end plug with a first brake release bolt, one side of the first brake release bolt is screwed into the first brake disc, so that the first brake release bolt releases the abnormal braking state and resets the brake release state, thereby improving the safety of the additional hydraulic clutch in the radial piston hydraulic motor clutch control.

[0023] 3. The utility model also provides a large torque hydraulic motor, which comprises: a rotatable second shaft end cylinder body, a second locking plate, a second shaft end housing, a second stator ring, a second oil circuit block, a second indirect plate arranged in the middle of the second stator ring, a tail end cylinder body located below the second indirect plate, and a second brake mechanism arranged between the tail end cylinder body and the second oil circuit block; the second brake mechanism is arranged in the second oil circuit block, and is movably connected to the inner wall of the second oil circuit block through a second spline arranged on the second brake mechanism, and the braking direction of the second brake mechanism is consistent with the rotatable axis direction; when the high torque hydraulic motor is in a working state, the second oil circuit block is connected to the external high pressure hydraulic oil to push the second brake mechanism to be in a working state position, and the end face of the tail end cylinder body and the end face opposite to the second brake mechanism maintain a working state spacing; when the high torque hydraulic motor is in a braking state, the second brake mechanism is in a braking state position, and the end face of the tail end cylinder body and the end face opposite to the second brake mechanism are in a meshing state. The utility model realizes the clutch control function when the radial piston hydraulic motor rotates by adding a hydraulic clutch, increases the installation size in the axial direction to be small, makes the overall weight increase of the hydraulic motor small, and facilitates flexible application and arrangement.

[0024] 4. The utility model also includes a second braking mechanism: a brake disc fixing frame, a second brake disc and a second reset drive mechanism; the brake disc fixing frame is fixed in the second oil circuit block by a fixing piece, and the second brake disc is movably connected to the second oil circuit block along the rotatable axis direction through an adaptive second spline; the second reset drive mechanism is arranged in the accommodating space enclosed by the second brake disc and the second oil circuit block, and the stroke direction of the second reset drive mechanism is consistent with the rotatable axis direction; the second reset drive mechanism includes a brake spring and a second brake disc plug; the brake spring is arranged between the second oil circuit block and the second brake disc, and the second brake disc plug is replaced by a second brake release bolt, and one side of the second brake release bolt is screwed into the second brake disc, so that the second brake release bolt releases the brake abnormal state and resets the brake release state, thereby improving the safety of the added hydraulic clutch in the radial piston hydraulic motor clutch control.

[0025] 5. The utility model also provides a brake system with a large torque hydraulic motor, and the brake system includes the large torque hydraulic motor described above. The utility model realizes the clutch control function when the radial piston hydraulic motor rotates through the clutch formed by the additional large torque hydraulic motor, increases the installation size in the axial direction, makes the overall weight of the hydraulic motor smaller, and facilitates flexible application and layout.

[0026] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above-mentioned structure and other purposes, features and advantages of the present invention more obvious and easy to understand, the following is a preferred embodiment, which is described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 AA is a schematic diagram of the cross-section structure of a high-torque hydraulic motor of this embodiment;

[0028] Figure 2 for Figure 1 A structural diagram of the working state of the braking structure of the first braking mechanism of the medium and large torque hydraulic motor;

[0029] Figure 3 for Figure 1 A structural diagram of the braking state of the braking structure of the first braking mechanism of the medium and large torque hydraulic motor;

[0030] Figure 4 for Figure 1 A structural diagram of the braking principle and working state of the first brake mechanism of a medium-to-large torque hydraulic motor;

[0031] Figure 5 for Figure 1 A structural diagram of the braking principle and braking state of the first braking mechanism of a medium-to-large torque hydraulic motor;

[0032] Figure 6 for Figure 1 A structural diagram of the braking state of the first brake mechanism of the medium-to-large torque hydraulic motor in the mechanical release brake structure;

[0033] Figure 7 for Figure 1 A schematic diagram of the structure of the first brake mechanism of the medium-large torque hydraulic motor being restored to the working state in the mechanical release brake structure;

[0034] Figure 8 is a structural schematic diagram of a cross section of a high-torque hydraulic motor of this embodiment;

[0035] Fig. 9 for Figure 8 A schematic diagram of the cross-section BB structure of a high-torque hydraulic motor of this embodiment;

[0036] Fig.10 for Figure 8 A cross-sectional CC structural schematic diagram of a high torque hydraulic motor of this embodiment;

[0037] Fig.11 A1-A1 is a schematic structural diagram of another high-torque hydraulic motor of the present embodiment;

[0038] Fig.12 for Fig.11 A schematic diagram of the structure of the second brake mechanism of the medium-to-large torque hydraulic motor in a braking state and a structural diagram of the working state;

[0039] Fig.13 for Fig.11 A schematic diagram of the structure of the second brake mechanism of the medium and large torque hydraulic motor in a braking state;

[0040] Fig.14 for Fig.11 A schematic diagram of the structure of the second brake mechanism of the medium-to-large torque hydraulic motor in the second working state;

[0041] Fig.15 for Fig.11 A schematic diagram of the structure of the second brake mechanism of the medium and large torque hydraulic motor in the braking state;

[0042] Fig.16 for Fig.11 A second schematic diagram of the structure of the braking principle and working state of the second braking mechanism of the medium and large torque hydraulic motor;

[0043] Fig.17 for Fig.11 A second schematic diagram of the structure of the braking principle and braking state of the second braking mechanism of the medium and large torque hydraulic motor;

[0044] Fig.18 for Fig.11 A structural diagram of the braking state of the second brake mechanism of the medium-to-large torque hydraulic motor in the mechanical release brake structure;

[0045] Fig.19 for Fig.11 A schematic diagram of the structure of the second brake mechanism of the medium and large torque hydraulic motor being restored to the working state in the mechanical release brake structure;

[0046] Fig. 20 is a schematic structural diagram of a cross section of another high-torque hydraulic motor of this embodiment;

[0047] Fig.21 for Fig. 20 A schematic diagram of the cross-sectional structure HH of a high-torque hydraulic motor of this embodiment;

[0048] Fig. 22 for Fig. 20 FIG. 2 is a schematic diagram of the cross-sectional structure HH of another high-torque hydraulic motor of this embodiment.

[0049] Description of Figure Numbers:

[0050] 1: First shaft end cylinder 11: First tooth groove

[0051] 2: First indirect plate

[0052] 3: First locking disc 4: First shaft end housing

[0053] 5: Connecting plate 51: Connecting plate plug

[0054] 6: First oil block 7: First stator ring

[0055] 8: First brake mechanism

[0056] 81: First brake disc 811: First spline

[0057] 812: First brake disc seal 813: First end face gear

[0058] 82: First reset drive mechanism 821: Spring structure

[0059] 822: Shaft end plug 823: First release brake bolt

[0060] r1: first working distance D1: first braking stroke

[0061] 91: Second shaft end cylinder 92: Second indirect plate

[0062] 93: Second locking disc 94: Second shaft end housing

[0063] 95: Tail end cylinder 951: Second tooth groove

[0064] 96: Second oil block 961: Oil block seal

[0065] 9612: Oil block plug 97: Second stator ring

[0066] 98: Second brake mechanism 981: Brake disc fixing bracket

[0067] 9811: Second spline

[0068] 982: Second brake disc 983: Brake spring

[0069] 984: Fixing part 985: Second brake disc seal

[0070] 9611: Second brake disc plug 9611a: Brake disc plug seal

[0071] 986: Second end face tooth 987: Second brake release bolt

[0072] r2: second working distance D2: second braking stroke DETAILED DESCRIPTION

[0073] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the specific implementation method, structure, characteristics and effects proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0074] Embodiment 1:

[0075] The utility model provides a large torque hydraulic motor, such as Figures 1 to 10 As shown, a large torque hydraulic motor comprises: a rotatable first shaft end cylinder body 1, a first locking disk 3, a first shaft end housing 4, a connecting plate 5, a first stator ring 7 and a first oil circuit block 6 which are sequentially arranged on the outer peripheral surface of the first shaft end cylinder body 1 along the rotatable axis direction, a first indirect plate 2 arranged in the middle of the first stator ring 7, and a first brake mechanism 8 arranged between the connecting plate 5 and the first shaft end cylinder body 1; the first brake mechanism 8 is movably connected to the inner wall of the connecting plate 5 along the rotatable axis direction; the first brake mechanism 8 comprises: a first brake disc 81 and a first reset drive mechanism 82; a first spline 811 is provided at the movable connection between the first brake disc 81 and the first shaft end housing 4, and the first brake disc 81 is movably connected to the first shaft end housing 4 through the matching first spline 811; the first reset drive mechanism 82 comprises a spring structure 821 and a shaft end screw plug 822, and the above-mentioned shaft end screw plug 822 can be a screw plug; the spring structure 821 is arranged between the first shaft end housing 4 and the first brake disc 81. The spring structure can be a coil spring with a tension or compression function. The first reset drive mechanism 82 is arranged in the accommodation space enclosed by the first shaft end housing 4 and the first brake disc 81, and the stroke direction of the first reset drive mechanism 82 is consistent with the rotatable axis direction. The first brake disc 81 is provided with a first end face tooth 813 on the end face facing the first shaft end cylinder body 1, and a first tooth groove 11 is provided on the corresponding end face of the first shaft end cylinder body 1, and the first end face tooth 813 is adapted to the first tooth groove 11. A control oil circuit for driving the first brake disc 81 to move along the rotatable axis direction is provided in the connecting plate 5 and between the first brake disc 81, and a pair of first brake disc sealing rings 812 for sealing the control oil circuit are respectively provided at the positions at both ends of the sealing control oil circuit on the first brake disc 81. A connecting plate plug 51 for sealing the control oil circuit is provided on the outer side of the connecting plate 5. When the high-torque hydraulic motor is in a working state, the connecting plate 5 is connected to the external high-pressure hydraulic oil to push the first brake mechanism 8 to the working state position, and the end face of the first shaft end cylinder body 1 and the end face opposite to the first brake mechanism 8 maintain a first working distance r1; when the high-torque hydraulic motor is in a braking state, the first brake mechanism 8 is in a braking state position, and the end face of the first shaft end cylinder body 1 and the end face opposite to the first brake mechanism 8 are in a meshing state.

[0076] As an optional implementation, Figure 6 , Figure 7As shown, the first brake release bolt 823 replaces the shaft end screw plug 822, and one side of the first brake release bolt 823 is screwed into the first brake disc 81. Specifically, the first brake release bolt 823 has a thread, and the thread structure on the first brake release bolt 823 cooperates with the thread structure in the first brake disc 81.

[0077] The product in this embodiment is a TA series high torque hydraulic motor and a brake system having the hydraulic motor. Geometric displacement: 1256~13200cm 3 / rev, maximum output torque: 6.5~68.2kN·m. It can be divided into five specifications: TA50, TA70, TA100, TA140, TA210, 21 grades, each grade can be divided into two major categories according to the locking plate motor and spline motor, mainly based on full displacement and half displacement to classify its high torque hydraulic motor and the brake system with its hydraulic motor. In this embodiment, different models are classified based on displacement, unit torque, rated speed and the maximum speed of the hydraulic motor during operation and its corresponding maximum pressure. The model classification is shown in Table 1 below:

[0078] The TA series of high-torque hydraulic motors have the characteristics of good low-speed stability, large output torque, good starting performance, etc., and are compact in structure, easy to maintain, and have various output modes, making them highly competitive in the market. Figures 1 to 5 As shown,

[0079] The connecting plate 5 and the first shaft end housing 4 are fixed to the housing of the high-torque hydraulic motor. The first brake disc 81 is movably connected to the first shaft end housing 4 through the first spline 811. The first brake disc 81 can slide left and right along the inner wall axis of the connecting plate 5 under the action of hydraulic pressure or spring force (the sliding distance is the first braking stroke D1). During the operation of the hydraulic motor, the first shaft end cylinder body 1 rotates under the action of the plunger, and the remaining structural parts are in a stationary state. When the hydraulic motor is in the working state, high-pressure hydraulic oil for controlling the brake is introduced through the control oil circuit through the X interface to push the first brake disc 81 to the left to the working state position. At this time, a certain distance is maintained between the first tooth groove 11 of the first shaft end cylinder body 1 and the first end face tooth 813 of the first brake disc 81. The first working distance r1 in the working state position can ensure the normal operation of the motor. Figures 1 to 3. Further preferably, the first end face tooth 813 of the first brake disc 81 is a rectangular end face tooth to ensure that when it is engaged with the first tooth groove 11, the meshing state can be changed to an inlay state, which can ensure the stability of the meshing and the small wear between the two end faces. At this time, the spring structure 821 in the first reset drive mechanism 82 is in a compressed state. When the hydraulic motor is in a braking state, the control oil circuit is closed through the X interface, and the high-pressure hydraulic oil for controlling the brake is stopped. The first brake disc 81 slides to the right under the action of the spring structure 821. At this time, the rectangular end face tooth on the first brake disc 81 is embedded in the corresponding first tooth groove 11 on the cylinder body 1 at the first shaft end to achieve braking. Figure 3 and Figure 5 Among them, the first shaft end cylinder body 1 is not limited to including cylinder body S (TA100B-001) or cylinder body C (TA100B-002), and the material is not limited to the material of iron material with hardness such as ductile iron (QT700-2) or steel material.

[0080] When the TA's high-torque hydraulic motor is working, the first shaft end cylinder 1 rotates under the action of the plunger, and the remaining structural parts are in a stationary state. The first brake disc 81 is connected to the first shaft end housing 4 through the first spline 811. Under the action of the hydraulic pressure or elastic force in the motor, the first brake disc 81 can slide left and right along the inner wall of the connecting plate 5 in the axial direction. The sliding distance can be determined according to the actual situation as shown in the first braking stroke D1 in the figure. Here, it can be set to a range of 10mm to 5mm, and can be preferably set to 6mm according to the actual situation, so as to ensure that the first brake disc 81 can stably and quickly slide to the target position in a smaller braking stroke of 6mm to perform stable braking on the first shaft end cylinder 1. When the hydraulic motor is in working state, external high-pressure hydraulic oil for controlling the brake is introduced through the control oil circuit interface X to push the first brake disc 81 to slide leftward to the working state position. At this time, a first working distance r1 is maintained between the end face of the first shaft end cylinder body 1 and the end face of the first brake disc 81. The first working distance r1 can generally be determined according to actual conditions. In this embodiment, the first working distance r1 can be set in the range of 5mm to 1mm, and can be preferably 3mm according to actual conditions, which is sufficient to ensure the normal rotation of the large torque hydraulic motor. Figure 4 The schematic diagram of the structure of the first brake mechanism of the high torque hydraulic motor in the working state of the braking principle. At this time, the elastic component is in a compressed state; when the hydraulic motor needs to brake, the oil circuit interface X is controlled to be closed, and the input of high-pressure hydraulic oil is stopped. The first brake disc 81 slides to the right under the action of the brake elastic component, and the rectangular first end face tooth 813 on the first brake disc 81 is embedded in the corresponding first tooth groove 11 on the end face of the first shaft end cylinder body 1, realizing sensitive, efficient, stable and safe braking. Figure 5Structural diagram of the braking state. When a braking abnormality occurs and the high-pressure hydraulic oil controlling the brake cannot open the first brake disc 81, the first brake release bolt 823 provided on the window B can be used to reset it and restore its normal working state. Figure 6 and Figure 7 Structural schematic diagram of the mechanical release of the braking structure during the braking of the medium and large torque hydraulic motor assembly and the restoration to the working state.

[0081] Table 1: List of TA series high torque hydraulic motors and brake systems with the same hydraulic motors

[0082]

[0083] In the hydraulic motor of TA, the connecting plate 5 is a TA100 connecting plate, and the material used can be 42CrMo high-quality alloy structural steel, which has excellent characteristics such as high strength, high toughness, and wear resistance. The first shaft end housing 4 is a TA100 shaft end housing, which is made of QT700-2 material. The first brake disc seal 812 provided thereon is not limited to at least one pair of Gray seals. The first brake disc 81 can be made of 42CrMo high-quality alloy structural steel, and also includes two pairs of sealing plugs, the size of one pair of sealing plugs can be preferably G 3 / 8", and the size of the other pair of sealing plugs can be preferably G1 / 4". The first reset drive mechanism 82 includes an elastic component, and the elastic component can be selected from a spring structure 821. The material of the brake spring in the spring structure can be 65Mn. The first brake release bolt 823 can be selected from a brake release bolt M10, and its material grade can be 8.8 grade. The number can be selected from one or more according to actual conditions, and is not limited here.

[0084] Embodiment 2:

[0085] The utility model also provides a large torque hydraulic motor, such as Figures 11 to 22As shown, the high torque hydraulic motor comprises: a rotatable second shaft end cylinder body 91, on the outer peripheral surface of the second shaft end cylinder body 91, a second locking plate 93, a second shaft end housing 94, a second stator ring 97, a second oil passage block 96 are sequentially arranged along the rotatable axis direction, a second indirect plate 92 arranged in the middle of the second stator ring 97, a tail end cylinder body 95 located below the second indirect plate 92, and a second brake mechanism 98 arranged between the tail end cylinder body 95 and the second oil passage block 96; the second brake mechanism 98 is arranged in the second oil passage block 96, and is connected to the inner wall of the second oil passage block 96 by the second brake mechanism 98. The second spline 9811 is movably connected, and the braking direction of the second brake mechanism 98 is consistent with the direction of the rotatable axis; the second brake mechanism 98 includes: a brake disc fixing frame 981, a second brake disc 982, and a second reset drive mechanism; the brake disc fixing frame 981 is fixed in the second oil circuit block 96 by a fixing member 984, and the second brake disc 982 is movably connected with the second oil circuit block 96 along the rotatable axis through an adaptive second spline 9811; the second reset drive mechanism includes a brake spring 983 and a second brake disc valve 9611; the brake spring 983 is arranged between the second oil circuit block 96 and the second brake disc 982. The second reset drive mechanism is arranged in the accommodating space enclosed by the second brake disc 982 and the second oil circuit block 96, and the stroke direction of the second reset drive mechanism is consistent with the direction of the rotatable axis. The second oil circuit block 96 is also provided with an oil circuit block sealing seal 961, such as Fig.12 and Fig.13 As shown. The second end face teeth 986 are provided on the end face of the second brake disc 982 facing the tail end cylinder body 95, and the corresponding end face of the tail end cylinder body 95 is provided with a second tooth groove 951, and the second end face teeth 986 are adapted to the second tooth groove 951. A control oil circuit for driving the second brake disc 982 to move along the rotatable axis is provided between the second oil circuit block 96, the brake disc fixing frame 981 and the second brake disc 982, and second brake disc sealing rings 985 for sealing the control oil circuit are respectively provided at the positions of the two ends of the sealing control oil circuit on the second brake disc 982. An oil circuit block cock 9612 for sealing the control oil circuit is provided on the outward side of the second oil circuit block 96. When the high-torque hydraulic motor is in a working state, the second oil circuit block 96 is connected to the external high-pressure hydraulic oil to push the second brake mechanism 98 to the working state position, and the end face of the tail end cylinder body 95 and the end face opposite to the second brake mechanism 98 maintain a working state spacing; when the high-torque hydraulic motor is in a braking state, the second brake mechanism 98 is in a braking state position, and the end face of the tail end cylinder body 95 and the end face opposite to the second brake mechanism 98 are in a meshing state.

[0086] As an optional implementation, Fig.18 , Fig.19As shown, the second brake release bolt 987 replaces the second brake disc cock 9611, wherein the second brake disc cock 9611 also includes a brake disc cock seal 9611a, and the brake disc cock seal 9611a uses an annular cock seal. One side of the second brake release bolt 987 is screwed into the second brake disc 982. Specifically, the second brake release bolt 987 has a thread, and the thread structure on the second brake release bolt 987 cooperates with the thread structure in the second brake disc 982.

[0087] The product in this embodiment is a TB series high torque hydraulic motor and a brake system having the hydraulic motor. Geometric displacement: 15100~52800cm 3 / rev, maximum output torque: 78.8~275.8kN·m. There are four specifications: TB280, TB400, TB560, TB840, 18 grades, each grade can be divided into two major categories according to the locking plate motor and spline motor, mainly based on displacement, unit torque, rated speed 1, maximum speed, maximum pressure, maximum torque 2, maximum power (including intermittent state) to classify different models, the model classification is shown in Table 2 below.

[0088] The TB series of high-torque hydraulic motors have an internal brake structure at the end of the tail shaft, which not only has the advantages of good low-speed stability, large output torque, and good starting performance, but also has the advantages of sensitive, efficient and stable hydraulic braking. The overall structure of the hydraulic motor is compact, easy to maintain, and has various output modes, making it widely applicable. Figures 11 to 22 As shown, the brake disc fixing frame 981 is fixed to the second oil circuit block 96 by a fixing member 984 (such as but not limited to a hexagon socket screw), and the second brake disc 982 is movably connected to the second oil circuit block 96 through a second spline 9811. The second brake disc 982 can slide left and right along the inner wall of the brake disc fixing frame 981 in the axial direction of rotation under the action of hydraulic pressure or spring force, and the sliding distance is as shown in the second braking stroke D2 in the figure, and the sliding distance of D2 can range from 5mm to 10mm according to actual design, and can be further preferably 7mm.

[0089] Table 2: List of TB series high torque hydraulic motors and brake systems with the same hydraulic motors

[0090]

[0091] During the operation of the high-torque hydraulic motor TB, the tail end cylinder 95 rotates, and the second oil circuit block 96, the brake disc fixing frame 981 and the second brake disc 982 are all in a stationary state. When the hydraulic motor is in a working state, the tail end cylinder 95 rotates, and the other parts are in a fixed and stationary state. At this time, high-pressure hydraulic oil for controlling the brake is introduced through the X interface on the control oil circuit, pushing the second brake disc 982 to the right to be in a working state position. At this time, a certain second working spacing r2 is maintained between the second tooth groove 951 set on the end face of the tail end cylinder 95 and the second end face tooth 986 on the corresponding end face of the second brake disc 982. The spacing range of the second working spacing r2 is smaller than the size of the second braking stroke D2. The spacing range of the second working spacing r2 is not limited to the range of 1mm to 5mm to ensure the normal operation of the motor, such as Figures 11 to 17 As shown. As a preferred embodiment, the second end face tooth 986 here can adopt an end face tooth of a rectangular structure. At this time, the brake spring 983 of the second reset drive mechanism is in a compressed state. When the high-torque hydraulic motor TB is in a braking state, the X interface on the control oil circuit is in a closed state. At this time, the X interface on the control oil circuit stops supplying high-pressure hydraulic oil for controlling the brake, and the second brake disc 982 slides to the left under the spring force of the brake spring 983 until the rectangular second end face tooth 986 on the second brake disc 982 is embedded in the corresponding second tooth groove 951 on the tail end cylinder body 95, thereby realizing the braking of the second brake disc 982, as shown in FIG. Figures 11 to 17 .

[0092] When the second brake disc 982 brakes abnormally, that is, the high-pressure hydraulic oil controlled by the brake control oil circuit cannot open the engaged second brake disc 982 and the tail end cylinder 95 when it is turned on, the second brake release bolt 987 at the window B can be used to reset the second brake disc 982 to restore its working state position, so that the TB model series high-torque hydraulic motor can be restored to its working state. Fig.19 shown.

[0093] In the hydraulic motor of TB, the brake disc fixing frame 981 included in the second brake mechanism 98 can be made of 42CrMo material. The second brake disc sealing ring 985 for sealing the control oil circuit can be an annular sealing ring, not limited to the use of a Gly ring, and the specific sleeve and sleeve layer are not specifically limited here. The Gly ring can be respectively arranged at the positions at both ends of the sealing control oil circuit on the second brake disc 982, and is used to seal the control oil circuit at both ends of the second brake disc 982. The tail end cylinder body 95 is made of ductile iron material specified in QT700-2, or it can also be made of steel material with equivalent hardness, strength and corrosion resistance. The second brake disc 982 is not limited to the use of 42CrMo high-quality alloy structural steel with excellent properties such as high strength, high toughness and wear resistance. The hexagon socket screw included in its fixing part 984 can be M10* 60, such as not limited to grade 10.9, the number is multiple sets, not limited to 20 sets. The size model of the second brake plug 9611 is G 3 / 8", not limited to setting the plug to 2 sets according to actual conditions. The second oil circuit block (96) is not limited to the ductile iron material specified in QT700-2, and the size of its plug can be a size such as G1 / 4". The material of the brake spring 983 is not limited to the material such as 65Mn, and the second brake release bolt 987 can be a brake release bolt M10, and its material grade is not limited to grade 8.8. The number of the brake release bolt M10 can be one or more, and is not limited here.

[0094] Embodiment 3:

[0095] This embodiment also provides a braking system with a high-torque hydraulic motor, which includes the high-torque hydraulic motor described in Example 1 and / or Example 2. When the braking mechanism of the high-torque hydraulic motor is provided as a clutch component on the braking system of the high-torque hydraulic motor, the braking mechanism may include at least one first braking mechanism 8, or may also include at least one second braking mechanism 98, or may also include at least one first braking mechanism 8 and at least one second braking mechanism 98. For the specific structural arrangement of the clutch mechanism composed of the above-mentioned braking mechanism, please refer to the contents of the above-mentioned embodiments. In actual implementation, changes are made in the above-mentioned specific structure, and braking or non-braking operation is performed under the control of the control oil circuit (controller) to meet the specific structural arrangement of the clutch component, which will not be described in detail here.

Claims

1. A high torque hydraulic motor, characterized in that: include: A rotatable first shaft end cylinder body (1), a first locking plate (3), a first shaft end housing (4), a connecting plate (5), a first stator ring (7) and a first oil passage block (6) arranged in sequence on the outer peripheral surface of the first shaft end cylinder body (1) along the rotatable axial direction, a first indirect plate (2) arranged in the middle of the first stator ring (7), and a first braking mechanism (8) arranged between the connecting plate (5) and the first shaft end cylinder body (1); The first braking mechanism (8) is movably connected to the inner wall of the connecting plate (5) along the rotatable axial direction; When the high-torque hydraulic motor is in a working state, the connecting plate (5) is connected to external high-pressure hydraulic oil to push the first brake mechanism (8) to a working state position, and a first working distance is maintained between the end surface of the first shaft end cylinder body (1) and the end surface opposite to the first brake mechanism (8); When the high-torque hydraulic motor is in a braking state, the first braking mechanism (8) is located in a braking state position, and the end surface of the first shaft end cylinder (1) and the end surface opposite to the first braking mechanism (8) are in a meshing state.

2. The high torque hydraulic motor according to claim 1, characterized in that: The first brake mechanism (8) comprises: a first brake disc (81) and a first reset drive mechanism (82); A first spline (811) is provided at a movable connection between the first brake disc (81) and the first shaft end housing (4); the first brake disc (81) is movably connected to the first shaft end housing (4) via the adapted first spline (811); The first reset drive mechanism (82) is arranged in a housing space enclosed by the first shaft end housing (4) and the first brake disc (81), and the stroke direction of the first reset drive mechanism (82) is consistent with the direction of the rotatable axis.

3. The high torque hydraulic motor according to claim 2, characterized in that: The first reset drive mechanism (82) comprises a spring structure (821) and a shaft end screw plug (822); the spring structure (821) is arranged between the first shaft end housing (4) and the first brake disc (81).

4. The high torque hydraulic motor according to claim 2, characterized in that: A first end face tooth (813) is provided on the end face of the first brake disc (81) facing the first shaft end cylinder body (1), and a first tooth groove (11) is provided on the end face corresponding to the first shaft end cylinder body (1), and the first end face tooth (813) is adapted to the first tooth groove (11).

5. The high torque hydraulic motor according to claim 2, characterized in that: A control oil circuit for driving the first brake disc (81) to move along a rotatable axial direction is provided between the connecting plate (5) and the first brake disc (81), and a pair of first brake disc sealing rings (812) for sealing the control oil circuit are provided at the two ends of the first brake disc (81).

6. The high torque hydraulic motor according to claim 5, characterized in that: A connecting plate thread plug (51) for sealing the control oil circuit is provided on the outer side of the connecting plate (5).

7. The high torque hydraulic motor according to claim 3, characterized in that: The first brake release bolt (823) replaces the shaft end screw plug (822), and one side of the first brake release bolt (823) is screwed into the first brake disc (81).

8. A high torque hydraulic motor, characterized in that: include: A rotatable second shaft end cylinder body (91), wherein a second locking disk (93), a second shaft end housing (94), a second stator ring (97), a second oil passage block (96), a second indirect plate (92) disposed in the middle of the second stator ring (97), a tail end cylinder body (95) located below the second indirect plate (92), and a second brake mechanism (98) disposed between the tail end cylinder body (95) and the second oil passage block (96) are sequentially arranged on the outer peripheral surface of the second shaft end cylinder body (91) along the rotatable axis direction; The second brake mechanism (98) is disposed in the second oil passage block (96) and is movably connected to the inner wall of the second oil passage block (96) via a second spline (9811) disposed on the second brake mechanism (98); the braking direction of the second brake mechanism (98) is consistent with the direction of the rotatable axis; When the high-torque hydraulic motor is in a working state, the second oil circuit block (96) is connected to the external high-pressure hydraulic oil to push the second brake mechanism (98) to be in a working state position, and the end surface of the tail end cylinder body (95) and the end surface opposite to the second brake mechanism (98) maintain a working state spacing; When the high-torque hydraulic motor is in a braking state, the second braking mechanism (98) is located in a braking state position, and the end surface of the tail end cylinder (95) and the end surface opposite to the second braking mechanism (98) are in a meshing state.

9. The high torque hydraulic motor according to claim 8, characterized in that: The second brake mechanism (98) comprises: a brake disc fixing frame (981), a second brake disc (982) and a second reset drive mechanism; The brake disc fixing frame (981) is fixed in the second oil circuit block (96) via a fixing member (984), and the second brake disc (982) is movably connected to the second oil circuit block (96) along a rotatable axis direction via a matching second spline (9811); The second reset drive mechanism is arranged in a housing space enclosed by the second brake disc (982) and the second oil circuit block (96), and the stroke direction of the second reset drive mechanism is consistent with the direction of the rotatable axis.

10. The high torque hydraulic motor according to claim 9, characterized in that: The second reset drive mechanism comprises a brake spring (983) and a second brake disc cock (9611); the brake spring (983) is arranged between the second oil circuit block (96) and the second brake disc (982).

11. The high torque hydraulic motor according to claim 9, characterized in that: A second end face tooth (986) is provided on the end face of the second brake disc (982) facing the rear end cylinder body (95), and a second tooth groove (951) is provided on the corresponding end face of the rear end cylinder body (95), and the second end face tooth (986) is adapted to the second tooth groove (951).

12. The high torque hydraulic motor according to claim 9, characterized in that: A control oil circuit for driving the second brake disc (982) to move along a rotatable axis is provided between the second oil circuit block (96), the brake disc fixing frame (981) and the second brake disc (982), and second brake disc sealing rings (985) for sealing the control oil circuit are provided at positions at both ends of the second brake disc (982).

13. The high torque hydraulic motor according to claim 12, characterized in that: An oil passage block cock (9612) for sealing the control oil passage is provided on the outward side of the second oil passage block (96).

14. The high torque hydraulic motor according to claim 10, characterized in that: The second brake release bolt (987) replaces the second brake disc cock (9611), and one side of the bolt of the second brake release bolt (987) is screwed into the second brake disc (982).

15. A braking system with a high torque hydraulic motor, characterized in that: It comprises a high-torque hydraulic motor as claimed in any one of claims 1 to 14.

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