Bidirectional gear motor

Abstract

The invention discloses a bidirectional gear motor, and relates to the technical field of gear motors, the bidirectional gear motor comprises a bidirectional gear shell, a front end cover and a rear end cover, the front end cover and the rear end cover are symmetrically arranged on openings in two sides of the bidirectional gear shell and form a shell, and limiting seat parts for accommodating bearings are inserted into the front end cover and the rear end cover; the limiting seat part is further connected with the strengthening device in a sealed mode. The gear part is located in the shell and penetrates through the strengthening device and the limiting seat part to be inserted into the bearing. The bearings are inserted into and taken out of the bearings in the first sleeve and the second sleeve, the positions of the bearings can be limited, meanwhile, assembly and disassembly of the limiting seat component are facilitated, the driven shaft is inserted into the gear ring, the gear teeth can be driven to rotate, and the gear teeth of the gear ring can continuously make contact with the protruding parts to be used for limiting the positions of the protruding parts. When the gear motor works, the screw is driven to keep a tightened state, and in the working process of the gear motor, the screw is always kept in a firm state through correction of the teeth, so that the problem of loosening of the screw is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of gear motors, in particular to a bidirectional gear motor. Background Art

[0002] As the power element of hydraulic system, gear motor is widely used in hydraulic system of construction machinery such as loaders, excavators, cranes, etc. at home and abroad. Gear motor has the characteristics of simple structure, small size, light weight, strong self-priming force, and insensitivity to oil contamination. It is widely used in the field of hydraulic technology, especially in the construction machinery industry.

[0003] In the prior art, the bearing is arranged in the cavity of the front cover and the rear cover by means of an interference fit, and the bearing needs to be continuously knocked during assembly so that it can be slowly inserted into the cavity of the front cover and the rear cover. First, during the knocking process, the bearing may be partially deformed, resulting in friction resistance of the internal ball when rotating, and the resistance of the gear parts inserted in the bearing also increases during rotation, affecting the transmission efficiency of the equipment. Although the bearings assembled by means of an interference fit have advantages such as large load-bearing capacity and good impact resistance, they also have disadvantages such as high requirements on the machining accuracy of the mating surface and inconvenient assembly and disassembly. In addition, the bidirectional gear motor will suffer large losses during long-term use, resulting in the need to replace the bearings at regular intervals, resulting in the problem that the bearings in the prior art are difficult to remove. Summary of the invention

[0004] The purpose of the present invention is to provide a bidirectional gear motor, which has a bearing that is inserted into and removed from the bearings in sleeve one and sleeve two, so that the bearing position can be limited, and the assembly and disassembly of the limit seat component is also convenient. The ring gear is inserted into the driven shaft and can drive the teeth to rotate. The teeth of the ring gear will continuously contact the protrusion to limit the position of the protrusion and drive the screw to remain in a tightened state. During the operation of the gear motor, the screw can always remain in a firm state by correcting the teeth, thereby preventing the screw from loosening.

[0005] To achieve the above object, the present invention provides the following technical solution: a bidirectional gear motor, comprising a bidirectional gear housing, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are symmetrically arranged on two side openings of the bidirectional gear housing to form a housing, and a limit seat component for accommodating a bearing is inserted into the front end cover and the rear end cover, and the limit seat component is also sealed with a reinforcing device, and the gear component is located in the housing and passes through the reinforcing device and the limit seat component to be inserted into the bearing;

[0006] Anti-loosening components are also installed on the front cover and the rear cover. The anti-loosening components and the limiting seat components are connected to the reinforcing device. The anti-loosening components and the reinforcing device are used to prevent the limiting seat components from detaching from the front cover or the rear cover during vibration, and the reinforcing device is used to seal the gap between the bidirectional gear housing, the front cover and the rear cover.

[0007] Furthermore, the interior of the bidirectional gear housing is two connected chambers, namely a left chamber and a right chamber, wherein a symmetrical inlet hole and an outlet hole are opened on the bidirectional gear housing between the left chamber and the right chamber, and a flange assembled on the bidirectional gear housing covers the inlet hole and the outlet hole.

[0008] Furthermore, the front end cover and the rear end cover are both provided with cavity one and cavity two corresponding to the left cavity and the right cavity, the limit seat component covers cavity one and cavity two, cavity one and cavity two are connected through a middle hole, the front end cover and the rear end cover are both penetrated by their respective cavities one, and cavity one is also provided with a retaining ring to resist sleeve two and the bearing.

[0009] Further, the position limiting seat component includes a ring sheet, a sleeve 1 and a sleeve 2, the ring sheet is provided with two symmetrical through holes, the sleeve 1 and the sleeve 2 are fixed on the same side of the ring sheet, and the sleeve 1 and the sleeve 2 are concentrically arranged with the corresponding through holes, and a sealing groove 1 is further provided on the same side of the ring sheet and the sleeve 1 and the sleeve 2, and one end of the bearing is inserted into the sleeve 1 and the sleeve 2 and abuts against the ring sheet;

[0010] The sleeve 1 and the sleeve 2 are inserted into the corresponding cavity 1 and the cavity 2, the front end cover and the rear end cover of each ring piece are fitted, and the sealing ring in the sealing groove 1 is also squeezed and deformed by the end faces of the front end cover and the rear end cover.

[0011] Furthermore, the anti-loosening component includes a transmission shaft, a transmission sleeve and a screw rod, one end of the two transmission shafts respectively penetrates into the corresponding front end cover and rear end cover, the screw rod penetrates the support plate in the middle hole, the transmission shaft and the screw rod respectively penetrate into the two ends of the transmission sleeve, the transmission sleeve rotates synchronously with the screw rod and slides along the axis of the screw rod, and the transmission sleeve and the support plate are also connected by a spring;

[0012] The transmission sleeve and the transmission shaft are also connected via a spring. A protrusion is fixed on the outer wall of the transmission sleeve. A notch groove is also provided on the middle hole above the support plate, and the notch groove is used to accommodate the protrusion.

[0013] Furthermore, the reinforcement device includes a reinforcement ring, a second sealing groove and a screw sleeve. The second sealing groove is provided on the reinforcement ring, and a through hole aligned with the ring sheet is also provided on the reinforcement ring. The screw sleeve is fixed on the reinforcement ring, and the reinforcement ring abuts against the ring sheet. The sealing ring embedded in the second sealing groove is sealed and connected to the inner walls of the first cavity and the second cavity, and the screw sleeve passes through the ring sheet and is threadedly connected to the screw.

[0014] Further, the gear component includes a driving shaft and a driven shaft, the driving shaft is located in the first cavity, and both ends of the driving shaft pass through the through holes of the reinforcing ring and the ring sheet and extend to the outside of the housing through the bearing, and the driven shaft is located in the second cavity, and both ends of the driven shaft pass through the through holes of the reinforcing ring and the ring sheet and are inserted into the bearing;

[0015] The gears between the driving shaft and the driven shaft are meshed, and the gears are located at the inlet hole and the outlet hole. The high-pressure liquid flowing in from the inlet hole drives the gears to rotate and is discharged from the outlet hole.

[0016] Furthermore, the cavity 2 is also movably connected to a gear ring, on which teeth with equal spacing are fixed, and the teeth penetrate into the notch groove and contact the raised portion, so as to limit the reverse rotation of the raised portion.

[0017] Furthermore, the maximum distance between the protrusion and the transmission sleeve is smaller than the width of the teeth.

[0018] Technical effects and advantages of the present invention:

[0019] 1. By inserting the bearing into the bearing in the sleeve one and the sleeve two and taking out the bearing, and coordinating the connection between the anti-loosening component and the limit seat component, the bearing position can be limited, and the assembly and disassembly of the limit seat component is also convenient, without the need to assemble the bearing by knocking, thus preventing the deformation of the bearing, and realizing the anti-loosening function through the rotational power of the shaft.

[0020] 2. Sleeve 1 and sleeve 2 are inserted into corresponding cavity 1 and cavity 2, and the sealing ring in sealing groove 1 is also squeezed and deformed by the end faces of the front cover and the rear cover to achieve preliminary internal sealing. The sealing rings arranged on the openings on both sides of the bidirectional gear housing are deformed under the squeeze of the front cover and the rear cover to achieve secondary sealing. Through double-layer sealing, the sealing of the entire gear motor is enhanced.

[0021] 3. The gear ring is inserted into the driven shaft and can drive the teeth to rotate. During the rotation of the gear ring, the teeth of the gear ring will continuously contact the raised part to limit the position of the raised part and drive the screw to remain tightened. During the operation of the gear motor, the screw is always kept firm by correcting the teeth to prevent the screw from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the overall structure diagram of the present invention;

[0023] Figure 2 It is a cross-sectional internal structure diagram of the bidirectional gear housing, the front end cover and the rear end cover of the present invention;

[0024] Figure 3 It is a partial exploded view of the present invention;

[0025] Figure 4 For the present invention Figure 3 A magnified image of point A;

[0026] Figure 5 A bottom view showing the contact between the gear ring and the raised portion of the present invention;

[0027] Figure 6The structure diagram of the anti-loosening component of the present invention is that the protrusion is located inside the notch groove;

[0028] Figure 7 It is a diagram showing the internal structure of the protrusion of the anti-loosening component of the present invention being separated from the notch groove;

[0029] Figure 8 It is a bottom view of the anti-loosening component of the present invention.

[0030] In the figure:

[0031] 1. Bidirectional gear housing; 11. Inlet hole; 12. Exit hole; 2. Front cover; 21. Retaining ring; 3. Rear cover; 4. Limit seat component; 41. Ring plate; 42. Sleeve 1; 43. Sleeve 2; 44. Sealing groove 1; 5. Anti-loosening component; 51. Transmission shaft; 52. Transmission sleeve; 521. Protrusion; 53. Screw; 531. Support plate; 6. Strengthening device; 61. Strengthening ring; 62. Sealing groove 2; 63. Screw sleeve; 7. Gear component; 71. Driving shaft; 72. Driven shaft; 8. Gear ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Reference Figure 1-Figure 8 , which is the first embodiment of the present invention, provides a bidirectional gear motor, including a bidirectional gear housing 1, a front end cover 2 and a rear end cover 3, the front end cover 2 and the rear end cover 3 are symmetrically arranged on the two side openings of the bidirectional gear housing 1 to form a housing, the front end cover 2 and the rear end cover 3 are both inserted with a limit seat component 4 for accommodating a bearing, the limit seat component 4 is also sealed with a strengthening device 6, and a gear component 7 is located in the housing and passes through the strengthening device 6 and the limit seat component 4 to be inserted into the bearing;

[0034] The front cover 2 and the rear cover 3 are also provided with an anti-loosening component 5, which is connected to the limiting seat component 4 and the reinforcing device 6. The anti-loosening component 5 and the reinforcing device 6 are used to prevent the limiting seat component 4 from being separated from the front cover 2 or the rear cover 3 during vibration, and the reinforcing device 6 is used to seal the gap between the bidirectional gear housing 1, the front cover 2 and the rear cover 3. The reinforcing device 6 seals the gap to prevent liquid from flowing out of the gap.

[0035] The gear component 7 of the device passes through the front cover 2 and the rear cover 3 respectively, so that both ends of a shaft are located outside the motor, achieving the purpose of bidirectional output.

[0036] The bearing is set in the limit seat component 4, instead of being set in the cavity of the front cover 2 and the rear cover 3 by an interference fit as in the prior art, and the bearing needs to be continuously knocked during assembly so that it can be slowly inserted into the cavity of the front cover 2 and the rear cover 3. First, during the knocking process, the bearing may be partially deformed, resulting in friction resistance of the internal ball when rotating, and the resistance of the gear component 7 inserted in the bearing during rotation is also increased, affecting the transmission efficiency of the equipment. Although the bearings assembled by interference fit have advantages such as large load-bearing capacity and good impact resistance, they also have disadvantages such as high requirements on the machining accuracy of the mating surface and inconvenient assembly and disassembly. Since the two-way gear motor suffers large losses during long-term use, it is necessary to replace the bearings at regular intervals, resulting in the problem that the bearings in the prior art are difficult to remove.

[0037] By inserting the bearing into the limiting seat component 4 and connecting the anti-loosening component 5 with the limiting seat component 4, the position of the bearing can be limited, and the assembly and disassembly of the limiting seat component 4 are also convenient.

[0038] The interior of the bidirectional gear housing 1 is two connected chambers, namely the left chamber and the right chamber, wherein the bidirectional gear housing 1 between the left chamber and the right chamber is provided with symmetrical inlet holes 11 and outlet holes 12, and the flange assembled on the bidirectional gear housing 1 covers the inlet holes 11 and the outlet holes 12. The high-pressure solution flows into the bidirectional gear housing 1 from the inlet hole 11, drives the gear component 7 to rotate, and is discharged from the outlet hole 12.

[0039] The front end cover 2 and the rear end cover 3 are both provided with cavity one and cavity two corresponding to the left cavity and the right cavity, and the limit seat component 4 covers cavity one and cavity two. Cavity one and cavity two are connected through a middle hole. The front end cover 2 and the rear end cover 3 are both penetrated by their respective cavities one. Cavity one is also provided with a retaining ring 21 that resists sleeve two 43 and the bearing, and the retaining ring 21 is used to limit the bearing in cavity one.

[0040] The position limiting seat component 4 includes a ring piece 41, a sleeve 1 42 and a sleeve 2 43. The ring piece 41 is provided with two symmetrical through holes. The sleeve 1 42 and the sleeve 2 43 are fixed on the same side of the ring piece 41, and the sleeve 1 42 and the sleeve 2 43 are concentrically arranged with the corresponding through holes. A sealing groove 1 44 is also provided on the same side of the ring piece 41, the sleeve 1 42 and the sleeve 2 43. One end of the bearing is inserted into the sleeve 1 42 and the sleeve 2 43 and abuts against the ring piece 41.

[0041] Sleeve 1 42 and sleeve 2 43 are inserted into corresponding cavity 1 and cavity 2, and the front end cover 2 and rear end cover 3 of each ring piece 41 are fitted together, and the sealing ring in the sealing groove 1 44 is also squeezed and deformed by the end faces of the front end cover 2 and the rear end cover 3. The sealing ring in the sealing groove 1 44 realizes preliminary internal sealing, and the sealing rings arranged on the openings on both sides of the bidirectional gear housing 1 are deformed under the squeeze of the front end cover 2 and the rear end cover 3 to realize secondary sealing. Through double-layer sealing, the sealing performance of the entire gear motor is enhanced.

[0042] The anti-loosening component 5 includes a transmission shaft 51, a transmission sleeve 52 and a screw 53. One end of the two transmission shafts 51 penetrates into the corresponding front cover 2 and rear cover 3 respectively. The screw 53 penetrates the support plate 531 in the middle hole. The transmission shaft 51 and the screw 53 penetrate into the two ends of the transmission sleeve 52 respectively. The transmission sleeve 52 rotates synchronously with the screw 53 and slides along the axis of the screw 53. The transmission sleeve 52 and the support plate 531 are also connected by a spring.

[0043] The transmission sleeve 52 is also connected to the transmission shaft 51 via a spring. A protrusion 521 is fixed on the outer wall of the transmission sleeve 52 . A notch groove is further provided on the middle hole above the support plate 531 , and the notch groove is used to accommodate the protrusion 521 .

[0044] The position of the screw rod 53 is limited by the support plate 531, and it can only rotate but cannot be raised or lowered, while the transmission sleeve 52 can rotate synchronously with the screw rod 53 and the transmission sleeve 52 can slide up and down along the screw rod 53. A guide bar is fixed on the outer wall of the screw rod 53, and a notch is provided on the transmission sleeve 52 for the guide bar to pass through, thereby realizing the above-mentioned action, and the spring supports the transmission sleeve 52. In the absence of interference from external force, the spring pushes the transmission sleeve 52 to move upward, and the transmission sleeve 52 is rotated around the protrusion 521 to be inserted into the notch groove.

[0045] Similarly, a guide strip is also provided on the transmission shaft 51. When the transmission shaft 51 is pressed and rotated, the spring is compressed, and the guide strip of the transmission shaft 51 is inserted into the notch of the transmission sleeve 52. At this time, the rotating transmission shaft 51 can drive the transmission sleeve 52 and the screw 53 to rotate synchronously, and then the screw sleeve 63 and the screw 53 can be assembled together.

[0046] Without the interference of external force, the spring makes the transmission shaft 51 rise, and the guide bar of the transmission shaft 51 is separated from the notch. At this time, the transmission shaft 51 is rotated without driving the transmission sleeve 52 to rotate, thereby avoiding misoperation and vibration that causes the transmission shaft 51 to rotate without transmitting power to the transmission sleeve 52.

[0047] The strengthening device 6 includes a strengthening ring 61, a sealing groove 62 and a screw sleeve 63. The sealing groove 62 is provided on the strengthening ring 61. The strengthening ring 61 is also provided with a through hole aligned with the ring piece 41. The screw sleeve 63 is fixed on the strengthening ring 61. The strengthening ring 61 abuts against the ring piece 41. The sealing ring embedded in the sealing groove 62 is sealed and connected to the inner walls of the cavity one and the cavity two. The screw sleeve 63 passes through the ring piece 41 and is threadedly connected to the screw 53.

[0048] The sealing ring in the second sealing groove 62 is sealed with the bottom surface of the ring piece 41, and the double-layer sealing realizes the triple-layer sealing, which can effectively improve the sealing performance of the whole equipment.

[0049] The gear component 7 includes a driving shaft 71 and a driven shaft 72. The driving shaft 71 is located in the first cavity. Both ends of the driving shaft 71 pass through the through holes of the reinforcing ring 61 and the ring piece 41 and extend to the outside of the housing through the bearing. The driven shaft 72 is located in the second cavity. Both ends of the driven shaft 72 pass through the through holes of the reinforcing ring 61 and the ring piece 41 and are inserted into the bearing.

[0050] The gears between the driving shaft 71 and the driven shaft 72 are meshed, and the gears are located at the inlet hole 11 and the outlet hole 12 . The high-pressure liquid flowing in from the inlet hole 11 drives the gears to rotate and is discharged from the outlet hole 12 .

[0051] The second cavity is also movably connected to the gear ring 8, on which teeth with equal spacing are fixed. The teeth penetrate into the notch groove and contact the protrusion 521 to limit the reverse rotation of the protrusion 521. The maximum distance between the protrusion 521 and the transmission sleeve 52 is less than the width of the teeth.

[0052] The gear ring 8 is inserted into the driven shaft 72 and can drive the teeth to rotate. During the rotation of the gear ring 8, the teeth of the gear ring 8 will continuously contact the protrusion 521. Through the above-mentioned rotating teeth, the side of the protrusion 521 is continuously contacted. When the screw 53 is loose, the protrusion 521 will rotate in the opposite direction. Since the teeth are in contact with the protrusion 521, the protrusion 521 is pushed to rotate in the opposite direction, which is used to limit the position of the protrusion 521 and drive the screw 53 to remain in a tightened state. During the operation of the gear motor, factors such as vibration make the protrusion 521 move. By correcting the teeth, the screw 53 can always remain in a firm state to prevent the screw 53 from loosening.

[0053] When disassembly is required, first disassemble the two-way gear housing 1, the front cover 2 and the rear cover 3, then remove the driving shaft 71 and the driven shaft 72, and then press the transmission shaft 51 to insert the guide bar of the transmission shaft 51 into the transmission sleeve 52 of the transmission sleeve 52, and drive the transmission sleeve 52 to descend, so that the protrusion 521 disengages from the notch groove, and the transmission sleeve 52, the protrusion 521 and the screw 53 are driven to rotate by the rotation of the transmission shaft 51. At this time, the rotation of the protrusion 521 will push the teeth and the gear ring 8 to rotate in the opposite direction, and the screw 53 rotates and disengages from the screw sleeve 63 to realize the disassembly of the strengthening device 6, and then remove the limit seat component 4 and take out the bearings in the sleeve 1 42 and the sleeve 2 43 to realize the bearing replacement.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bidirectional gear motor, comprising a bidirectional gear housing (1), a front end cover (2) and a rear end cover (3), characterized in that: The front end cover (2) and the rear end cover (3) are symmetrically arranged on the openings on both sides of the bidirectional gear housing (1) to form a housing; a limit seat component (4) for accommodating a bearing is inserted into each of the front end cover (2) and the rear end cover (3); the limit seat component (4) is also sealedly connected to the strengthening device (6); the gear component (7) is located in the housing and passes through the strengthening device (6) and the limit seat component (4) to be inserted into the bearing; The front end cover (2) and the rear end cover (3) are also provided with an anti-loosening component (5), the anti-loosening component (5) and the limiting seat component (4) are connected with the reinforcing device (6), the anti-loosening component (5) and the reinforcing device (6) are used to prevent the limiting seat component (4) from detaching from the front end cover (2) or the rear end cover (3) when vibrating, and the reinforcing device (6) is used to seal the gap between the bidirectional gear housing (1), the front end cover (2) and the rear end cover (3).

2. The bidirectional gear motor according to claim 1, characterized in that: The interior of the bidirectional gear housing (1) is composed of two interconnected chambers, namely a left chamber and a right chamber, wherein a symmetrical inlet hole (11) and an outlet hole (12) are provided on the bidirectional gear housing (1) between the left chamber and the right chamber, and a flange mounted on the bidirectional gear housing (1) covers the inlet hole (11) and the outlet hole (12).

3. The bidirectional gear motor according to claim 2, characterized in that: The front end cover (2) and the rear end cover (3) are both provided with a cavity one and a cavity two corresponding to the left cavity and the right cavity, the limit seat component (4) covers the cavity one and the cavity two, the cavity one and the cavity two are connected through a central hole, the front end cover (2) and the rear end cover (3) are both penetrated by their respective cavities one, and the cavity one is also provided with a retaining ring (21) for resisting against the sleeve two (43) and the bearing.

4. The bidirectional gear motor according to claim 3, characterized in that: The position limiting seat component (4) comprises a ring plate (41), a sleeve 1 (42) and a sleeve 2 (43); the ring plate (41) is provided with two symmetrical through holes; the sleeve 1 (42) and the sleeve 2 (43) are fixed on the same side of the ring plate (41); the sleeve 1 (42) and the sleeve 2 (43) are concentrically arranged with the corresponding through holes; a sealing groove 1 (44) is further provided on the same side of the ring plate (41) and the sleeve 1 (42) and the sleeve 2 (43); one end of the bearing is inserted into the sleeve 1 (42) and the sleeve 2 (43) and abuts against the ring plate (41); The sleeve one (42) and the sleeve two (43) are inserted into the corresponding cavity one and cavity two, and the front end cover (2) and the rear end cover (3) of the ring piece (41) are respectively fitted, and the sealing ring in the sealing groove one (44) is also squeezed and deformed by the end faces of the front end cover (2) and the rear end cover (3).

5. The bidirectional gear motor according to claim 4, characterized in that: The anti-loosening component (5) comprises a transmission shaft (51), a transmission sleeve (52) and a screw rod (53), one end of the two transmission shafts (51) respectively penetrates into the corresponding front end cover (2) and rear end cover (3), the screw rod (53) penetrates through the support plate (531) in the middle hole, the transmission shaft (51) and the screw rod (53) respectively penetrate into the two ends of the transmission sleeve (52), the transmission sleeve (52) and the screw rod (53) rotate synchronously and slide along the axis of the screw rod (53), and the transmission sleeve (52) and the support plate (531) are also connected by a spring; The transmission sleeve (52) and the transmission shaft (51) are also connected via a spring. A protrusion (521) is fixed on the outer wall of the transmission sleeve (52). A notch groove is also provided on the middle hole above the support plate (531). The notch groove is used to accommodate the protrusion (521).

6. The bidirectional gear motor according to claim 5, characterized in that: The reinforcing device (6) comprises a reinforcing ring (61), a second sealing groove (62) and a screw sleeve (63). The reinforcing ring (61) is provided with the second sealing groove (62). The reinforcing ring (61) is also provided with a through hole aligned with the ring sheet (41). The screw sleeve (63) is fixed on the reinforcing ring (61). The reinforcing ring (61) abuts against the ring sheet (41). The sealing ring embedded in the second sealing groove (62) is sealedly connected to the inner walls of the first cavity and the second cavity. The screw sleeve (63) passes through the ring sheet (41) and is threadedly connected to the screw rod (53).

7. The bidirectional gear motor according to claim 6, characterized in that: The gear component (7) comprises a driving shaft (71) and a driven shaft (72), wherein the driving shaft (71) is located in cavity one, and two ends of the driving shaft (71) pass through the through holes of the reinforcing ring (61) and the ring sheet (41) and pass through the bearing to extend to the outside of the housing, and the driven shaft (72) is located in cavity two, and two ends of the driven shaft (72) pass through the through holes of the reinforcing ring (61) and the ring sheet (41) and are inserted into the bearing; The gears between the driving shaft (71) and the driven shaft (72) are meshed, and the gears are located at the inlet hole (11) and the outlet hole (12). The high-pressure liquid flowing in from the inlet hole (11) drives the gears to rotate and is discharged from the outlet hole (12).

8. The bidirectional gear motor according to claim 7, characterized in that: The cavity 2 is also movably connected to a gear ring (8), on which teeth are fixed at equal intervals, and the teeth penetrate into the notch groove and contact the raised portion (521), so as to limit the reverse rotation of the raised portion (521).

9. The bidirectional gear motor according to claim 8, characterized in that: The maximum distance between the protruding portion (521) and the transmission sleeve (52) is smaller than the width of the teeth.

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