Stably-connected electric hydraulic pump

Abstract

The invention relates to the technical field of electric hydraulic pumps, in particular to a stably-connected electric hydraulic pump which comprises an electric hydraulic pump body, a motor is arranged at the right end of the electric hydraulic pump body, a valve is arranged on the front side of the electric hydraulic pump body, and an oil outlet pipe is arranged at the upper end of the electric hydraulic pump body; when the connecting hard pipe is pulled in use, the movable frame can be driven to synchronously slide leftwards on the supporting seat and compress the first spring, and the arranged connecting hose gradually becomes straight from the original loose state, so that a buffer space is provided for the connecting hard pipe to slide leftwards; according to the electric hydraulic pump, the pulling force generated when the connecting hard pipe is pulled is conveniently relieved, the situation that the connecting position of the oil outlet pipe and the electric hydraulic pump body is loosened after being used for a long time due to the fact that a traditional oil outlet pipe is directly dragged with large force is avoided, and the connecting stability between the electric hydraulic pump body and the oil outlet pipe is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electric hydraulic pumps, and in particular to an electric hydraulic pump with a stable connection. Background Art

[0002] An electric hydraulic pump is a hydraulic component that provides pressurized liquid for hydraulic transmission. It is a type of pump. Its function is to convert the mechanical energy of a power machine (such as an electric motor and an internal combustion engine) into the pressure energy of a liquid.

[0003] After searching, the patent with application number CN202222291348.3 discloses "an electric hydraulic pump", including: an electric hydraulic pump body, one side of which is equipped with two connecting pipes; a limiting mechanism, which is used to limit and fix the connecting pipes, and the limiting mechanism includes a support plate, four positioning plates, two extrusion rings, a connecting plate, a fixing frame and a screw.

[0004] However, in the use of the above patent, although the connecting pipe is located inside the extrusion ring by utilizing the mutual cooperation of the support plate, the positioning plate, the extrusion ring, the connecting plate, the fixing frame and the screw, and the screw pushes the connecting plate to move, which is beneficial to limit the two connecting pipes at the same time, but since the external pulling force may be large and the connecting pipe lacks a buffer structure, once the pulling force is too large, the connecting pipe may still be separated from the limiting pressure of the connecting plate, directly causing damage to the connection between the connecting pipe and the electric hydraulic pump body. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that although the connecting pipe is located inside the extrusion ring and the screw pushes the connecting plate to move by utilizing the mutual cooperation of the support plate, the positioning plate, the extrusion ring, the connecting plate, the fixing frame and the screw, which is beneficial to limit the two connecting pipes at the same time, due to the fact that the external pulling force may be large and the connecting pipe lacks a buffer structure, once the pulling force is too large, the connecting pipe may still be separated from the limiting pressure of the connecting plate, directly causing damage to the connection between the connecting pipe and the electric hydraulic pump body, and a stable electric hydraulic pump is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A firmly connected electric hydraulic pump comprises an electric hydraulic pump body, a motor is arranged at the right end of the electric hydraulic pump body, a valve is arranged on the front side of the electric hydraulic pump body, and an oil outlet pipe is arranged at the upper end of the electric hydraulic pump body;

[0008] A protection mechanism for protecting the oil outlet pipe is also provided, the protection mechanism comprising a connecting hose fixedly installed on the left end of the oil outlet pipe, a connecting hard pipe fixedly installed on the left end of the connecting hose, a movable frame fixedly installed on the lower end of the connecting hard pipe, a support seat slidably installed on the lower end of the movable frame, a right end of the support seat fixedly installed on the electric hydraulic pump body, a spring 1 fixedly installed on the lower side of the left end of the movable frame, and a left end of the spring 1 fixedly installed on the support seat;

[0009] An anti-entanglement mechanism is also provided to prevent the connecting hose from being entangled when being pulled. The anti-entanglement mechanism includes a ring sleeved on the outside of the connecting hose, a telescopic rod 2 is fixedly installed on the lower end of the ring, and the lower end of the telescopic rod 2 is fixedly installed on the movable frame, and there are no less than three rings and telescopic rods 2.

[0010] Preferably, the left side of the connecting rigid tube is movably installed on the support seat, a buffer plate is provided on the upper inner side of the support seat corresponding to the lower side of the connecting rigid tube, and no less than three convex strips are fixedly installed on the right side of the buffer plate corresponding to the lower end of the connecting rigid tube.

[0011] Preferably, a telescopic rod 1 is fixedly installed at the lower end of the buffer plate, a connecting plate is fixedly installed at the lower end of the telescopic rod, and the connecting plate is slidably installed on the support seat.

[0012] Preferably, a spring 2 is sleeved on the outer side of the telescopic rod 1, the upper and lower ends of the spring 2 are respectively fixedly connected to the buffer plate and the connecting plate, a connecting rod 1 is hinged on the right end of the connecting plate, and the right end of the connecting rod 1 is hinged to the movable frame.

[0013] Preferably, the connecting rigid tube is provided with limiting grooves at both the front and rear ends, and a limiting hole is provided at the right end of the limiting groove.

[0014] Preferably, the left side of the support seat is symmetrically provided with limit plates on the front and back sides, the limit plates are L-shaped, and limit blocks are fixedly installed on the corresponding limit holes on the right end of the limit plates.

[0015] Preferably, the ends of the limit plates that are away from each other are fixedly mounted with connecting rod 2, the ends of the connecting rod 2 that are away from each other are penetrated with an inclined panel that is slidably mounted, and the inclined panel is slidably mounted on the left end of the support seat.

[0016] Preferably, a spring three is sleeved on the outer side of the second connecting rod, and the two ends of the spring three are respectively fixedly connected to the limit plate and the inclined plate, and a spring four is fixedly installed between the inclined plates, and top rods are fixedly installed on the front and rear sides of the upper end of the connecting plate corresponding to the inclined plates.

[0017] Preferably, through holes are opened on the corresponding limit holes at the front and rear ends of the connecting rigid tube, nozzle tubes are fixedly installed on the corresponding through holes symmetrically at the front and rear ends of the right end of the support seat, the lower ends of the nozzle tubes are connected to hollow rubber bags, and the left ends of the hollow rubber bags are fixedly connected to the support seat.

[0018] Preferably, a pressed plate is fixedly installed on the right end of the hollow rubber bag, springs five are fixedly installed on the upper and lower sides of the left end of the pressed plate, the left ends of the springs five are fixedly connected to the support seat, and main pressing plates are fixedly installed on the front and rear ends of the movable frame corresponding to the pressed plates.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. In the present invention, when the connecting hard pipe is pulled during use, the movable frame will be driven to slide to the left on the support seat synchronously, compressing the spring 1, and the arranged connecting hose will gradually become straightened from the original loose state, providing a buffer space for the connecting hard pipe to slide to the left, which is convenient for alleviating the pulling force when the connecting hard pipe is pulled, avoiding the traditional oil outlet pipe being directly pulled strongly, resulting in the loosening of the connection between the oil outlet pipe and the electric hydraulic pump body due to long-term use, and ensuring the connection stability between the electric hydraulic pump body and the oil outlet pipe.

[0021] 2. In the present invention, when the pulling force is too large, the connecting hard tube will continue to drive the movable frame to move to the left. Under the action of the connecting rod 1, the connecting plate is pushed to slide upward on the support seat. The connecting plate drives the telescopic rod 1, the buffer plate and the spring 2 to continue to slide upward. The buffer plate will fit on the lower end of the connecting hard tube. The telescopic rod 1 and the spring 2 will be gradually shrunk and compressed, causing the buffer plate to fit tightly on the lower end of the connecting hard tube. As the connecting hard tube continues to slide to the left, the convex strip will be driven to slide to the left synchronously. The convex strip will contact and squeeze with the blocking strip on the buffer plate, which is beneficial to blocking the connecting hard tube with a large pulling force, reducing the pulling force of the connecting hard tube, allowing it to stop gradually, avoiding subsequent pulling and loosening damage to the connecting hose and the oil outlet pipe, and ensuring the connection stability between the electric hydraulic pump body and the oil outlet pipe.

[0022] 3. In the present invention, if the pulling force of the connecting hard pipe is very large, the convex strip breaks through the obstruction of the buffer plate, and the connecting hard pipe continues to move to the left. At this time, the connecting plate will continue to drive the top rod to slide upward, and the top rod will squeeze the inclined plate, so that the inclined plates on both sides slide in a direction close to each other on the support seat, compressing the spring four, and the inclined plates on both sides will also drive the connecting rod two and the limit plate to synchronously approach the connecting hard pipe until the end of the limit plate that approaches each other contacts the surface of the connecting hard pipe, and the limit plate stops moving. As the inclined plates continue to approach each other, the inclined plates will Slide on connecting rod two and compress spring three. When the limit slot moves to the side where the limit plates are close to each other, spring three will release the pressure, thereby pushing the limit plates on both sides to be stuck in the limit slots and slide in the limit slots until the limit blocks on the limit plates are stuck in the limit holes. The limit plates will limit the connecting hard pipe and prevent it from continuing to slide to the left, thereby avoiding the subsequent connecting hose and oil outlet pipe from being loosened and damaged due to continued pulling due to excessive pulling force, which is beneficial to ensuring the stability of the connection between the electric hydraulic pump body and the oil outlet pipe.

[0023] 4. In the present invention, the limit block is clamped in the limit hole, which ensures that the limit plate can be stably clamped in the limit groove and avoids the limit plate from falling out of the limit groove.

[0024] 5. In the present invention, when the movable frame moves to the left, it will also drive the main pressure plate to move to the left synchronously. The main pressure plate squeezes the pressed plate, and the pressed plate squeezes the spring five and the hollow rubber bag, so that the gas in the hollow rubber bag is ejected from the nozzle tube, and the gas is sprayed through the through hole. Since the through hole and the limiting hole are interconnected, it is beneficial to clear the blockage in the limiting hole, thereby ensuring that the subsequent limiting block can be smoothly clamped in the limiting hole, ensuring that the limiting plate can smoothly cooperate with the limiting groove to limit the connecting hard pipe.

[0025] 6. In the present invention, the telescopic rod 2 and the collar can be adaptively extended and retracted according to the slack or stretched state of the connecting hose, thereby preventing the excessively long connecting hose from being entangled together in the slack state and being damaged once it is stretched by the pulling force. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention when viewed from above;

[0028] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present invention from top view;

[0029] Figure 4 For the present invention Figure 1 A partially enlarged structural diagram of the electric hydraulic pump body, connecting hard pipe, and support base connection;

[0030] Figure 5 For the present invention Figure 4 A partially enlarged structural diagram of the connection between the middle connecting hard pipe, the support seat and the buffer plate;

[0031] Figure 6 For the present invention Figure 2 A partially enlarged structural diagram of the connection between the middle connecting hard pipe and the support seat;

[0032] Figure 7 For the present invention Figure 3 A partially enlarged structural diagram of the connection between the middle connecting hard pipe and the support seat;

[0033] Figure 8 For the present invention Figure 5 The structural diagram at A in the middle;

[0034] Fig. 9 For the present invention Figure 5 Schematic diagram of the structure at B in the middle;

[0035] Fig.10 For the present invention Figure 7 Schematic diagram of the structure at C in the middle;

[0036] In the figure: 1. Electric hydraulic pump body; 2. Motor; 3. Valve; 4. Oil outlet pipe;

[0037] Protection mechanism: 5, connecting hose; 6, connecting hard pipe; 7, movable frame; 8, support seat; 9, spring one; 10, buffer plate; 101, convex strip; 11, telescopic rod one; 12, connecting plate; 13, spring two; 14, connecting rod one; 15, limiting groove; 16, limiting hole; 17, limiting plate; 18, limiting block; 19, connecting rod two; 20, inclined panel; 21, spring three; 22, spring four; 23, ejector rod; 24, through hole; 25, nozzle tube; 26, hollow rubber bag; 27, pressed plate; 28, spring five; 29, main pressing plate;

[0038] Anti-entanglement mechanism: 30, ring; 31, telescopic rod two. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] Reference Figure 1-Figure 10, a firmly connected electric hydraulic pump comprises an electric hydraulic pump body 1, a motor 2 is arranged at the right end of the electric hydraulic pump body 1, a valve 3 is arranged on the front side of the electric hydraulic pump body 1, and an oil outlet pipe 4 is arranged at the upper end of the electric hydraulic pump body 1; a protective mechanism for protecting the oil outlet pipe 4 is also provided, and the protective mechanism comprises a connecting hose 5 fixedly installed on the left end of the oil outlet pipe 4, a connecting hard pipe 6 is fixedly installed on the left end of the connecting hose 5, a movable frame 7 is fixedly installed on the lower end of the connecting hard pipe 6, a support seat 8 is slidably installed on the lower end of the movable frame 7, the right end of the support seat 8 is fixedly installed on the electric hydraulic pump body 1, a spring 9 is fixedly installed on the lower side of the left end of the movable frame 7, and the left end of the spring 9 is fixedly installed On the support seat 8, the left side of the connecting hard pipe 6 is movably installed on the support seat 8, and a buffer plate 10 is provided on the upper inner side of the support seat 8 corresponding to the lower side of the connecting hard pipe 6. The lower end of the connecting hard pipe 6 is fixedly installed with no less than three convex strips 101 corresponding to the right side of the buffer plate 10, and a telescopic rod 11 is fixedly installed at the lower end of the buffer plate 10, and a connecting plate 12 is fixedly installed at the lower end of the telescopic rod 11. The connecting plate 12 is slidably installed on the support seat 8, and a spring 2 13 is sleeved on the outer side of the telescopic rod 11. The upper and lower ends of the spring 2 13 are respectively fixedly connected to the buffer plate 10 and the connecting plate 12. A connecting rod 14 is hinged at the right end of the connecting plate 12, and the right end of the connecting rod 14 is hinged to the movable frame 7. The connecting rigid tube 6 is provided with a limiting groove 15 at both ends, and a limiting hole 16 is provided at the right end of the limiting groove 15. The left side of the support seat 8 is symmetrically provided with a limiting plate 17 at the front and rear ends. The limiting plate 17 is L-shaped, and the limiting block 18 is fixedly installed at the right end of the limiting plate 17 corresponding to the limiting hole 16. The ends of the limiting plates 17 away from each other are fixedly installed with a connecting rod 2 19, and the ends of the connecting rod 2 19 away from each other are penetrated and slidably installed with an inclined panel 20, which is slidably installed on the left end of the support seat 8. The outer side of the connecting rod 2 19 is sleeved with a spring 3 21, and the two ends of the spring 3 21 are respectively fixedly connected to the limiting plate 17 and the inclined panel 20, and the inclined panels 20 are fixedly installed between them. A spring four 22 is installed, and a push rod 23 is fixedly installed on the front and rear sides of the upper end of the connecting plate 12 corresponding to the inclined plate 20. Through holes 24 are opened on the front and rear ends of the connecting hard tube 6 corresponding to the limit holes 16. A nozzle tube 25 is fixedly installed on the front and rear symmetrical corresponding through holes 24 at the right end of the support seat 8. The lower end of the nozzle tube 25 is connected with a hollow rubber bag 26, and the left end of the hollow rubber bag 26 is fixedly connected to the support seat 8. A pressed plate 27 is fixedly installed on the right end of the hollow rubber bag 26, and a spring five 28 is fixedly installed on the upper and lower sides of the left end of the pressed plate 27. The left end of the spring five 28 is fixedly connected to the support seat 8, and a main pressing plate 29 is fixedly installed on the front and rear ends of the movable frame 7 corresponding to the pressed plate 27;

[0042] During operation, when the connecting hard pipe 6 is pulled during use, the movable frame 7 will be driven to slide to the left on the support seat 8 synchronously, compressing the spring 1 9, and the set connecting hose 5 will gradually become straightened from the original loose state, providing a buffer space for the connecting hard pipe 6 to slide to the left, which is convenient for reducing the pulling force when the connecting hard pipe 6 is pulled, and avoids the traditional oil outlet pipe 4 being directly pulled with great force, resulting in the loosening of the connection between the oil outlet pipe 4 and the electric hydraulic pump body 1 after long-term use, thereby ensuring the connection stability between the electric hydraulic pump body 1 and the oil outlet pipe 4. When the pulling force is too large, the connecting hard pipe 6 will continue to drive the movable frame 7 to move to the left, and under the action of the connecting rod 14, the connecting plate 12 is pushed to slide upward on the support seat 8, and the connecting plate 12 drives the telescopic rod As the buffer plate 10 and the spring 13 continue to slide upward, the buffer plate 10 will fit on the lower end of the connecting hard tube 6, and the telescopic rod 11 and the spring 13 will be gradually contracted and compressed, causing the buffer plate 10 to fit tightly on the lower end of the connecting hard tube 6. As the connecting hard tube 6 continues to slide to the left, the convex strip 101 will be driven to slide to the left synchronously, and the convex strip 101 will contact and squeeze with the blocking strip on the buffer plate 10, which is beneficial to blocking the connecting hard tube 6 with a large pulling force, reducing the pulling force of the connecting hard tube 6, so that it can gradually stop, avoiding subsequent pulling and loosening damage to the connecting hose 5 and the oil outlet pipe 4, and ensuring the connection stability between the electric hydraulic pump body 1 and the oil outlet pipe 4. If the pulling force of the connecting hard tube 6 is large, the convex strip 1 01 Breaking through the obstruction of the buffer plate 10 will cause the connecting hard pipe 6 to continue to move to the left. At this time, the connecting plate 12 will continue to drive the push rod 23 to slide upward. The push rod 23 will squeeze the inclined plate 20, so that the inclined plates 20 on both sides slide in a direction close to each other on the support seat 8, compressing the spring four 22. The inclined plates 20 on both sides will also drive the connecting rod two 19 and the limit plate 17 to synchronously approach the connecting hard pipe 6 until the end of the limit plate 17 that is close to each other contacts the surface of the connecting hard pipe 6, and the limit plate 17 stops moving. As the inclined plates 20 continue to approach each other, the inclined plates 20 will slide on the connecting rod two 19, compressing the spring three 21. When the limit slot 15 moves to the side where the limit plates 17 are close to each other, the spring three 21 will release the pressure, thereby pushing the limit plates on both sides. The plate 17 is stuck in the limit groove 15 and slides in the limit groove 15 until the limit block 18 on the limit plate 17 is stuck in the limit hole 16. The limit plate 17 will limit the connecting hard pipe 6 and prevent it from continuing to slide to the left, thereby avoiding the subsequent connecting hose 5 and the oil outlet pipe 4 from being loosened and damaged due to excessive pulling force. This is beneficial to ensuring the connection stability between the electric hydraulic pump body 1 and the oil outlet pipe 4. The set limit block 18 is stuck in the limit hole 16 to ensure that the limit plate 17 can be stably stuck in the limit groove 15, avoiding the limit plate 17 from falling out of the limit groove 15. When the movable frame 7 moves to the left, it will also drive the main pressure plate 29 to move to the left synchronously. The main pressure plate 29 squeezes the pressed plate 27.The pressed plate 27 squeezes the spring 5 28 and the hollow rubber bag 26, so that the gas in the hollow rubber bag 26 is ejected from the nozzle tube 25, and the gas is ejected through the through hole 24. Since the through hole 24 and the limiting hole 16 are interconnected, it is beneficial to clear the blockage in the limiting hole 16, thereby ensuring that the subsequent limiting block 18 can be smoothly connected to the limiting hole 16, and ensuring that the limiting plate 17 can smoothly cooperate with the limiting groove 15 to limit the connecting hard pipe 6.

[0043] As an embodiment of the present invention, an anti-entanglement mechanism is further provided for preventing the connecting hose 5 from being entangled when being pulled, and the anti-entanglement mechanism includes a collar 30 sleeved on the outer side of the connecting hose 5, and a telescopic rod 2 31 is fixedly mounted on the lower end of the collar 30, and the lower end of the telescopic rod 2 31 is fixedly mounted on the movable frame 7, and there are no less than three collars 30 and telescopic rods 2 31;

[0044] During operation, the telescopic rod 2 31 and the collar 30 can adaptively extend and retract the connecting hose 5 in a relaxed or stretched state, thereby preventing the excessively long connecting hose 5 from being entangled in a relaxed state and being damaged once it is stretched by a pulling force.

[0045] Working principle:

[0046] When the present invention is in use, when the connecting hard pipe 6 is pulled during use, it will drive the movable frame 7 to slide leftward on the support seat 8 synchronously, compressing the spring 1 9, and the arranged connecting hose 5 gradually becomes straight from the original loose state, providing a buffer space for the connecting hard pipe 6 to slide leftward, which is convenient for reducing the pulling force when the connecting hard pipe 6 is pulled, and avoids the traditional oil outlet pipe 4 being directly pulled with great force, resulting in the loosening of the connection between the oil outlet pipe 4 and the electric hydraulic pump body 1 due to long-term use, thereby ensuring the connection stability between the electric hydraulic pump body 1 and the oil outlet pipe 4. When the pulling force is too large, the connecting hard pipe 6 will continue to drive the movable frame 7 to move leftward, and under the action of the connecting rod 14, the connecting plate 12 is pushed to slide upward on the support seat 8, and the connecting plate 12 drives the extending The retractable rod 11, the buffer plate 10 and the spring 2 13 continue to slide upward, and the buffer plate 10 will fit on the lower end of the connecting hard tube 6. The telescopic rod 11 and the spring 2 13 will be gradually contracted and compressed, causing the buffer plate 10 to fit tightly on the lower end of the connecting hard tube 6. As the connecting hard tube 6 continues to slide to the left, the convex strip 101 will be driven to slide to the left synchronously, and the convex strip 101 will contact and squeeze with the blocking strip on the buffer plate 10, which is beneficial to blocking the connecting hard tube 6 with a large pulling force, reducing the pulling force of the connecting hard tube 6, so that it can gradually stop, avoiding subsequent pulling and loosening damage to the connecting hose 5 and the oil outlet pipe 4, ensuring the connection stability between the electric hydraulic pump body 1 and the oil outlet pipe 4. If the pulling force of the connecting hard tube 6 is very large, the convex strip 101 will be pressed against the blocking strip on the buffer plate 10. 101 breaks through the obstruction of the buffer plate 10, which will cause the connecting hard pipe 6 to continue to move to the left. At this time, the connecting plate 12 will continue to drive the push rod 23 to slide upward, and the push rod 23 will squeeze the inclined plate 20, so that the inclined plates 20 on both sides slide in a direction close to each other on the support seat 8, compressing the spring four 22. The inclined plates 20 on both sides will also drive the connecting rod two 19 and the limit plate 17 to synchronously approach the connecting hard pipe 6 until the end of the limit plate 17 that is close to each other contacts the surface of the connecting hard pipe 6, and the limit plate 17 stops moving. As the inclined plates 20 continue to approach each other, the inclined plates 20 will slide on the connecting rod two 19, compressing the spring three 21. When the limit groove 15 moves to the side where the limit plates 17 are close to each other, the spring three 21 will release the pressure, thereby pushing the limit plates on both sides. The positioning plate 17 is stuck in the limiting groove 15 and slides in the limiting groove 15 until the limiting block 18 on the limiting plate 17 is engaged with the limiting hole 16. The limiting plate 17 will limit the connecting hard pipe 6 and prevent it from continuing to slide to the left, thereby avoiding the subsequent connecting hose 5 and the oil outlet pipe 4 from being loosened and damaged due to excessive pulling force, which is beneficial to ensuring the connection stability between the electric hydraulic pump body 1 and the oil outlet pipe 4. The setting limiting block 18 is engaged in the limiting hole 16 to ensure that the limiting plate 17 can be stably stuck in the limiting groove 15, avoiding the limiting plate 17 from falling out of the limiting groove 15. When the movable frame 7 moves to the left, it will also drive the main pressure plate 29 to move to the left synchronously. The main pressure plate 29 squeezes the pressed plate 27.The pressed plate 27 squeezes the spring 5 28 and the hollow rubber bag 26, so that the gas in the hollow rubber bag 26 is ejected from the nozzle tube 25, and the gas is ejected through the through hole 24. Since the through hole 24 and the limiting hole 16 are interconnected, it is beneficial to clear the blockage in the limiting hole 16, thereby ensuring that the subsequent limiting block 18 can be smoothly clamped in the limiting hole 16, ensuring that the limiting plate 17 can smoothly cooperate with the limiting groove 15 to limit the connection hard pipe 6. The set telescopic rod 2 31 and the ring 30 can adaptively extend and retract the connection hose 5 in the relaxed or straightened state, avoiding the excessively long connection hose 5 from being entangled in a loose state. Once it is straightened by the pulling force, it will be entangled and damaged.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A firmly connected electric hydraulic pump, comprising an electric hydraulic pump body (1), characterized in that: The right end of the electric hydraulic pump body (1) is provided with a motor (2), the front side of the electric hydraulic pump body (1) is provided with a valve (3), and the upper end of the electric hydraulic pump body (1) is provided with an oil outlet pipe (4); A protection mechanism for protecting the oil outlet pipe (4) is also provided, the protection mechanism comprising a connecting hose (5) fixedly mounted on the left end of the oil outlet pipe (4), a connecting hard pipe (6) fixedly mounted on the left end of the connecting hose (5), a movable frame (7) fixedly mounted on the lower end of the connecting hard pipe (6), a support seat (8) slidably mounted on the lower end of the movable frame (7), the right end of the support seat (8) fixedly mounted on the electric hydraulic pump body (1), a spring (9) fixedly mounted on the lower side of the left end of the movable frame (7), and the left end of the spring (9) fixedly mounted on the support seat (8); An anti-entanglement mechanism is also provided for preventing the connecting hose (5) from being entangled when being pulled, the anti-entanglement mechanism comprising a collar (30) sleeved on the outside of the connecting hose (5), a second telescopic rod (31) being fixedly mounted on the lower end of the collar (30), the lower end of the second telescopic rod (31) being fixedly mounted on the movable frame (7), and the collar (30) and the second telescopic rod (31) being at least three.

2. The electric hydraulic pump with a stable connection according to claim 1, characterized in that: The left side of the connecting rigid tube (6) is movably mounted on the support seat (8), a buffer plate (10) is provided on the inner upper side of the support seat (8) corresponding to the lower side of the connecting rigid tube (6), and no less than three convex strips (101) are fixedly mounted on the right side of the buffer plate (10) corresponding to the lower end of the connecting rigid tube (6).

3. The electric hydraulic pump with a stable connection according to claim 2, characterized in that: A telescopic rod (11) is fixedly mounted on the lower end of the buffer plate (10), a connecting plate (12) is fixedly mounted on the lower end of the telescopic rod (11), and the connecting plate (12) is slidably mounted on the support seat (8).

4. The electric hydraulic pump with a stable connection according to claim 3, characterized in that: A spring 2 (13) is sleeved on the outer side of the telescopic rod 1 (11), and the upper and lower ends of the spring 2 (13) are respectively fixedly connected to the buffer plate (10) and the connecting plate (12), and the right end of the connecting plate (12) is hinged with a connecting rod 1 (14), and the right end of the connecting rod 1 (14) is hinged to the movable frame (7).

5. The electric hydraulic pump with a stable connection according to claim 1, characterized in that: The connecting hard pipe (6) is provided with limiting grooves (15) at both the front and rear ends, and a limiting hole (16) is provided at the right end of the limiting groove (15).

6. The electric hydraulic pump with a stable connection according to claim 1, characterized in that: The left side of the support seat (8) is symmetrically provided with a limit plate (17) in the front and rear directions. The limit plate (17) is L-shaped, and a limit block (18) is fixedly installed at the right end of the limit plate (17) corresponding to the limit hole (16).

7. The electric hydraulic pump with a stable connection according to claim 6, characterized in that: The ends of the limit plates (17) that are away from each other are fixedly mounted with connecting rod 2 (19), and the ends of the connecting rod 2 (19) that are away from each other are penetrated by an inclined panel (20) that is slidably mounted, and the inclined panel (20) is slidably mounted on the left end of the support seat (8).

8. The electric hydraulic pump with a stable connection according to claim 7, characterized in that: A spring three (21) is sleeved on the outer side of the second connecting rod (19), and the two ends of the spring three (21) are respectively fixedly connected to the limit plate (17) and the inclined plate (20), and a spring four (22) is fixedly installed between the inclined plates (20), and a push rod (23) is fixedly installed on both sides of the upper end of the connecting plate (12) corresponding to the inclined plates (20).

9. The electric hydraulic pump with a stable connection according to claim 1, characterized in that: Through holes (24) are provided on the front and rear ends of the connecting rigid tube (6) corresponding to the limiting holes (16); nozzle tubes (25) are fixedly mounted on the front and rear right ends of the supporting seat (8) symmetrically corresponding to the through holes (24); the lower ends of the nozzle tubes (25) are connected to hollow rubber bags (26); and the left ends of the hollow rubber bags (26) are fixedly connected to the supporting seat (8).

10. The electric hydraulic pump with a stable connection according to claim 9, characterized in that: A pressed plate (27) is fixedly mounted on the right end of the hollow rubber bag (26), springs (28) are fixedly mounted on both upper and lower sides of the left end of the pressed plate (27), the left ends of the springs (28) are fixedly connected to the support seat (8), and main pressing plates (29) are fixedly mounted on the front and rear ends of the movable frame (7) corresponding to the pressed plate (27).

Images