Auxiliary stress application tool for hydraulic pump handle

Abstract

The utility model discloses an auxiliary stress application tool for a hydraulic pump handle and belongs to the technical field of hydraulic pump detection equipment. The utility model aims to design an auxiliary stress application tool for a handle of a hydraulic pump, which can be used for checking and testing the manual handle of the hydraulic pump for many times, aiming at the shape and the working principle of the manual adjusting handle of the hydraulic pump. The device comprises a linear motion cylinder, a servo motor, a speed reducer, a snakelike coupler, a torque sensor and a sleeve, the linear motion cylinder is installed on a vertical plate of an L-shaped workbench, a stress application mechanism is installed on a stress application mechanism supporting plate installed on a linear motion mechanism, and a screwing stress application device is installed at the front end of the snakelike coupler. The hand-operated hydraulic pump handle performance detection tool is a tool specially used for carrying out performance detection on a hydraulic pump handle in a hand-operated hydraulic pump or a manual-electric integrated pump, can simulate a hand screwing mode to screw the handle, can accurately adjust oil pressure, and assists other detection equipment in detecting the hand-operated hydraulic pump or the manual-electric integrated pump.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic pump testing equipment. Background Technology

[0002] Hydraulic pumps are categorized into manual hydraulic pumps, electric hydraulic pumps, and hand-electric integrated pumps. As a simple and convenient hydraulic power source, they are widely used in shipbuilding, coal mining machinery, petrochemicals, metallurgy, power generation, and heavy machinery, among other fields. Their advantages, such as small size, light weight, portability, and high safety, have made them widely accepted by users. Their function is to convert the mechanical energy of a power source (such as an electric motor or internal combustion engine) into the pressure energy of a liquid. For safety reasons, manual hydraulic pumps or hand-electric integrated pumps often include a manual adjustment handle. Figure 5 After the hydraulic pump is manufactured, the adjustable handle (P) needs to be tested for performance. Existing testing equipment will have a relatively large error when the number of tests is large. Summary of the Invention

[0003] The purpose of this invention is to design an auxiliary force-applying fixture for the hydraulic pump handle, which can be used to perform multiple inspection experiments on the manual adjustment handle of the hydraulic pump, based on the shape and working principle of the hydraulic pump handle.

[0004] This utility model includes a linear motion cylinder, a servo motor, a reducer, a serpentine coupling, a torque sensor, and a sleeve. The linear motion cylinder is mounted on the vertical plate of the L-shaped worktable. A force-applying mechanism is mounted on the support plate of the force-applying mechanism on the linear motion mechanism. A screwing force-applying device is mounted at the front end of the serpentine coupling.

[0005] Linear motion mechanism: A linear slide rail is installed on the horizontal plate of the L-shaped worktable, and a linear sleeve is installed on the linear slide rail; a floating joint is installed at the end of the piston rod of the linear motion cylinder after passing through the vertical plate of the L-shaped worktable, and a linear motion support block is installed at the front end of the floating joint. The linear motion support block and the linear sleeve are installed at the bottom of the force-applying mechanism platform.

[0006] Force-applying mechanism: A rear upright plate is installed on the back side of the force-applying mechanism platform. The motor shaft of the servo motor passes through the force-applying mechanism reducer, passes through the rear upright plate, and is connected to the torque sensor and the serpentine coupling. A screw-applying device is installed at the front end of the serpentine coupling. The force-applying device bushing in the screw-applying device is installed on the front upright plate through a bearing.

[0007] Tightening force-applying device: The front upright plate is mounted on the force-applying mechanism platform; the force-applying rod is inserted into the inside of the force-applying device bushing and is axially fixed by the cooperation of the force-applying rod groove, the force-applying rod retaining pin, and the inner groove of the bushing; the threaded hole of the force-applying rod at the bottom of the force-applying rod is tightened onto the force-applying retaining pin by the force-applying rod nut; the two ends of the force-applying retaining pin are correspondingly placed in the bushing groove at the bottom of the bushing of the force-applying device; the part of the force-applying rod protruding from the bushing of the force-applying device is fitted with a force-applying spring; the rear end of the force-applying spring abuts against the surface of the bushing of the force-applying device, and the front end of the force-applying spring abuts against the force-applying spring on the force-applying rod and is secured; the top of the force-applying rod is a sleeve mounting head; the mounting slot at the rear end of the sleeve mates with the sleeve mounting head and is fixed with a pin by the corresponding sleeve mounting head pin hole and sleeve pin hole; the rear end of the force-applying device bushing is inserted into the inner shaft of the serpentine coupling and is axially fixed by the cooperation of the bushing groove, the bushing retaining pin, and the inner groove of the coupling.

[0008] This utility model is a tooling specifically designed for performance testing of the hydraulic pump handle in manual hydraulic pumps or hand-electric integrated pumps. It can simulate the turning of a human hand to precisely adjust the oil pressure and assist other testing equipment in testing manual hydraulic pumps or hand-electric integrated pumps. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0010] Figure 2 This is an exploded view of one side of the screwing force-applying device of this utility model;

[0011] Figure 3 This is an exploded view of the other side of the screwing force-applying device of this utility model;

[0012] Figure 4 This is a top view of the linear motion mechanism of this utility model;

[0013] Figure 5 This is a schematic diagram of the handle of a manual hydraulic pump or a manual-electric integrated pump. Detailed Implementation

[0014] This utility model includes a servo motor 1, a reducer 2, a serpentine coupling 3, and a torque sensor 4. These devices are all existing, and their functions and connections are also adopted by this utility model. Therefore, this step will not be described in detail. The main feature of this utility model is that a tightening force-applying device 6 is connected to the end of the serpentine coupling 3. The linear motion cylinder 8 is an existing cylinder, which only needs to ensure that the driving mechanism performs linear motion. Its air source is connected to an air tank. The sleeve 610 is similar to an Allen wrench, mainly to match the shape of the hydraulic pump handle P on the hydraulic pump, and can be turned by tightening it.

[0015] The linear motion cylinder 8 is mounted on the vertical plate of the L-shaped worktable 9. The force-applying mechanism is mounted on the force-applying mechanism support plate 5 on the linear motion mechanism 7. The screwing force-applying device 6 is mounted at the front end of the serpentine coupling 3.

[0016] See Figure 1 The L-shaped worktable 9, viewed from the side, resembles an L-shape, with a vertical plate and a horizontal support plate. The cylinder body of the linear motion cylinder 8 is fixed to the outside of the vertical plate, while the linear motion mechanism 7 is mounted on the horizontal support plate. The piston rod of the linear motion cylinder 8 passes through the vertical plate and connects to the linear motion mechanism 7. The existing mechanism connection described in paragraph

[0007] and the screwing force-applying device 6 of the present invention (these two parts constitute the force-applying mechanism) are both mounted on the force-applying mechanism support plate 5 driven by the linear motion mechanism 7.

[0017] Linear motion mechanism 7: A linear slide rail 701 is installed on the horizontal plate of the L-shaped worktable 9, and a linear sleeve 702 is matched and installed on the linear slide rail 701; a floating joint 704 is installed at the end of the piston rod of the linear motion cylinder 8 after passing through the vertical plate of the L-shaped worktable 9, and a linear motion support block 703 is installed at the front end of the floating joint 704. The linear motion support block 704 and the linear sleeve 702 are installed at the bottom of the force-applying mechanism platform 5.

[0018] Linear motion mechanism 7 (see) Figure 4 The upper surfaces of the linear slide sleeve 702 and the linear motion support block 703 are on the same plane. Thus, after the force-applying mechanism support plate 5 is installed on the linear slide sleeve 702 and the linear motion support block 703, it is on a flat plane. The linear motion support block 703 is a power mechanism. The piston rod of the linear motion cylinder 8 supports the linear motion support block 703 to move back and forth, thereby supporting the force-applying mechanism support plate 5 to move back and forth. At this time, the linear slide sleeve 702 also moves back and forth. However, due to the linear limitation of the linear slide rail 701, the force-applying mechanism support plate 5 can only make back and forth linear movements.

[0019] Force-applying mechanism: A rear upright plate 10 is installed on the rear side of the force-applying mechanism platform 5. The motor shaft of the servo motor 1 passes through the force-applying mechanism reducer 2, and then passes through the rear upright plate 10 to connect with the torque sensor 4 and the serpentine coupling 3. A screwing force-applying device 6 is installed at the front end of the serpentine coupling 3. The force-applying device bushing 604 in the screwing force-applying device 6 is installed on the front upright plate 11 through a bearing.

[0020] Twisting force-applying device 6: The front upright plate 11 is mounted on the force-applying mechanism platform 5; the force-applying rod 613 is inserted into the force-applying device bushing 604 and is axially fixed by the cooperation of the force-applying rod groove 606, the force-applying rod locking pin 605 and the bushing inner groove 619; the force-applying rod threaded hole 614 at the bottom of the force-applying rod 613 is tightened onto the force-applying locking pin 602 by the force-applying rod nut 601; the two ends of the force-applying locking pin 602 are correspondingly placed in the bushing sliding groove 603 at the bottom of the force-applying device bushing 604; the part of the force-applying rod 613 protruding from the force-applying device bushing 604 is fitted with a force-applying spring 615. The rear end of the force-adding device bushing 604 rests on the surface of the force-adding device bushing 604. The front end of the force-adding spring 615 rests on the force-adding spring clip 612 on the force-adding rod 613. The top end of the force-adding rod 613 is a sleeve mounting head 608. The mounting slot 611 at the rear end of the sleeve 609 is connected to the sleeve mounting head 608 and is fixed with a pin through the corresponding sleeve mounting head pin hole 607 and sleeve pin hole 609. The rear end of the force-adding device bushing 604 is inserted into the inner shaft 620 of the serpentine coupling 3 and is axially fixed through the cooperation of the bushing groove 616, the bushing clip 617 and the inner groove 621 of the coupling.

[0021] See Figure 2 and Figure 3 The power of the serpentine coupling 3 is transmitted from the servo motor 1, which selects the turning force-applying device 6, thereby turning the hydraulic pump handle P through the sleeve 610 at the front end. Half of the bushing retainer 617 is placed in the notch (shoulder groove 616) on the wall of the force-applying device bushing 604, and the other half is placed in the notch (coupling inner groove 621) on the inner wall of the inner shaft 620 of the coupling. In this way, the force-applying device bushing 604 and the inner shaft 620 of the coupling are axially fixed. That is to say, when the inner shaft 620 of the coupling rotates, the force-applying device bushing 604 will also rotate.

[0022] The tail end of the force-applying device bushing 604 is inserted inside the inner shaft 620 of the coupling. Its radial fixation is achieved by the positional restriction between the rear vertical plate 10 and the front vertical plate 11. The force-applying device bushing 604 is connected to the front vertical plate 11 through a bearing. The tail end of the serpentine coupling 3 (this utility model uses two serpentine couplings 3, but here we are referring to the one connected to the reducer 2) is connected to the rear vertical plate 10 through a bearing. Therefore, the force-applying device bushing 604 and the serpentine coupling 3 can only rotate relative to the rear vertical plate 10 and the front vertical plate 11, and cannot move axially.

[0023] The force-adding rod 613 is a connecting component, an intermediate part connecting the force-adding device bushing 604 and the sleeve 610. The tail end of the force-adding rod 613 ( Figure 3 or Figure 4The left end of the extension rod 602 is inserted into the inner cavity 618 of the extension device bushing 604. To prevent it from being pulled out radially, the extension rod nut 601, the extension pin 602, and the bushing groove 603 are required to work together. The bushing groove 603 is a notch on the side wall of the extension device bushing 604. To accommodate the two ends of the extension pin 602, two notches are made, as shown in the figure. This notch can accommodate the extension pin 602, placing both ends of it inside. Finally, the extension pin 602 is fixed to the tail end of the extension rod 613 by the engagement of the extension rod nut 601 and the extension rod threaded hole 614. To increase axial fixation, the extension rod groove 606, the extension rod pin 605, and the bushing inner groove 619 are added. In this way, the extension device bushing 604 will rotate synchronously with the extension rod 613.

[0024] Since all components of this utility model are rigid parts, it can be basically understood that the sleeve 610 and the hydraulic pump handle P are also in rigid contact. However, sometimes, due to the actual working conditions, the linear motion mechanism 7 will not be able to completely and precisely fit the sleeve 610 and the hydraulic pump handle P. At this time, a compensation tool is required. Therefore, a space is left in the middle of the force-adding rod 613 to fit a spring (force-adding spring 615) that provides compensation margin. This allows the force-adding rod 613 and the force-adding device bushing 604 to form a sliding motion. However, the force-adding rod 613 is limited by the force-adding pin 602. Therefore, a margin is set in the bushing groove 603 to allow the force-adding rod 613 to move within this margin with the force-adding pin 602. In this way, the force-adding rod 613 will have an elastic motion with the sleeve 609, thereby increasing the perfect fit between the sleeve 609 and the hydraulic pump handle P.

Claims

1. A hydraulic pump handle auxiliary force-applying fixture, comprising a linear motion cylinder (8), a servo motor (1), a reducer (2), a serpentine coupling (3), a torque sensor (4), and a sleeve (610), characterized in that: The linear motion cylinder (8) is installed on the upright plate of the L-shaped worktable (9). The force-adding mechanism is installed on the platform (5) of the linear motion mechanism (7). A screwing force-adding device (6) is installed at the front end of the serpentine coupling (3). Linear motion mechanism (7): A linear slide rail (701) is installed on the horizontal plate of the L-shaped worktable (9), and a linear sleeve (702) is installed on the linear slide rail (701); a floating joint (704) is installed at the end of the piston rod of the linear motion cylinder (8) after passing through the vertical plate of the L-shaped worktable (9), and a linear motion support block (703) is installed at the front end of the floating joint (704). The linear motion support block (703) and the linear sleeve (702) are installed at the bottom of the force-applying mechanism platform (5); Force-adding mechanism: A rear upright plate (10) is installed on the rear side of the force-adding mechanism platform (5). The motor shaft of the servo motor (1) passes through the force-adding mechanism reducer (2) and then passes through the rear upright plate (10) to connect with the torque sensor (4) and the serpentine coupling (3). A screwing force-adding device (6) is installed at the front end of the serpentine coupling (3). The force-adding device bushing (604) in the screwing force-adding device (6) is installed on the front upright plate (11) through a bearing. Twisting force-applying device (6): The front upright plate (11) is installed on the force-applying mechanism platform (5); the force-applying rod (613) is inserted into the inside of the force-applying device bushing (604) and is axially fixed by the cooperation of the force-applying rod groove (606), the force-applying rod catch (605) and the bushing inner groove (619). The force-applying rod threaded hole (614) at the bottom of the force-applying rod (613) is tightened onto the force-applying catch (602) by the force-applying rod nut (601). The two ends of the force-applying catch (602) are respectively placed in the bushing slide groove (603) at the bottom of the force-applying device bushing (604). The part of the force-applying rod (613) that protrudes from the force-applying device bushing (604) is fitted with a force-applying spring (615). (615) The rear end rests on the surface of the force-adding device bushing (604), the front end of the force-adding spring (615) rests on the force-adding spring clip (612) on the force-adding rod (613), the top end of the force-adding rod (613) is a sleeve mounting head (608), the mounting slot (611) at the rear end of the sleeve (610) is connected to the sleeve mounting head (608), and is fixed with pins through the corresponding sleeve mounting head pin hole (607) and sleeve pin hole (609); the rear end of the force-adding device bushing (604) is inserted into the inner shaft (620) of the serpentine coupling (3), and is axially fixed through the cooperation of the bushing groove (616), the bushing clip (617) and the inner groove (621) of the coupling.

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