A hydraulic quick-change joint for quickly replacing telescopic arm forklift tools

Abstract

The utility model discloses a hydraulic quick-change joint for quickly replacing telescopic arm forklift tools, comprising a shaft hanging tube with shafts at both ends and a joint cylinder with piston rods at both ends, the shaft hanging tube and the joint cylinder are parallel to each other and fixedly connected by a plurality of baffles, the cavity of the joint cylinder is connected to an external hydraulic control end through an electromagnetic cartridge valve oil circuit; a plurality of connecting plates are fixed on the outer wall of the joint cylinder, and one end of the connecting plate is rotatably connected to the front end of the telescopic arm tube of the forklift, the telescopic arm tube is also provided with a telescopic cylinder, the piston rod of the telescopic cylinder is hinged at the lower end part of the connecting plate for controlling the rotation of the hydraulic quick-change joint as a whole along the joint connecting pin, the upper end of the connecting plate is fixedly connected to the shaft hanging tube, the hydraulic quick-change joint is used to replace the mechanical joint to connect tools, to connect different tools, and when replacing different tools, the piston rod is extended and retracted for disassembly, and hammering is not required, thereby extending the service life of the tool and having a high safety factor.

Description

Technical Field

[0001] The utility model relates to the field of telescopic arm forklifts, in particular to a hydraulic quick-change joint for quickly replacing telescopic arm forklift tools. Background Art

[0002] In construction machinery, telescopic forklifts are used as a multifunctional lifting and handling equipment with an increasingly wide range of applications. The wider the application range of telescopic forklifts, the more frequently different tools (forks, buckets, hoppers, load platforms, crushing shears, etc.) need to be replaced to meet different usage functions. At present, telescopic forklifts use mechanical joints to connect tools. Different tools are connected by manual operation. The operation process is relatively cumbersome, and it is necessary to hammer the connecting pins to wear and remove the pins, and it requires multiple people to work together at the same time to complete (hole alignment is more troublesome), which is time-consuming, labor-intensive, and labor-intensive, thereby increasing labor costs; when replacing different tools, the pins are disassembled by hammering, and the hammering process causes greater damage to the pins, reducing the service life of the pins, and there are safety risks in the hammering process, thereby increasing the cost of the machine and reducing the safety factor; the replaced tools need to be hoisted to the designated area for a second time, and cannot be in place at one time, increasing labor costs. Utility Model Content

[0003] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a hydraulic quick-change joint for quickly replacing telescopic arm forklift tools, which uses a hydraulic quick-change joint to replace a mechanical joint to connect tools, to connect different tools (forks, buckets, hoppers, load platforms, crushing shears, etc.). Its operation process is simple, time-saving, low labor intensity, and reduced labor costs; when replacing different tools, the piston rod is extended and disassembled, and hammering is not required, which prolongs the service life of the tools and has a high safety factor; the replaced tools are placed in the designated area in turn, reducing labor costs.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a hydraulic quick-change joint for quickly replacing telescopic arm forklift tools, comprising a hanging shaft tube with hanging shafts at both ends and a joint cylinder tube with piston rods at both ends, the hanging shaft tube and the joint cylinder tube are parallel to each other and fixedly connected together by a plurality of baffles, the cavity of the joint cylinder tube is connected to an external hydraulic control end through an electromagnetic cartridge valve oil circuit; a plurality of connecting plates are fixed on the outer wall of the joint cylinder tube and one end of the connecting plate is rotatably connected to the front end of the telescopic arm tube of the forklift, the telescopic arm tube is also provided with a telescopic cylinder, the piston rod of the telescopic cylinder is hinged to the lower end part of the connecting plate for controlling the overall rotation of the hydraulic quick-change joint along the joint connecting pin, and the upper end of the connecting plate is fixedly connected to the hanging shaft tube.

[0006] Preferably, the connecting plate is provided with three ends, the lower end is hinged to the piston rod of the telescopic cylinder through the telescopic cylinder connecting pin; the middle end is rotatably connected to the front end of the telescopic arm tube through the joint connecting pin.

[0007] Preferably, a limit sensor is provided on the outer wall of the joint cylinder, and the limit sensor is used to determine whether the piston rod is aligned with the mounting hole of the machine and to give a signal to the external hydraulic control end indicating whether the piston rod is extended.

[0008] Preferably, a pressure sensor is provided at the end of the piston rod, and the pressure sensor is used to detect a received pressure signal to determine whether to close the piston rod and continue to extend it.

[0009] The beneficial effects of the utility model are as follows: a telescopic arm forklift adopts the device to connect different machines (forks, buckets, hoppers, load platforms, crushing shears, etc.); the electromagnetic cartridge valve is used to control the extension and retraction of the piston rod, the operation process is simple, and one person can complete it independently, and the replacement can be completed in just a few seconds, which saves time, reduces labor intensity, and reduces labor costs; when replacing different machines, the disassembly is carried out by controlling the extension and retraction of the piston rod, and no hammering is required, which prolongs the service life of the machine and has a high safety factor; the replaced machines are placed in a designated area at one time, reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A schematic diagram of the structure of a hydraulic quick-change joint for quickly replacing telescopic arm forklift tools provided by an embodiment of the utility model;

[0012] Figure 2 A front view of a hydraulic quick-change joint for quickly changing telescopic arm forklift tools provided by an embodiment of the utility model;

[0013] Figure 3 A right side view of a hydraulic quick-change joint for quickly changing telescopic arm forklift tools provided by an embodiment of the utility model;

[0014] Figure 4 A schematic diagram of the connection between a hydraulic quick-change joint and a telescopic arm cylinder for quickly replacing telescopic arm forklift tools provided in an embodiment of the utility model.

[0015] Description of reference numerals:

[0016] 9. Piston rod; 10. Connecting plate; 12. Limiter sensor; 13. Connector cylinder; 14. Hydraulic quick-change connector; 15. Telescopic cylinder connecting pin; 16. Solenoid cartridge valve; 17. Hanging shaft tube; 18. Hanging shaft; 19. Baffle; 23. Oil pipe; 24. Solenoid valve; 26. Telescopic cylinder; 30. Telescopic arm tube; 31. High-pressure oil inlet pipe. 33. High-pressure oil outlet pipe; 41. Connector connecting pin. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figures 1 to 4 As shown, a hydraulic quick-change joint for quickly replacing telescopic forklift tools comprises a hanging shaft tube 17 with hanging shafts 18 at both ends and a joint cylinder 13 with piston rods 9 at both ends. The hanging shaft tube 17 and the joint cylinder 13 are parallel to each other and fixedly connected together through a plurality of baffles 19. The cavity of the joint cylinder 13 is connected to an external hydraulic control end through an electromagnetic cartridge valve 16 oil circuit; the electromagnetic cartridge valve 16 enables the hydraulic quick-change joint to maintain its original position even when the power is off.

[0019] A plurality of connecting plates 10 are fixed on the outer wall of the joint cylinder 13 and one end of the connecting plate 10 is rotatably connected to the front end of the telescopic arm cylinder 30 of the forklift. The telescopic arm cylinder 30 is also provided with a telescopic cylinder 26. The piston rod of the telescopic cylinder 26 is hinged to the lower end of the connecting plate 10 to control the hydraulic quick-change joint 14 to rotate along the joint connecting pin 41 as a whole. The upper end of the connecting plate 10 is fixedly connected to the hanging shaft tube 17.

[0020] The connecting plate 10 is hinged to the piston rod of the telescopic cylinder 26 through the telescopic cylinder connecting pin 15; the connecting plate 10 is rotatably connected to the front end of the telescopic arm tube 30 through the joint connecting pin 41.

[0021] A limit sensor 12 is disposed on the outer wall of the joint cylinder 13 , and the limit sensor 12 is used to determine whether the piston rod 9 is aligned with the mounting hole of the machine and to give a signal to the external hydraulic control end whether the piston rod 9 is extended.

[0022] A pressure sensor is provided at the end of the piston rod 9, and the pressure sensor is used to detect the received pressure signal to determine whether to close the piston rod 9 and continue to extend.

[0023] During operation, the hanging shaft 18 is installed in the hanging shaft tube 17, and the machine is connected through the hanging shaft 18; the power source is provided to the hydraulic quick-change joint 14 through the main engine branch hydraulic control system; the solenoid valve 24 on the solenoid cartridge valve 16 is controlled to be energized and work, and the valve body is opened. At this time, the hydraulic oil passes through the high-pressure oil inlet pipe 31 and the oil pipe 23 to make the rodless cavity of the joint cylinder 13 pass oil, and the hydraulic oil is converted into kinetic energy to push the piston rod 9 to extend so as to connect with the corresponding hole on the machine; the pressure sensor is used to detect the received pressure signal to determine whether to close the piston rod and continue to extend;

[0024] When disassembling the machine, the solenoid valve 24 on the solenoid cartridge valve 16 is energized to open the valve body. At this time, the hydraulic oil passes through the high-pressure oil outlet pipe 33 to allow oil to flow through the rod chamber of the joint cylinder 13. The hydraulic oil is converted into kinetic energy to push the piston rod 9 to retract and thus separate from the machine; the connection with the machine is achieved safely and efficiently through the telescopic movement of the piston rod 9.

[0025] Both ends of the telescopic cylinder connecting pin 15 and the joint connecting pin 41 are provided with stop rings to prevent them from slipping out. The telescopic cylinder connecting pin 15 and the joint connecting pin 41 are also provided with locking pins adapted to the connecting plate 10. The piston rod of the telescopic cylinder 26 controls the rotation position of the hydraulic quick-change joint 14; the height of the hydraulic quick-change joint 14 is controlled by the arm connected to it; the connection with the machine tool is achieved safely and efficiently through the telescopic movement of the piston rod 9.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A hydraulic quick-change joint for quickly replacing telescopic arm forklift tools, characterized in that: The invention comprises a shaft-hanging tube (17) with shafts (18) at both ends and a joint cylinder (13) with piston rods (9) at both ends. The shaft-hanging tube (17) and the joint cylinder (13) are parallel to each other and fixedly connected together via a plurality of baffles (19). The cavity oil circuit of the joint cylinder (13) is connected to an external hydraulic control end. A plurality of connecting plates (10) are fixed on the outer wall of the joint cylinder (13), and one end of the connecting plate (10) is rotatably connected to the front end of a telescopic arm tube (30) of a forklift. A telescopic cylinder (26) is also provided on the telescopic arm tube (30). The piston rod of the telescopic cylinder (26) is hinged to the lower end of the connecting plate (10) for controlling the overall rotation of the hydraulic quick-change joint (14) along the joint connecting pin (41). The upper end of the connecting plate (10) is fixedly connected to the shaft-hanging tube (17).

2. A hydraulic quick-change joint for quickly changing telescopic forklift tools as claimed in claim 1, characterized in that: The connecting plate (10) is provided with three ends, the lower end is hingedly connected to the piston rod of the telescopic cylinder (26) through the telescopic cylinder connecting pin (15); the middle end is rotatably connected to the front end of the telescopic arm tube (30) through the joint connecting pin (41).

3. A hydraulic quick-change joint for quickly changing telescopic forklift tools as claimed in claim 1, characterized in that: A limit sensor (12) is provided on the outer wall of the joint cylinder (13), and the limit sensor (12) is used to determine whether the piston rod (9) is aligned with the mounting hole of the machine tool and to provide a signal to the external hydraulic control end indicating whether the piston rod (9) is extended.

4. A hydraulic quick-change joint for quickly changing telescopic forklift tools as claimed in claim 1, characterized in that: A pressure sensor is provided at the end of the piston rod (9), and the pressure sensor is used to detect a received pressure signal to determine whether to close the piston rod (9) and continue to extend it.

5. A hydraulic quick-change joint for quickly changing telescopic forklift tools as claimed in claim 1, characterized in that: The cavity of the joint cylinder (13) is connected to an external hydraulic control end via an oil circuit of an electromagnetic cartridge valve (16).

Images