Test bench suitable for hydraulic oil cylinder performance test

Abstract

The invention discloses a test bench suitable for hydraulic oil cylinder performance test, which comprises a U-shaped bench formed by two vertical rods and a bottom rod, the bottom rod, a first motor and a second motor, and also comprises two positioning rods, the output end of the first motor is fixedly connected with a first rotating shaft, and the output end of the second motor is fixedly connected with a second rotating shaft. A reinforcing mechanism is arranged on the side face of the vertical rod, and a holding mechanism is arranged on the positioning rod. According to the test bench, the upper positioning rod and the lower positioning rod are conveniently and controllably adjusted up and down and are automatically fixed, so that the test bench can adapt to load oil cylinders or test oil cylinders with different heights and strokes, the automation degree is high, the test efficiency of the test oil cylinders is improved, and the test efficiency of the test oil cylinders is improved through arrangement and cooperative use of the reinforcing mechanism and the enclasping mechanism. The stability of the test bench is guaranteed, so that the test result is more accurate, the enclasping mechanism is automatically started by starting the reinforcing mechanism, and rapid fastening of the load oil cylinder or the test oil cylinder is realized.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinder testing equipment, in particular to a test bench suitable for hydraulic oil cylinder performance testing. Background Art

[0002] In the hydraulic system, the reliability, durability and other performance of the hydraulic cylinder are crucial to ensure the normal operation of the system.

[0003] At present, the traditional hydraulic cylinder test bench is generally formed by splicing I-shaped steel. The load cylinder is fixed on the top by fastening bolts, and the bottom is used to install the cylinder to be tested. The cylinder to be tested is generally fixed by clamping tooling so that it is always in the same vertical line with the load cylinder.

[0004] However, in the actual test process, faced with the different heights and strokes of the cylinders to be tested, it is necessary to adaptively replace the clamping fixture and adjust the installation height of the load cylinder. At present, it is generally done manually, which is not only cumbersome, but also difficult to ensure that the load cylinder and the cylinder to be tested are always on the same vertical line due to manual fixed installation. Not only is the installation efficiency low, but the test accuracy is also reduced, which makes the applicability, use efficiency and test efficiency of the traditional hydraulic cylinder test bench at a low level, which urgently needs to be improved. For this reason, a test bench suitable for hydraulic cylinder performance testing is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a test bench suitable for hydraulic cylinder performance testing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a test bench suitable for testing the performance of a hydraulic cylinder, comprising a U-shaped bench consisting of two vertical poles and a bottom pole, wherein the bottom pole is arranged between the bottoms of the inner side surfaces of the two vertical poles, the inner side surfaces of the vertical poles are provided with inner slide grooves, the tops of the two vertical poles are respectively provided with a first motor and a second motor, the output end of the first motor extends into the inner slide groove and is fixedly connected to a first rotating shaft, the output end of the second motor extends into the inner slide groove and is fixedly connected to a second rotating shaft, the lower portion of the outer side surface of the first rotating shaft is provided with a thread, and the upper portion of the outer side surface of the second rotating shaft is provided with a thread;

[0007] Two positioning rods are respectively arranged between the first rotating shaft and the second rotating shaft, and the positioning rods include sockets arranged at both ends thereof, the socket on the upper positioning rod is slidably connected to the first rotating shaft and threadedly connected to the second rotating shaft, and the socket on the lower positioning rod is threadedly connected to the first rotating shaft and slidably connected to the second rotating shaft;

[0008] The middle section of the positioning rod is provided with a concave round block, and a through hole is opened at the center of the inner bottom surface of the concave round block;

[0009] A reinforcing mechanism is arranged on the side of the vertical rod close to the positioning rod, and a clamping mechanism is arranged on the positioning rod.

[0010] Preferably: the reinforcement mechanism includes a long rotating notch opened at the corner of the vertical pole near the positioning rod, a fixed shaft is vertically arranged in the long rotating notch, a plurality of rotating wheels are rotatably connected to the fixed shaft, a plurality of magnetic blocks are evenly spaced on the outer side of the rotating wheel around its central axis, and the positioning rod is provided with an external card slot near the long rotating notch.

[0011] Preferably: the clamping mechanism comprises an electric push rod and a power supply assembly arranged on both sides of the concave round block, the output end of the electric push rod is fixedly connected with an arc clamp plate, the arc clamp plate is placed in the concave round block, and the power supply assembly is used to supply power to the electric push rod.

[0012] Preferably, an inner slot is provided inside the positioning rod near the outer slot, a spring is provided on the inner wall of the inner slot, and a magnetic conductor is fixedly connected to one end of the spring away from the inner wall of the inner slot.

[0013] Preferably: the spring and the magnetic conductor are both conductive, the spring is non-conductive, the external card slot is conductive, and the spring, the magnetic conductor, the external card slot, the power supply assembly and the electric push rod are connected in series through connecting wires to form a locking circuit.

[0014] Preferably, when the magnetic card block is rotated by the rotating wheel and enters the outer card slot, the magnetic conductor is attracted by the magnetic card block and fits the outer card slot to connect the locking circuit, and the spring and the outer card slot are both connected with connecting wires.

[0015] Preferably, the positioning rod located at the bottom is used to fix the test cylinder, and the positioning rod located at the top is used to fix the load cylinder.

[0016] Preferably, a connecting lug is provided in the middle of the top surface of the bottom rod, a bottom lifting lug is provided at the bottom of the test oil cylinder, and the bottom lifting lug and the connecting lug are connected by a fastener.

[0017] Preferably, the concave side of the concave round block located at the bottom is arranged downward, and the concave side of the concave round block located at the top is arranged upward.

[0018] Preferably, triangular blocks are provided on both sides of the lower part of the vertical pole to enhance the stability of the vertical pole.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: through the arrangement and cooperation of the U-shaped test bench, the positioning rod, the first rotating shaft and the second rotating shaft, etc., the convenient and controllable up and down adjustment and automatic fixing of the upper and lower positioning rods are utilized, so that the test bench can adapt to load cylinders or test cylinders of different heights and strokes, and the degree of automation is high, thereby improving the test efficiency of the test cylinder, and through the arrangement and coordinated use of the reinforcement mechanism and the clamping mechanism, the positioning rod is not easy to deviate up and down during the work of the load cylinder or the test cylinder, thereby ensuring the stability of the test bench, thereby making the performance test results of the test bench for the test cylinder more accurate, and the activation of the reinforcement mechanism will automatically start the clamping mechanism to achieve rapid tightening of the load cylinder or the test cylinder, making the installation more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 It is the overall structural view of the present invention;

[0022] Figure 2 It is a schematic diagram of the inner side of the neutral pole of the present invention;

[0023] Figure 3 A cross-sectional view of the present invention as a whole;

[0024] Figure 4 It is a schematic diagram of the connection between the reinforcement mechanism and the clamping mechanism in the present invention;

[0025] Figure 5 for Figure 4 A magnified schematic diagram of center A.

[0026] In the figure: 1. vertical pole; 101. triangular block; 102. inner slide groove; 103. first rotating shaft; 104. second rotating shaft; 2. bottom pole; 201. connecting lug; 202. fastener; 3. first motor; 301. second motor; 4. positioning rod; 401. concave round block; 402. through-hole; 5. reinforcement mechanism; 501. rotating long notch; 502. fixed shaft; 503. rotating wheel; 504. magnetic clamping block; 6. clamping mechanism; 601. outer clamping groove; 602. inner clamping groove; 603. spring; 604. connecting wire; 605. socket; 606. power supply assembly; 607. electric push rod; 608. arc clamp; 7. load cylinder; 8. test cylinder; 801. bottom lifting lug. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] Reference Figure 1-5 As shown, the present invention provides a technical solution of a test bench suitable for hydraulic cylinder performance testing:

[0031] A test bench suitable for testing the performance of a hydraulic cylinder, comprising a U-shaped bench consisting of two vertical poles 1 and a bottom pole 2, wherein the vertical pole 1 is provided with a T-shape, and the stability of the U-shaped bench is increased by increasing the contact area between the bottom surfaces thereof, the bottom pole 2 is arranged between the bottoms of the inner side surfaces of the two vertical poles 1, the inner side surfaces of the vertical poles 1 are provided with an inner slide groove 102, the tops of the two vertical poles 1 are respectively provided with a first motor 3 and a second motor 301, the output end of the first motor 3 extends into the inner slide groove 102 and is fixedly connected to a first rotating shaft 103, the output end of the second motor 301 extends into the inner slide groove 102 and is fixedly connected to A second rotating shaft 104 is connected, a thread is provided on the lower portion of the outer side surface of the first rotating shaft 103, and a thread is provided on the upper portion of the outer side surface of the second rotating shaft 104. Through such a configuration, the first motor 3 is used to control the up and down movement of the positioning rod 4 located below to adapt to the test cylinder 8 of different heights, and the second motor 301 is used to control the up and down movement of the positioning rod 4 located above to conveniently adjust the height of the load cylinder 7, which is convenient for the installation and disassembly of the test cylinder 8, pressure sensors, temperature sensors and displacement sensors, etc. The specific installation process of the above-mentioned various sensors is the existing technology and will not be elaborated here.

[0032] Reference Figure 3 As shown, further, two positioning rods 4 are respectively arranged between the first rotating shaft 103 and the second rotating shaft 104, and the positioning rod 4 includes sockets 605 arranged at both ends thereof. The socket 605 on the upper positioning rod 4 is slidably connected to the first rotating shaft 103 and is threadedly connected to the second rotating shaft 104, and the socket 605 on the lower positioning rod 4 is threadedly connected to the first rotating shaft 103 and is slidably connected to the second rotating shaft 104. Through such a setting, when the first motor 3 is started, it drives the first rotating shaft 103 to rotate, so that the positioning rod 4 located at the bottom moves up and down. Correspondingly, when the second motor 301 is started, it drives the second rotating shaft 104 to rotate, so that the positioning rod 4 located at the top moves up and down.

[0033] Reference Figure 3 and Figure 4 As shown, further, a concave round block 401 is provided in the middle section of the positioning rod 4, and a through hole 402 is opened at the center of the inner bottom surface of the concave round block 401, wherein the through hole 402 is used for the extension of the movable end of the load cylinder 7 or the test cylinder 8.

[0034] Reference Figure 1 As shown, a reinforcing mechanism 5 is provided on the side of the vertical pole 1 close to the positioning rod 4, which is used to strengthen the position of the positioning rod 4 on the first rotating shaft 103 or the second rotating shaft 104. A clamping mechanism 6 is provided on the positioning rod 4, which is used to fasten the load cylinder 7 or the test cylinder 8 on the positioning rod 4, so as to always maintain a vertical state.

[0035] Through the arrangement and cooperation of the U-shaped test bench, the positioning rod 4, the first rotating shaft 103 and the second rotating shaft 104, etc., the convenient controllable up and down adjustment and automatic fixing of the upper and lower positioning rods 4 are utilized, so that the test bench can adapt to the load cylinders 7 or test cylinders 8 of different heights and strokes, and the degree of automation is high, thereby improving the test efficiency of the test cylinder 8, and through the arrangement and coordinated use of the reinforcement mechanism 5 and the clamping mechanism 6, the positioning rod 4 is not easy to deviate up and down during the work of the load cylinder 7 or the test cylinder 8, thereby ensuring the stability of the test bench, thereby making the performance test results of the test cylinder 8 of the test bench more accurate, and the activation of the reinforcement mechanism 5 will automatically start the clamping mechanism 6 to achieve rapid tightening of the load cylinder 7 or the test cylinder 8, making the installation more convenient and efficient.

[0036] Reference Figure 1-5As shown, in an optional embodiment, the reinforcement mechanism 5 includes a rotating long notch 501 opened at the corner of the vertical pole 1 near the positioning rod 4, and a fixed shaft 502 is vertically arranged in the rotating long notch 501, wherein the fixed shaft 502 cannot rotate, and a plurality of rotating wheels 503 are rotatably connected to the fixed shaft 502, wherein the plurality of rotating wheels 503 are arranged at equal intervals, and a plurality of magnetic blocks 504 are arranged on the outer side surface of the rotating wheel 503 at equal intervals around its central axis. In the present embodiment, three magnetic blocks 504 are arranged. It should be noted that the number of magnetic blocks 504 needs to ensure that the user can rotate the rotating wheel 503 to disengage the magnetic block 504 from the outer card slot 601, and the positioning rod 4 is provided with an outer card slot 601 near the rotating long notch 501.

[0037] Reference Figure 1-5 As shown, in an optional embodiment, the clamping mechanism 6 includes an electric push rod 607 and a power supply assembly 606 arranged on both sides of the concave round block 401, and the output end of the electric push rod 607 is fixedly connected with an arc clamp 608, and the arc clamp 608 is placed in the concave round block 401. The power supply assembly 606 is used to supply power to the electric push rod 607. Through such a setting, when the power supply assembly 606 is turned on, the electric push rod 607 will start, so that the arc clamps 608 located on both sides of the concave round block 401 will approach each other, thereby clamping the load cylinder 7 or the test cylinder 8.

[0038] Reference Figure 5 As shown, in an optional embodiment, an inner slot 602 is provided inside the positioning rod 4 near the outer slot 601, and a spring 603 is provided on the inner wall of the inner slot 602. The end of the spring 603 away from the inner wall of the inner slot 602 is fixedly connected with a magnetic conductor, wherein it should be noted that the magnetic conductor is a material that can be attracted by the magnetic block 504 and can conduct electricity, and iron can be selected.

[0039] It should be noted that both the spring 603 and the magnetic conductor are conductive, but the spring 603 is not conductive. Figure 4 As shown, the outer card slot 601 is conductive, and the spring 603, the magnetic conductor, the outer card slot 601, the power supply component 606 and the electric push rod 607 are connected in series through the connecting wire 604 to form a locking circuit.

[0040] When the magnetic card block 504 is rotated by the rotating wheel 503 and enters the outer card slot 601, the magnetic conductor is attracted by the magnetic card block 504 and fits the outer card slot 601 to connect the locking circuit. The spring 603 and the outer card slot 601 are both connected with a connecting wire 604. Through such a setting, when the reinforcement mechanism 5 is enabled, the clamping mechanism 6 will be automatically started, so that the tightening of the load cylinder 7 or the test cylinder 8 is very convenient, and it is started after the reinforcement mechanism 5 is enabled, avoiding the positioning rod 4 from being offset when tightening the load cylinder 7 or the test cylinder 8 due to the positioning rod 4 not being reinforced, and ultimately causing the active ends of the load cylinder 7 and the test cylinder 8 to be not on the same vertical line, thereby causing the test result of the test cylinder 8 to be inaccurate.

[0041] During actual use of the test bench, the positioning rod 4 located at the bottom is used to fix the test cylinder 8, and the positioning rod 4 located at the top is used to fix the load cylinder 7. Furthermore, a connecting lug 201 is provided in the middle of the top surface of the bottom rod 2, and a bottom lifting lug 801 is provided at the bottom of the test cylinder 8. The bottom lifting lug 801 and the connecting lug 201 are connected by a fastener 202, wherein the fastener 202 can be a bolt and a nut matching it. In actual use, the bolt will pass through the connecting lug 201 and the bottom lifting lug 801 and be threadedly connected with the nut to fasten the test cylinder 8 to the middle of the top surface of the bottom rod 2, and the test cylinder 8 always remains in a vertical position.

[0042] It should be noted that the concave side of the concave round block 401 located at the bottom is set downward, and the concave side of the concave round block 401 located at the top is set upward, which is to match the installation method of the test cylinder 8 and the load cylinder 7.

[0043] Reference Figure 2 As shown, during the test, the pole 1 has to withstand the reaction force of the test cylinder 8 or the load cylinder 7 during work, so the pole 1 needs to have high stability. Therefore, triangular blocks 101 are provided on both sides of the lower part of the pole 1 to enhance the stability of the pole 1.

[0044] The working principle of the test bench is now briefly described through its actual working process: when using the test bench to perform a performance test on the test cylinder 8, according to the length of the test cylinder 8, first start the first motor 3 to make the positioning rod 4 move upward to the appropriate position to leave enough space for installing the test cylinder 8, and then fix the bottom end of the test cylinder 8 on the bottom rod 2, and then start the first motor 3 to make the positioning rod 4 move downward until the top end of the test cylinder 8 extends into the concave round block 401 on the positioning rod 4 located below, and then start the second motor 301 to adjust the up and down positions of the positioning rod 4 located above, and place the load cylinder 7 downward into the concave round block 401 on the positioning rod 4 located above; when the positions of the load cylinder 7 and the test cylinder 8 are adjusted After the adjustment is completed and all the sensors related to the test are installed, the user only needs to turn the rotating wheel 503 to make the magnetic block 504 rotate into the outer slot 601. Since the magnetic block 504 is close to the magnetic conductor, the magnetic conductor fits the outer slot 601, and then the locking circuit is connected, so that the arc clamps 608 on both sides of the concave round block 401 are close to each other at the same time, completing the fastening of the load cylinder 7 or the test cylinder 8 in a vertical state. At the same time, since the magnetic block 504 is screwed into the outer slot 601, the positioning rod 4 is not easy to deviate up and down during the work of the load cylinder 7 or the test cylinder 8, thereby ensuring the stability of the test bench, thereby making the performance test results of the test cylinder 8 of the test bench more accurate.

[0045] It should be noted that when the test bench is turning the rotating wheel 503, the user needs to first operate the rotating wheel 503 on the same side of the two uprights 1, and then operate the rotating wheels 503 on both sides of the two uprights 1. Only in this way can the electric push rods 607 located on both sides of the concave round block 401 be started at the same time, and then the arc clamping plates 608 located on both sides of the concave round block 401 can be close to each other at the same time, ensuring that the load cylinder 7 and the test cylinder 8 are always in a vertical state.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test bench suitable for hydraulic cylinder performance testing, characterized by: The invention comprises a U-shaped platform consisting of two vertical poles (1) and a bottom pole (2), wherein the bottom pole (2) is arranged between the bottom of the inner side surfaces of the two vertical poles (1), the inner side surfaces of the vertical poles (1) are provided with inner slide grooves (102), the tops of the two vertical poles (1) are provided with a first motor (3) and a second motor (301), respectively, the output end of the first motor (3) extends into the inner slide groove (102) and is fixedly connected to a first rotating shaft (103), the output end of the second motor (301) extends into the inner slide groove (102) and is fixedly connected to a second rotating shaft (104), the lower part of the outer side surface of the first rotating shaft (103) is provided with a thread, and the upper part of the outer side surface of the second rotating shaft (104) is provided with a thread; Two positioning rods (4) are respectively arranged between the first rotating shaft (103) and the second rotating shaft (104), and the positioning rod (4) includes sockets (605) arranged at both ends thereof, the socket (605) on the upper positioning rod (4) is slidably connected to the first rotating shaft (103) and is threadedly connected to the second rotating shaft (104), and the socket (605) on the lower positioning rod (4) is threadedly connected to the first rotating shaft (103) and is slidably connected to the second rotating shaft (104); The middle section of the positioning rod (4) is provided with a concave round block (401), and a through hole (402) is opened at the center of the inner bottom surface of the concave round block (401); A reinforcing mechanism (5) is provided on the side of the vertical pole (1) close to the positioning pole (4), and a clamping mechanism (6) is provided on the positioning pole (4).

2. A test bench suitable for hydraulic cylinder performance testing according to claim 1, characterized in that: The reinforcing mechanism (5) comprises a rotating long notch (501) provided at a corner of the vertical pole (1) close to the positioning pole (4); a fixed shaft (502) is vertically arranged in the rotating long notch (501); a plurality of rotating wheels (503) are rotatably connected to the fixed shaft (502); a plurality of magnetic clamping blocks (504) are arranged at equal intervals on the outer side surface of the rotating wheel (503) around its central axis; and an external clamping groove (601) is arranged near the rotating long notch (501) of the positioning pole (4).

3. A test bench suitable for hydraulic cylinder performance testing according to claim 2, characterized in that: The clamping mechanism (6) comprises an electric push rod (607) and a power supply assembly (606) arranged on both sides of the concave round block (401); the output end of the electric push rod (607) is fixedly connected to an arc clamp plate (608), and the arc clamp plate (608) is placed in the concave round block (401); the power supply assembly (606) is used to supply power to the electric push rod (607).

4. A test bench suitable for hydraulic cylinder performance testing according to claim 3, characterized in that: An inner slot (602) is provided inside the positioning rod (4) near the outer slot (601), a spring (603) is provided on the inner wall of the inner slot (602), and one end of the spring (603) away from the inner wall of the inner slot (602) is fixedly connected to a magnetic conductor.

5. A test bench suitable for hydraulic cylinder performance testing according to claim 4, characterized in that: The spring (603) and the magnetic conductor are both conductive, the spring (603) is non-conductive, and the external card slot (601) is conductive. The spring (603), the magnetic conductor, the external card slot (601), the power supply component (606) and the electric push rod (607) are connected in series via a connecting wire (604) to form a locking circuit.

6. A test bench suitable for hydraulic cylinder performance testing according to claim 5, characterized in that: When the magnetic card block (504) is rotated by the rotating wheel (503) and enters the outer card slot (601), the magnetic conductor is attracted by the magnetic card block (504) and fits the outer card slot (601) to connect the locking circuit. The spring (603) and the outer card slot (601) are both connected to a connecting wire (604).

7. A test bench suitable for hydraulic cylinder performance testing according to claim 1, characterized in that: The positioning rod (4) located at the bottom is used to fix the test cylinder (8), and the positioning rod (4) located at the top is used to fix the load cylinder (7).

8. A test bench suitable for hydraulic cylinder performance testing according to claim 7, characterized in that: A connecting lug (201) is provided in the middle of the top surface of the bottom rod (2), a bottom lifting lug (801) is provided at the bottom of the test oil cylinder (8), and the bottom lifting lug (801) and the connecting lug (201) are connected via a fastener (202).

9. A test bench suitable for hydraulic cylinder performance testing according to claim 8, characterized in that: The concave side of the concave round block (401) located at the bottom is arranged downward, and the concave side of the concave round block (401) located at the top is arranged upward.

10. A test bench suitable for hydraulic cylinder performance testing according to claim 9, characterized in that: Triangular blocks (101) are provided on both sides of the lower part of the upright pole (1).

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