Load device for simulating the push-pull of a cable

Abstract

A load device for simulating the push-pull of a steel cable, comprising a base, vertical plates, a rotating shaft, a rocker arm, a friction disc and friction plates. Vertical plates are symmetrically arranged on the left and right at the upper end of the base. Horizontal shaft holes are coaxially arranged on the two vertical plates. The two vertical plates are jointly connected with the rotating shaft through the shaft holes. The friction disc is connected to the inner sides of the two vertical plates by a first cylindrical pin. The center of the friction disc is connected to the rotating shaft. One end of the rocker arm is rotatably connected to the middle of the rotating shaft. The left and right end faces of the rocker arm are respectively connected with friction plates by second cylindrical pins. The two end faces of the two friction plates away from each other are in frictional contact with the two end faces of the two friction discs close to each other. A load adjustment mechanism for controlling the tightness of the fit between the friction disc and the friction plate is arranged on the rotating shaft. The load device for simulating the push-pull of a steel cable proposed by the present invention facilitates the full test verification of the service life of the steel cable and ensures the authenticity and credibility of the test data.

Description

Technical Field

[0001] The invention relates to the technical field of steel cable push-pull load equipment, in particular to a load device for simulating steel cable push-pull. Background Art

[0002] Steel cables are used to transmit force and displacement. They are widely used in the fields of engine control, rotor brake control, wheel brake control, etc. of aircraft and helicopters. Steel cables need to transmit thrust and tension, and bear alternating loads and generate alternating stress during work. Alternating stress is an important factor affecting the life of steel cables, and life is an important technical indicator of steel cable products. In order to ensure that the life of the steel cable can meet the requirements, it is necessary not only to conduct theoretical analysis and calculation of the life of the steel cable, but also to conduct experimental verification of the life of the steel cable. In order to fully test and verify the life of the steel cable and ensure the authenticity and credibility of the test data, it is necessary to simulate the actual load for testing. How to simulate the actual load has become a technical problem that urgently needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to propose a load device for simulating the push and pull of a steel cable to solve the above problems, so as to achieve sufficient test verification of the life of the steel cable and ensure the authenticity and credibility of the test data.

[0004] To achieve the above purpose, the following technical scheme is adopted: a load device for simulating the push and pull of a steel cable, comprising a base, a vertical plate, a rotating shaft, a rocker arm, a friction disc and a friction plate, the upper end of the base is symmetrically provided with vertical plates, horizontal shaft holes are coaxially provided on the two vertical plates, the two vertical plates are commonly connected to the rotating shaft through the shaft holes, the two vertical plates are also provided with a first mounting hole, the first mounting hole is located on one side of the shaft hole, a first cylindrical pin is installed on the first mounting hole, friction discs are symmetrically connected to the rotating shaft located between the vertical plates, a first positioning hole is provided on the side of the two friction discs away from each other, one end of the two first cylindrical pins is respectively connected to the corresponding first positioning holes,

[0005] One end of the rocker arm is rotatably connected to the middle of the rotating shaft, the rocker arm is symmetrically provided with a second mounting hole with the rotating shaft as the center, and two second mounting holes are installed with second cylindrical pins, friction plates are provided on both sides of the rocker arm, and the end surfaces of the two friction plates close to each other are provided with second positioning holes, and the two ends of the second cylindrical pin are respectively connected to the corresponding second positioning holes, and the two end surfaces of the two friction plates far away from each other are respectively frictionally fitted with the two end surfaces of the two friction discs close to each other.

[0006] The rotating shaft is provided with a load adjustment mechanism for controlling the tightness of the friction disc and the friction plate.

[0007] Preferably, the load adjusting mechanism includes a spring and a fixing nut fixedly arranged at the left end of the rotating shaft. The spring is sleeved on the rotating shaft, and the spring is located between the right vertical plate and the adjacent friction disc. A bushing is arranged on the rotating shaft, and the bushing is movably connected to the right shaft hole. One end of the bushing abuts against the end face of the spring. A first thread is arranged at the right end of the rotating shaft, and an adjusting nut is threadedly connected to the right end of the rotating shaft through the first thread. The side of the adjusting nut close to the vertical plate abuts against the other end of the bushing.

[0008] Preferably, the load adjusting mechanism includes two springs and a fixing nut fixedly arranged at the end of the rotating shaft. The two springs are both sleeved on the rotating shaft, and the springs are respectively located between the vertical plate and the adjacent friction disc.

[0009] Two sliding sleeves are respectively installed on the two shaft holes. The outside of the sliding sleeve is slidably connected to the shaft hole through a sliding member.

[0010] The rotating shaft is symmetrically provided with second threads with opposite helix directions on the left and right. An internal thread matched with the second thread is arranged in the sliding sleeve.

[0011] The adjacent ends of the two sliding sleeves respectively abut against the end faces of the two springs away from each other.

[0012] Preferably, a washer is arranged between the fixing nut and the adjacent vertical plate.

[0013] Preferably, the sliding member includes a sliding groove, a clamping groove and a rolling ball. The sliding grooves are symmetrically arranged on the outer wall of the sliding sleeve, and the sliding grooves are arranged in the same direction as the shaft hole. The clamping grooves are symmetrically arranged on the hole wall of the shaft hole. The rolling ball is installed in the cavity formed by the sliding groove and the clamping groove, and one end of the rolling ball is attached to the bottom of the sliding groove, and the other end of the rolling ball is attached to the bottom of the clamping groove.

[0014] Preferably, both the friction disc and the friction plate are arranged in a disc shape.

[0015] Preferably, a connecting hole is arranged at the other end of the rocker arm.

[0016] Preferably, fixing holes are arranged on the base.

[0017] Preferably, a through hole matched with the first cylindrical pin is arranged on the spring.

[0018] Preferably, grooves are formed on the left and right end faces of the rocker arm, and convex platforms matched with the grooves are arranged on the friction plate.

[0019] The beneficial effects obtained by the present invention:

[0020] 1. Compared with the prior art, by providing a base, a vertical plate, a rotating shaft, a rocker arm, a friction disc, a friction plate, a shaft hole, a first mounting hole, a first cylindrical pin, a first positioning hole, a second mounting hole, a second cylindrical pin, a second positioning hole and a load adjusting mechanism, it is convenient to simulate the actual load for testing, thereby fully verifying the life of the steel cable through testing and ensuring the authenticity and credibility of the test data. At the same time, angular positioning of the friction disc is achieved, preventing the friction disc from rotating and the relative rotation between the rocker arm and the friction plate.

[0021] 2. Compared with the prior art, by providing a spring, a fixing nut, a bushing and an adjusting nut, it is convenient to adjust the push / pull force alternating load from one direction, achieving the effects of convenient and fast operation.

[0022] 3. Compared with the prior art, by providing a spring, a fixing nut, a sliding sleeve and a sliding member, when the rotating shaft rotates, the effect of uniformly adjusting the push / pull force alternating load in two directions can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural view of the load device for simulating the push / pull of a steel cable according to the present invention.

[0024] Figure 2 It is a schematic top view structural view of the load device for simulating the push / pull of a steel cable according to the present invention.

[0025] Figure 3 It is a schematic side view structural view of the load device for simulating the push / pull of a steel cable according to the present invention.

[0026] Figure 4 It is a schematic structural view of the connection between the base and the vertical plate of the load device for simulating the push / pull of a steel cable according to the present invention.

[0027] Figure 5 It is a schematic side view structural view of the friction disc of the load device for simulating the push / pull of a steel cable according to the present invention.

[0028] Figure 6 It is a schematic front view structural view of the friction disc of the load device for simulating the push / pull of a steel cable according to the present invention.

[0029] Figure 7 It is a schematic side view structural view of the rocker arm of the load device for simulating the push / pull of a steel cable according to the present invention.

[0030] Figure 8 It is a schematic structural view of the friction plate of the load device for simulating the push / pull of a steel cable according to the present invention.

[0031] Figure 9 It is a schematic side view structural view of the friction plate of the load device for simulating the push / pull of a steel cable according to the present invention.

[0032] Figure 10Schematic diagram of the spring structure of the load device for simulating the pushing and pulling of steel cables according to the present invention.

[0033] Figure 11 Schematic diagram of another load adjustment mechanism of the load device for simulating the pushing and pulling of steel cables according to the present invention.

[0034] Figure 12 is Figure 11 Enlarged structure diagram at position A in

[0035] In the figure, 1 - base, 2 - vertical plate, 3 - rotating shaft, 4 - rocker arm, 5 - friction disc, 6 - friction plate, 7 - shaft hole, 8 - first mounting hole, 9 - first cylindrical pin, 10 - first positioning hole, 11 - second mounting hole, 12 - second cylindrical pin, 13 - second positioning hole, 14 - load adjustment mechanism, 141 - spring, 142 - fixing nut, 143 - bushing, 144 - adjusting nut, 145 - sliding sleeve, 146 - sliding member, 1461 - sliding groove, 1462 - clamping groove, 1463 - rolling ball, 15 - washer, 16 - connecting hole, 17 - fixing hole, 18 - through hole. Specific embodiments

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 thus should not be construed as a limitation to the present invention.

[0038] Refer to the attached Figures 1-12 , a load device for simulating the pushing and pulling of steel cables, includes a base 1, vertical plates 2, a rotating shaft 3, a rocker arm 4, a friction disc 5 and a friction plate 6. The upper end of the base 1 is symmetrically provided with vertical plates 2 on the left and right. A horizontal shaft hole 7 is coaxially provided on the two vertical plates 2. The two vertical plates 2 are commonly connected with a rotating shaft 3 through the shaft hole 7. The two vertical plates 2 are also provided with first mounting holes 8. The first mounting holes 8 are located on one side of the shaft hole 7. A first cylindrical pin 9 is mounted on the first mounting holes 8. On the rotating shaft 3 between the vertical plates 2, friction discs 5 are symmetrically connected on the left and right. On the side of the two friction discs 5 away from each other, first positioning holes 10 are provided. One end of the two first cylindrical pins 9 is respectively connected to the corresponding first positioning holes 10, so as to realize angular positioning and anti-rotation of the friction disc 5.

[0039] One end of the rocker arm 4 is rotatably connected to the middle of the rotating shaft 3. The rocker arm 4 is symmetrically provided with second mounting holes 11 centered on the rotating shaft 3. Second cylindrical pins 12 are mounted on the two second mounting holes 11. Friction plates 6 are arranged on both sides of the rocker arm 4. Second positioning holes 13 are arranged on the end faces of the two friction plates 6 close to each other. The two ends of the second cylindrical pin 12 are respectively connected to the corresponding second positioning holes 13, so as to prevent the rocker arm 4 from rotating relative to the friction plates 6. The two end faces of the two friction plates 6 away from each other are respectively in frictional contact with the two end faces of the two friction discs 5 close to each other.

[0040] A load adjusting mechanism 14 for controlling the tightness of the fit between the friction disc 5 and the friction plate 6 is arranged on the rotating shaft 3. Among them, both the friction disc 5 and the friction plate 6 are arranged in a disc shape. By arranging the base 1, the vertical plate 2, the rotating shaft 3, the rocker arm 4, the friction disc 5, the friction plate 6, the shaft hole 7, the first mounting hole 8, the first cylindrical pin, the first positioning hole 10, the second mounting hole 11, the second cylindrical pin 12, the second positioning hole 13 and the load adjusting mechanism 14, it is convenient to simulate the actual load for testing, so as to fully test and verify the life of the steel cable, and ensure the authenticity and credibility of the test data.

[0041] In this embodiment, in order to facilitate the adjustment of the push / pull force alternating load, the load adjusting mechanism 14 includes a spring 141 and a fixing nut 142 fixedly arranged at the left end of the rotating shaft 3. The spring 141 is sleeved on the rotating shaft 3, and the spring 141 is located between the right vertical plate 2 and the adjacent friction disc 5. A bushing 143 is arranged on the rotating shaft 3, and the bushing 143 is movably connected to the right shaft hole 7. One end of the bushing 143 abuts against the end face of the spring 141. A first thread is arranged at the right end of the rotating shaft 3. The right end of the rotating shaft 3 is threadedly connected with an adjusting nut 144 through the first thread. The side of the adjusting nut 144 close to the vertical plate 2 abuts against the other end of the bushing 143, so as to provide a push / pull force alternating load for the steel cable life test, ensure the authenticity and credibility of the test data, and has good practicability; at the same time, during the use process, by rotating the adjusting nut 144 alone, the adjusting nut 144 is made to push the arranged bushing 143. Since the left side of the bushing 143 abuts against the spring 141, the spring 141 deforms, so as to control the frictional force between the friction disc 5 and the adjacent friction plate 6, thereby adjusting the push / pull force alternating load from one direction and achieving the effects of convenient and fast operation.

[0042] In this embodiment, in order to facilitate the adjustment of the push / pull force alternating load, the load adjusting mechanism 14 includes two springs 141 and a fixing nut 142 fixedly arranged at the end of the rotating shaft 3. The two springs 141 are both sleeved on the rotating shaft 3, and the springs 141 are respectively located between the vertical plate 2 and the adjacent friction disc 5.

[0043] Two sliding sleeves 145 are respectively installed on the two shaft holes 7, and the outside of the sliding sleeve 145 is slidably connected to the shaft hole 7 through a sliding member 146.

[0044] On the rotating shaft 3, second threads with opposite helix directions are symmetrically arranged on the left and right. An internal thread that mates with the second thread is provided in the sliding sleeve 145.

[0045] One end of the two sliding sleeves 145 close to each other abuts against the end faces of the two springs 141 that are away from each other, thereby providing a push / pull force alternating load for the steel cable life test, ensuring the authenticity, credibility, and good practicability of the test data. At the same time, during use, by rotating the fixing nut 142 alone, since the second threads with opposite helix directions are symmetrically arranged on the left and right of the rotating shaft 3, and an internal thread that mates with the second thread is provided in the sliding sleeve 145, and the outside of the sliding sleeve 145 is slidably connected to the shaft hole 7 through the sliding member 146, when the fixing nut 142 drives the rotating shaft 3 to rotate, the two sliding sleeves 145 approach or move away from each other, thereby pushing the two springs 141 to deform, so as to uniformly control the frictional force between the friction disc 5 and the adjacent friction plate 6 in two directions, so as to achieve the effect of uniformly adjusting the push / pull force alternating load in two directions when the rotating shaft 3 rotates.

[0046] To facilitate the fixing of the fixing nut 142, a washer 15 is provided between the fixing nut 142 and the adjacent vertical plate 2.

[0047] In this embodiment, to facilitate the sliding of the sliding sleeve 145, the sliding member 146 includes a sliding groove 1461, a clamping groove 1462, and a rolling ball 1463. The sliding grooves 1461 are symmetrically arranged on the outer wall of the sliding sleeve 145, and the sliding grooves 1461 are arranged in the same direction as the shaft hole 7. The clamping grooves 1462 are symmetrically arranged on the hole wall of the shaft hole 7. The rolling ball 1463 is installed in the cavity formed by the sliding groove 1461 and the clamping groove 1462, and one end of the rolling ball 1463 is in contact with the bottom of the sliding groove 1461, and the other end of the rolling ball 1463 is in contact with the bottom of the clamping groove 1462.

[0048] In this embodiment, to facilitate the connection of the tensile and compressive force sensor to the rocker arm 4, a connection hole 16 is provided at the other end of the rocker arm 4.

[0049] In this embodiment, to facilitate the fixing of the load device on the test bench, fixing holes 17 are provided on the base 1.

[0050] Among them, a through hole 18 that mates with the first cylindrical pin 9 is provided on the spring 141, which is convenient for angular positioning of the spring 18 and prevents the spring 18 from rotating.

[0051] In this embodiment, to further facilitate the connection between the rocker arm 4 and the friction plate 6, grooves are provided on the left and right end faces of the rocker arm 4, and bosses matching the grooves are provided on the friction plate 6. Among them, the cross-section of the groove is one of a circle, a regular polygon, and a tooth shape. Among them, Figure 7 it is the structure that the cross-section of the groove provided on the end face of the rocker arm 4 is a circle; when the cross-section of the groove is a regular polygon or a tooth shape, the connection between the groove with a regular polygon or tooth-shaped cross-section and the boss can replace the connection between the rocker arm and the friction plate through the second cylindrical pin, thereby also avoiding the relative rotation between the rocker arm 4 and the friction plate 6.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. A load device for simulating the push-pull of a steel cable, comprising a base (1), a vertical plate (2), a rotating shaft (3), a rocker arm (4), a friction disc (5) and a friction plate (6), characterized in that: On the upper end of the base (1), vertical plates (2) are symmetrically arranged on the left and right. On the two vertical plates (2), horizontal shaft holes (7) are coaxially arranged. The two vertical plates (2) are jointly connected with a rotating shaft (3) through the shaft holes (7). On the two vertical plates (2), there are also first mounting holes (8). The first mounting holes (8) are located on one side of the shaft holes (7). A first cylindrical pin (9) is installed on the first mounting holes (8). On the rotating shaft (3) between the vertical plates (2), friction discs (5) are symmetrically connected on the left and right. On one side of the two friction discs (5) away from each other, there are first positioning holes (10). One end of each of the two first cylindrical pins (9) is connected to the corresponding first positioning hole (10). One end of the rocker arm (4) is rotatably connected to the middle of the rotating shaft (3). The rocker arm (4) is symmetrically provided with second mounting holes (11) centered on the rotating shaft (3). A second cylindrical pin (12) is installed on the two second mounting holes (11). Friction plates (6) are arranged on both sides of the rocker arm (4). On the end faces of the two friction plates (6) close to each other, there are second positioning holes (13). The two ends of the second cylindrical pin (12) are respectively connected to the corresponding second positioning holes (13). The two end faces of the two friction plates (6) away from each other are respectively in frictional contact with the two end faces of the two friction discs (5) close to each other. On the rotating shaft (3), there is a load adjusting mechanism (14) for controlling the tightness of the fit between the friction disc (5) and the friction plate (6). The load adjusting mechanism (14) includes two springs (141) and a fixing nut (142) fixedly arranged at the end of the rotating shaft (3). The two springs (141) are both sleeved on the rotating shaft (3), and the springs (141) are respectively located between the vertical plate (2) and the adjacent friction disc (5). Two sliding sleeves (145) are respectively installed on the two shaft holes (7). The outside of the sliding sleeve (145) is slidably connected to the shaft hole (7) through a sliding member (146). On the rotating shaft (3), second threads with opposite helix directions are symmetrically arranged on the left and right. An internal thread matching the second thread is arranged in the sliding sleeve (145). One ends of the two sliding sleeves (145) close to each other are respectively abutted against the end faces of the two springs (141) away from each other. The sliding member (146) includes a sliding groove (1461), a clamping groove (1462) and a rolling ball (1463). The sliding grooves (1461) are symmetrically arranged on the outer wall of the sliding sleeve (145), and the sliding grooves (1461) are arranged in the same direction as the shaft hole (7). The clamping grooves (1462) are symmetrically arranged on the hole wall of the shaft hole (7). The rolling ball (1463) is installed in the cavity jointly formed by the sliding groove (1461) and the clamping groove (1462), and one end of the rolling ball (1463) is in contact with the bottom of the sliding groove (1461), and the other end of the rolling ball (1463) is in contact with the bottom of the clamping groove (1462).

2. The load device for simulating the push-pull of a steel cable according to claim 1, characterized in that: Both the friction disc (5) and the friction plate (6) are arranged in a disc shape.

3. The load device for simulating the push-pull of a steel cable according to claim 1, characterized in that: On the other end of the rocker arm (4), there is a connection hole (16).

4. The load device for simulating the push-pull of a steel cable according to claim 1, wherein: The base (1) is provided with fixing holes (17).

5. The load device for simulating the push-pull of a steel cable according to claim 1, characterized in that: The spring (141) is provided with through holes (18) which cooperate with the first cylindrical pin (9).

6. The load device for simulating the push-pull of a steel cable according to claim 1, characterized in that: The left and right end faces of the rocker arm (4) are provided with grooves, and the friction plate (6) is provided with bosses which cooperate with the grooves.

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