Portable pendulum type friction coefficient tester

Abstract

The utility model discloses a portable pendulum type friction coefficient tester, which relates to the technical field of friction coefficients and comprises a base, a folding structure is fixedly mounted at the front end of the base, a support is rotatably connected to the top of the folding structure, and supporting legs are rotatably connected to the left and right parts of the folding structure. The front end of the top of the support is fixedly connected with a dial, the front end of the dial is rotatably connected with a pointer, the front end of the pointer is fixedly provided with a pendulum bob, the bottom of the base is fixedly provided with a fixing structure, the folding structure comprises a frame, and the rear end of the middle of the frame is fixedly connected to the front end of the base. According to the portable pendulum type friction coefficient tester, the support, the supporting legs and other parts of the friction coefficient tester can be folded under the action of the folding structure, so that the occupied space is reduced, the tester is convenient to store and carry, meanwhile, the tester is more flexible due to the design of the folding structure, and the practicability is high. And the method adapts to different use scenes and requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of friction coefficient, in particular to a portable pendulum-type friction coefficient tester. Background Art

[0002] The portable pendulum friction coefficient tester is an instrument used to measure the friction coefficient of materials such as roads and tires. The instrument adopts the pendulum friction coefficient measurement method to calculate the friction coefficient by measuring the friction force of the pendulum sliding on the road surface. It has the characteristics of small size, light weight, easy to carry, simple operation, high measurement accuracy, etc. It can be widely used in the friction coefficient measurement of roads such as highways, airports, bridges, etc., and can also be used for friction performance testing of materials such as tires and rubber.

[0003] For example, the Chinese patent with announcement number CN206740617U discloses a portable pendulum friction coefficient tester, in which the bottom of the main shaft is connected to the base through a self-locking folding structure; the lifting platform is sleeved on the top of the main shaft, and a rotating shaft is provided at the midpoint; a dial, a locking nut, a felt pad, a pointer, an adjusting nut and a pendulum are sleeved on the rotating shaft from the inside to the outside; a positioning claw is provided on the rear side of the vertical side of the dial, and the positioning claw is clamped on the outside of the main shaft. The utility model realizes the rapid assembly and folding storage of the instrument by means of a folding structure provided between the main shaft and the base, and a dial structure that can rotate around the lifting platform rotating shaft, thereby effectively reducing the footprint of the instrument and making it easy to carry.

[0004] The existing technology has the following problems:

[0005] In actual use, the friction coefficient meter will take up a large space when stored, which may lead to insufficient storage space and even affect the storage and use of other equipment. At the same time, it will take up more space and volume during transportation, increasing the difficulty and cost of transportation. At the same time, the large size also leads to limitations in the use of the friction coefficient meter. Utility Model Content

[0006] The utility model provides a portable pendulum friction coefficient tester to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A portable pendulum friction coefficient tester comprises a base, a folding structure is fixedly installed at the front end of the base, the top of the folding structure is rotatably connected to a bracket, the left and right parts of the folding structure are rotatably connected to support legs, the front end of the top of the bracket is fixedly connected to a dial, the front end of the dial is rotatably connected to a pointer, the front end of the pointer is fixedly installed with a pendulum, and the bottom of the base is fixedly installed with a fixed structure.

[0009] Preferably, the folding structure includes a frame, the rear end of the middle part of the frame is fixedly connected to the front end of the base, the top of the frame is rotatably connected to the bottom of the bracket, an electric telescopic rod is fixedly installed at the front end of the rear top of the frame, the output end of the electric telescopic rod is fixedly connected to a rectangular rod, the left and right positions of the front end of the rectangular rod are fixedly connected to racks, the left and right ends of the bottom of the bracket respectively extend out of the left and right sides of the top of the frame, the left and right ends of the bottom of the bracket are fixedly connected to gears, and the outer walls of the two gears are respectively meshed with the tops of the two racks.

[0010] Preferably, an elastic band is fixedly connected to the positions where the front ends of the two supporting legs are close to each other, and the elastic band is located in front of the frame.

[0011] Preferably, rectangular blocks are fixedly connected to the left and right positions of the rear part of the frame, and fixed blocks are slidably connected inside the two rectangular blocks. The outer walls of the two fixed blocks are respectively plugged into the middle parts of the top ends of the two supporting legs.

[0012] Preferably, the top ends of the two fixed blocks are fixedly connected with pull rods, the top ends of the two pull rods respectively extend out of the top ends of the two rectangular blocks, the top ends of the two pull rods are fixedly connected with operating plates, the outer walls of the tops of the two pull rods are fixedly connected with limiting rings, the two limiting rings are respectively located above the two rectangular blocks, the outsides of the bottom ends of the two pull rods are movably sleeved with first springs, the bottom ends of the two first springs are respectively fixedly connected to the top ends of the two pistons, and the top ends of the two first springs are respectively fixedly connected to the top ends of the inner cavities of the two rectangular blocks.

[0013] Preferably, the fixing structure comprises a suction cup, and the top end of the suction cup is fixedly connected to the rear portion of the bottom end of the base.

[0014] Preferably, a cavity is provided inside the base, the top end of the suction cup extends into the cavity, and a piston is slidably connected to the inside of the cavity.

[0015] Preferably, the top end of the piston is fixedly connected to a ramp block, the top end of the ramp block is slidably connected to a round rod, the outside of the round rod is movably sleeved with a second spring, the rear part of the base is threadedly connected to a threaded rod, the rear end of the threaded rod is fixedly connected to a handle, the front end of the threaded rod is fixedly connected to a top frame, the opposite surface of the front of the top frame is rotatably connected to a round roller, and the outer wall of the round roller overlaps the rear end of the ramp block.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides a portable pendulum-type friction coefficient tester. Through the folding structure, the bracket, supporting legs and other components of the friction coefficient tester can be folded, thereby reducing the occupied space and facilitating storage and carrying. At the same time, the design of the folding structure can also make the instrument more flexible and adapt to different usage scenarios and needs.

[0018] 2. The utility model provides a portable pendulum friction coefficient tester. Through the function of the fixing structure, the base and the placement surface can be fixed, thereby improving the use stability of the portable pendulum friction coefficient tester, reducing the influence of external factors (such as vibration, wind force, etc.) on the test results, and thus improving the quality and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the elastic band structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the limit ring structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the suction cup structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the inclined plane block structure of the utility model.

[0024] In the figure: 1, base; 2, supporting leg; 3, bracket; 4, dial; 5, pointer; 6, pendulum; 7, folding structure; 71, frame; 72, electric telescopic rod; 73, rectangular rod; 74, rack; 75, gear; 76, elastic band; 77, rectangular block; 78, fixed block; 79, pull rod; 710, operating panel; 711, first spring; 712, limiting ring; 8, fixed structure; 81, suction cup; 82, cavity; 83, piston; 84, inclined block; 85, round roller; 86, top frame; 87, threaded rod; 88, handle; 89, round rod; 810, second spring. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1As shown, a portable pendulum friction coefficient tester includes a base 1, a folding structure 7 is fixedly installed at the front end of the base 1, the top of the folding structure 7 is rotatably connected to a bracket 3, the left and right parts of the folding structure 7 are rotatably connected to support legs 2, the front end of the top of the bracket 3 is fixedly connected to a dial 4, the front end of the dial 4 is rotatably connected to a pointer 5, the front end of the pointer 5 is fixedly installed with a pendulum 6, and the bottom of the base 1 is fixedly installed with a fixed structure 8.

[0027] By providing the folding structure 7, the supporting legs 2, the bracket 3 and other components can be folded to a position close to the base 1, thereby achieving a portable effect.

[0028] like Figure 2 and Figure 3 As shown, the folding structure 7 includes a frame 71, the rear end of the middle part of the frame 71 is fixedly connected to the front end of the base 1, the top of the frame 71 is rotatably connected to the bottom of the bracket 3, an electric telescopic rod 72 is fixedly installed at the front end of the rear top of the frame 71, the output end of the electric telescopic rod 72 is fixedly connected to a rectangular rod 73, the left and right positions of the front end of the rectangular rod 73 are fixedly connected to racks 74, the left and right ends of the bottom of the bracket 3 extend out of the left and right sides of the top of the frame 71 respectively, the left and right ends of the bottom of the bracket 3 are fixedly connected to gears 75, and the outer walls of the two gears 75 are respectively meshed with the tops of the two racks 74.

[0029] By providing the gear 75 and the rack 74 , when the rack 74 slides under the action of the electric telescopic rod 72 , the gear 75 can be driven to rotate, and then the bracket 3 can be rotated.

[0030] like Figure 2 As shown, an elastic band 76 is fixedly connected to the positions where the front ends of the two supporting legs 2 are close to each other, and the elastic band 76 is located in front of the frame 71 .

[0031] By providing the elastic band 76 , the two support legs 2 can be rotated forward, and under the limiting effect of the frame 71 , the support legs 2 can achieve a stable supporting effect.

[0032] like Figure 3 As shown, rectangular blocks 77 are fixedly connected to the left and right positions of the rear part of the frame 71, and fixed blocks 78 are slidably connected inside the two rectangular blocks 77. The outer walls of the two fixed blocks 78 are respectively plugged into the middle parts of the top ends of the two supporting legs 2.

[0033] By providing the fixing block 78 and plugging the fixing block 78 with the supporting leg 2, the supporting leg 2 can be fixed to the side of the base 1, thereby achieving a folding effect.

[0034] like Figure 3As shown, the top ends of the two fixed blocks 78 are fixedly connected with pull rods 79, and the top ends of the two pull rods 79 extend out of the top ends of the two rectangular blocks 77 respectively. The top ends of the two pull rods 79 are fixedly connected with operating plates 710, and the outer walls of the tops of the two pull rods 79 are fixedly connected with limiting rings 712, and the two limiting rings 712 are respectively located above the two rectangular blocks 77, and the outsides of the bottom ends of the two pull rods 79 are movably sleeved with first springs 711, and the bottom ends of the two first springs 711 are fixedly connected to the top ends of the two pistons 83 respectively, and the top ends of the two first springs 711 are fixedly connected to the top ends of the inner cavities of the two rectangular blocks 77 respectively.

[0035] By providing the pull rod 79 , the fixing block 78 can be lifted up conveniently, thereby unfolding the supporting leg 2 .

[0036] like Figure 4 As shown, the fixing structure 8 includes a suction cup 81 , and the top end of the suction cup 81 is fixedly connected to the rear portion of the bottom end of the base 1 .

[0037] By providing the suction cup 81 , the base 1 can be fixed to a supporting surface such as the ground, thereby ensuring the working stability of the portable pendulum friction coefficient tester.

[0038] like Figure 5 As shown, a cavity 82 is provided inside the base 1 , the top end of the suction cup 81 extends into the cavity 82 , and a piston 83 is slidably connected to the inside of the cavity 82 .

[0039] By providing the piston 83 , air can be evacuated from the inside of the suction cup 81 , thereby ensuring the fixing effect of the suction cup 81 .

[0040] like Figure 5 As shown, the top end of the piston 83 is fixedly connected to a ramp block 84, the top end of the ramp block 84 is slidably connected to a round rod 89, the outer portion of the round rod 89 is movably sleeved with a second spring 810, the rear portion of the base 1 is threadedly connected to a threaded rod 87, the rear end of the threaded rod 87 is fixedly connected to a handle 88, the front end of the threaded rod 87 is fixedly connected to a top frame 86, the opposite surface of the front portion of the top frame 86 is rotatably connected to a round roller 85, and the outer wall of the round roller 85 overlaps the rear end of the ramp block 84.

[0041] By providing the round roller 85 , the inclined surface block 84 can be lifted up, thereby allowing the piston 83 to slide upward, and the second spring 810 can push the piston 83 downward, thereby assisting its reset.

[0042] Working principle of the utility model: when in use, first swing the pendulum 6, the bottom of the pendulum 6 contacts the detection surface to offset the kinetic energy of the pendulum 6, at this time, the friction coefficient of the detection surface can be quickly obtained through the pointer 5 and the dial 4, when the friction coefficient tester needs to be folded, the rectangular rod 73 is pulled back by the electric telescopic rod 72, so that the two racks 74 slide backward, so that the two gears 75 rotate, and then the bracket 3 rotates backward, when the bracket 3 rotates to fit the top of the base 1, lift the pull rod 79 upward, and rotate the support leg 2, when the support leg 2 rotates to fit the side of the base 1 When the friction coefficient tester needs to be placed stably, the base 1 is pressed first. At this time, the base 1 is fixed to the placement surface under the action of the suction cup 81, and the threaded rod 87 is rotated to squeeze the round roller 85 toward the inclined plane block 84, so that the inclined plane block 84 slides up, and then the piston 83 slides up, thereby forming a negative pressure at the suction cup 81, thereby improving the fixing effect of the suction cup 81.

[0043] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A portable pendulum friction coefficient tester, comprising a base (1), characterized in that: A folding structure (7) is fixedly mounted on the front end of the base (1); the top of the folding structure (7) is rotatably connected to a bracket (3); the left and right parts of the folding structure (7) are rotatably connected to support legs (2); the front end of the top of the bracket (3) is fixedly connected to a dial (4); the front end of the dial (4) is rotatably connected to a pointer (5); the front end of the pointer (5) is fixedly mounted to a pendulum (6); and the bottom of the base (1) is fixedly mounted to a fixed structure (8).

2. A portable pendulum friction coefficient tester according to claim 1, characterized in that: The folding structure (7) comprises a frame (71), the rear end of the middle part of the frame (71) is fixedly connected to the front end of the base (1), the top of the frame (71) is rotatably connected to the bottom of the bracket (3), the front end of the rear top of the frame (71) is fixedly mounted with an electric telescopic rod (72), the output end of the electric telescopic rod (72) is fixedly connected to a rectangular rod (73), the left and right positions of the front end of the rectangular rod (73) are fixedly connected to racks (74), the left and right ends of the bottom of the bracket (3) extend out of the left and right sides of the top of the frame (71) respectively, the left and right ends of the bottom of the bracket (3) are fixedly connected to gears (75), and the outer walls of the two gears (75) are respectively meshed with the tops of the two racks (74).

3. A portable pendulum friction coefficient tester according to claim 2, characterized in that: An elastic band (76) is fixedly connected to the positions where the front ends of the two supporting legs (2) are close to each other, and the elastic band (76) is located in front of the frame (71).

4. A portable pendulum friction coefficient tester according to claim 2, characterized in that: Rectangular blocks (77) are fixedly connected to the left and right positions of the rear part of the frame (71), and fixed blocks (78) are slidably connected inside the two rectangular blocks (77), and the outer walls of the two fixed blocks (78) are respectively plugged into the middle parts of the top ends of the two supporting legs (2).

5. A portable pendulum friction coefficient tester according to claim 4, characterized in that: The top ends of the two fixed blocks (78) are fixedly connected with pull rods (79), and the top ends of the two pull rods (79) respectively extend out of the top ends of the two rectangular blocks (77). The top ends of the two pull rods (79) are fixedly connected with operating plates (710). The outer walls of the tops of the two pull rods (79) are fixedly connected with limiting rings (712), and the two limiting rings (712) are respectively located above the two rectangular blocks (77). The outsides of the bottom ends of the two pull rods (79) are movably sleeved with first springs (711), and the bottom ends of the two first springs (711) are respectively fixedly connected to the top ends of the two pistons (83), and the top ends of the two first springs (711) are respectively fixedly connected to the top ends of the inner cavities of the two rectangular blocks (77).

6. A portable pendulum friction coefficient tester according to claim 1, characterized in that: The fixing structure (8) comprises a suction cup (81), the top end of the suction cup (81) being fixedly connected to the rear portion of the bottom end of the base (1).

7. A portable pendulum friction coefficient tester according to claim 6, characterized in that: A cavity (82) is provided inside the base (1), the top end of the suction cup (81) extends into the cavity (82), and a piston (83) is slidably connected to the inside of the cavity (82).

8. A portable pendulum friction coefficient tester according to claim 7, characterized in that: The top end of the piston (83) is fixedly connected to a ramp block (84), the top end of the ramp block (84) is slidably connected to a round rod (89), the outer portion of the round rod (89) is movably sleeved with a second spring (810), the rear portion of the base (1) is threadedly connected to a threaded rod (87), the rear end of the threaded rod (87) is fixedly connected to a handle (88), the front end of the threaded rod (87) is fixedly connected to a top frame (86), the opposite surface of the front portion of the top frame (86) is rotatably connected to a round roller (85), the outer wall of the round roller (85) overlaps the rear end of the ramp block (84).

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