Chain tightness measuring tool

Abstract

The utility model discloses a chain tightness measuring tool, which relates to the technical field of measuring tools and comprises a supporting seat, a tightness measuring component is fixedly mounted in the middle of the upper end of a moving table, and a chain limiting and accommodating component is fixedly mounted at the top of the tightness measuring component. According to the chain tightness measuring tool provided by the utility model, the tightness of the chain can be accurately measured through the tightness measuring assembly. The structure is high in precision, movement of the adjusting plate is controlled by the rotating rod, the upward jacking force of the top plate is easily controlled, and practicability is high. The position of the chain can be limited through the chain limiting and containing assembly, when the adjusting plate moves upwards to a certain position, the two limiting plates move oppositely, the two limiting plates drive the two containing plates to be away from each other, and after the two limiting plates are loosened, the corresponding tension springs can release elastic potential energy and drive the two containing plates to be close to each other; and one part of the chain is limited between the two parts. The applicability is high, and chains of different specifications can also be adapted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of measuring tool, especially a chain tightness measuring tool. BACKGROUND

[0002] Chain is generally a metal link or ring, and is often used for mechanical transmission and traction. Chain-shaped objects used to obstruct traffic passages (such as in streets, river or harbor entrances) and chains used for mechanical transmission. The abnormal state of the chain can affect the machine, so the machine will be checked for the tightness of the chain during debugging to ensure the reliability of the machine.

[0003] Chinese patent document CN218411669U discloses a chain tightness measuring tool, which comprises a base fixedly installed on a carrier, a measuring slider installed on the base and capable of being displaced upward and downward, and a force is applied to the measuring slider to press against the chain, an elastic element arranged between the base and the measuring slider and capable of being elastically supported upward and downward, and a tightness determination mark arranged on one of the base and the measuring slider and capable of indicating the relative displacement between the base and the measuring slider. Through the structure design of the lifting mechanism and the tightness measuring device, the chain tightness measuring tool can be moved to any position where the chain tightness needs to be measured.

[0004] The existing technology has the following problems:

[0005] When the above measuring tool uses the slider segment to lift the chain upward, the two fixed bolts need to be rotated and unscrewed from the slider segment, and the body part needs to be manually moved upward. Manual operation not only requires appropriate force, but also has errors, and the measurement accuracy is not accurate enough. Secondly, when the above measuring tool lifts the chain upward, part of the chain is located on the outer surface of the arc top edge, the area of the arc top edge is fixed, and it cannot cope with different specifications of the chain, and manual assistance is required during the gradual tensioning process of the chain, otherwise the chain is easy to separate from the arc top edge, and the practicality is general. INVENTION CONTENTS

[0006] The utility model provides a chain tightness measuring tool to solve the problems in the above background technology.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A chain tightness measuring tool, comprising a support seat, a lifting assembly fixedly installed on the front and rear parts of the upper end of the support seat, a moving table fixedly installed on the top of the lifting assembly, a tightness measuring assembly fixedly installed on the upper end of the moving table, and a chain limiting and accommodating assembly fixedly installed on the top of the tightness measuring assembly.

[0009] The tightness measuring assembly comprises a rectangular mounting sleeve, the lower end of the mounting sleeve is fixedly installed at the middle of the upper end of the mobile table, the left and right parts of the inner wall of the mounting sleeve are fixedly installed with sliding rails, the bottoms of the two sliding rails are closed structures, the opposite sides of the two sliding rails are slidingly connected with adjusting plates, the middle position of the bottom of the inner wall of the mounting sleeve is rotationally connected with a screw rod, the lower end of the adjusting plate is provided with a cylindrical threaded groove matched with the screw rod, and the bottom of the outer wall of the screw rod is movably connected with a rotating mechanism.

[0010] The chain limiting and containing assembly comprises a semicircular top plate, the lower end of the top plate is fixedly connected with the upper end of the adjusting plate, the middle part of the outer wall of the top plate is provided with a containing groove, the left and right positions of the bottom of the top plate are fixedly installed with sliding rods, the front and rear parts of the outer walls of the two sliding rods are slidingly connected with limiting plates, and the bottoms of the opposite sides of the two limiting plates are fixedly installed with arc containing plates.

[0011] Preferably, the lifting assembly comprises a reverse double-thread rod and four moving blocks, the left and right parts of the outer wall of the reverse double-thread rod are rotationally connected with the left and right positions of the rear part of the upper end of the supporting seat, the left end of the reverse double-thread rod is fixedly installed with a rotating wheel, the front part of the upper end of the supporting seat is fixedly installed with a limiting rod, the inner walls of the two moving blocks located at the front part are slidingly connected with the left and right parts of the outer wall of the limiting rod, and the inner walls of the two moving blocks located at the rear part are threadedly connected with the left and right parts of the outer wall of the reverse double-thread rod.

[0012] Preferably, the upper ends of the four moving blocks are rotationally connected with rotating rods, four adjacent rotating rods are symmetrically arranged, and the ends, away from the supporting seat, of the four rotating rods are rotationally connected with the front and rear positions of the left and right parts of the lower end of the mobile table.

[0013] Preferably, the left and right parts of the upper end of the supporting seat are fixedly installed with guide columns, and the inner walls of the left and right parts of the upper end of the mobile table are slidingly connected with the outer walls of the two guide columns.

[0014] Preferably, the rotating mechanism comprises a conical gear one, the inner wall of the conical gear one is fixedly connected with the bottom of the outer wall of the screw rod, the front part of the upper end of the mobile table is rotationally connected with a rotating rod penetrating through the front part of the mounting sleeve, the rear part of the outer wall of the rotating rod is fixedly sleeved with a conical gear two, and the outer surface of the conical gear two is engaged with the outer surface of the conical gear one.

[0015] Preferably, the middle position of the top part of the front side of the mounting sleeve is fixedly installed with a reading plate with scales, the left position of the bottom of the front side of the adjusting plate is fixedly installed with an index rod, the index rod is located in front of the reading plate, and the front side of the left part of the mounting sleeve is provided with a moving groove matched with the index rod.

[0016] Preferably, the outer wall of the two sliding rods is movably sleeved with a tension spring at the front and rear parts, the opposite ends of four adjacent tension springs are fixedly connected with the left and right parts of the sides away from each other of the two limiting plates, and the ends away from each other of the four adjacent tension springs are fixedly connected with the outer wall of the two sliding rods at the front and rear parts.

[0017] Due to the adoption of the above technical scheme, the present application has the following technical progress compared with the prior art:

[0018] 1. The chain tightness gauge comprises a mounting sleeve, sliding rails, an adjusting plate, a screw rod, a rotating mechanism, a reading plate and an index rod, and the tightness of the chain can be accurately measured through cooperation between the mounting sleeve, the sliding rails, the adjusting plate, the screw rod, the rotating mechanism, the reading plate and the index rod.

[0019] 2. The chain tightness gauge comprises a top plate, sliding rods, limiting plates, containing plates and tension springs, and the position of the chain can be limited through cooperation between the top plate, the sliding rods, the limiting plates, the containing plates and the tension springs, so that the chain is prevented from deviating when the top plate moves upward. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall front view structure of the present application.

[0021] Figure 2 It is a schematic diagram of the overall bottom view structure of the present application.

[0022] Figure 3 It is a schematic diagram of the overall explosion structure of the present application.

[0023] Figure 4 It is a schematic diagram of the A part of the present application.

[0024] Figure 5The utility model discloses a tension measuring assembly structure schematic drawing.

[0025] Figure 6 The utility model discloses a chain limiting containing assembly structure schematic drawing.

[0026] In the drawing: 1, support seat, 2, tension measuring assembly, 3, chain limiting containing assembly, 4, lifting assembly, 5, moving platform, 21, mounting sleeve, 22, slide rail, 23, adjusting plate, 24, screw rod, 25, cylindrical screw groove, 26, rotating mechanism, 27, reading board, 28, index rod, 261, bevel gear one, 262, rotating rod, 263, bevel gear two, 31, top plate, 32, containing groove, 33, slide rod, 34, limiting plate, 35, containing plate, 36, tension spring, 41, reverse double screw rod, 42, limiting rod, 43, moving block, 44, rotating rod, 45, guide column. DETAILED DESCRIPTION

[0027] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0028] As Figures 1-6 Shown, a chain tension gauge, including support seat 1, the upper end front and rear of support seat 1 is fixedly installed with lifting assembly 4, the top of lifting assembly 4 is fixedly installed with moving platform 5, and the upper end middle part of moving platform 5 is fixedly installed with tension measuring assembly 2, and the top of tension measuring assembly 2 is fixedly installed with chain limiting containing assembly 3.

[0029] Tension measuring assembly 2 includes rectangular mounting sleeve 21, and the lower end of mounting sleeve 21 is fixedly installed with the upper end middle part of moving platform 5, and the inner wall left and right of mounting sleeve 21 is fixedly installed with slide rail 22, and the bottom of two slide rails 22 is closed structure, and the opposite side of two slide rails 22 is slidably connected with adjusting plate 23, and the middle position of the bottom of mounting sleeve 21 inner wall is rotatably connected with screw rod 24, and the lower end middle part of adjusting plate 23 is provided with cylindrical screw groove 25 matched with screw rod, and the outer wall bottom of screw rod 24 is movably connected with rotating mechanism 26.

[0030] Chain limiting containing assembly 3 includes semicircular top plate 31, and the lower end of top plate 31 is fixedly connected with the upper end of adjusting plate 23, and the outer wall middle part of top plate 31 is provided with containing groove 32, and the left and right positions of the bottom of top plate 31 are fixedly installed with slide rod 33, and the outer wall front and rear of two slide rods 33 are slidably connected with limiting plate 34, and the bottom of the opposite side of two limiting plates 34 is fixedly installed with arc containing plate 35.

[0031] The tightness of the chain can be accurately measured by the tightness measuring assembly 2. In actual operation, first rotate the rotating rod 262, which drives the conical gear two 263 to rotate. The conical gear one 261 drives the screw rod 24 to rotate by meshing with the conical gear two 263. The adjusting plate 23 moves up by being threadedly connected with the screw rod 24. The inner wall bottom of the two slide rails 22 is used to support the adjusting plate 23, so that the value of each upward movement is accurate enough. When the adjusting plate 23 moves, the index rod 28 moves in front of the reading plate 27. The operator rotates the rotating rod 262 according to the tension of the chain on the top plate 31. When the chain is tensioned enough, stop rotating the rotating rod 262. According to the reading of the index rod 28, the tightness of the chain can be calculated. This structure has high precision. The movement of the adjusting plate 23 is controlled by the rotating rod 262, which can easily control the force of the top plate 31 being lifted upward, and has strong practicality. The chain position limiting and containing assembly 3 can limit the position of the chain to avoid the chain from deviating when the top plate 31 moves upward. When the adjusting plate 23 moves to a certain position, the two limiting plates 34 are moved oppositely, which drives the two containing plates 35 to move away from each other. At this time, the corresponding tension springs 36 are all extruded and accumulate elastic potential energy. When the two limiting plates 34 are released, the corresponding tension springs 36 release the elastic potential energy and drive the two containing plates 35 to move closer to each other, and part of the chain is limited between the two containing plates. When the top plate 31 continues to move upward, it is not necessary to manually adjust the position of the chain, which has strong applicability and can also cope with chains of different specifications.

[0032] As shown in Figure 3 , the lifting assembly 4 includes a reverse double-thread rod 41 and four moving blocks 43. The left and right parts of the outer wall of the reverse double-thread rod 41 are rotationally connected with the left and right positions of the rear part of the upper end of the support seat 1. A rotating wheel is fixedly installed on the left end of the reverse double-thread rod 41. A limiting rod 42 is fixedly installed on the front part of the upper end of the support seat 1. The inner walls of the front two moving blocks 43 are slidably connected with the left and right parts of the outer wall of the limiting rod 42. The inner walls of the rear two moving blocks 43 are threadedly connected with the left and right parts of the outer wall of the reverse double-thread rod 41.

[0033] The reverse double-thread rod 41 can be rotated by the rotating wheel. The rear two moving blocks 43 move relatively by being threadedly connected with the reverse double-thread rod 41. The limiting rod 42 limits the movement of the front two moving blocks 43.

[0034] As shown in Figure 3 , the upper end of each of the four moving blocks 43 is rotationally connected with a rotating rod 44. The four adjacent rotating rods 44 are symmetrically arranged. The ends of the four rotating rods 44 away from the support seat 1 are rotationally connected with the front and rear positions of the left and right parts of the lower end of the moving table 5.

[0035] The four moving blocks 43 rotate when they move, and the four rotating rods 44 drive the moving table 5 to move up and down.

[0036] AsFigure 3 As shown, the upper ends of the support seat 1 are fixedly installed with guide columns 45, and the inner walls of the upper ends of the moving table 5 are slidably connected with the outer walls of the two guide columns 45.

[0037] The two guide columns 45 limit the movement of the moving table 5.

[0038] As shown in Figure 4 and Figure 5 The rotating mechanism 26 includes a conical gear one 261, the inner wall of which is fixedly connected with the bottom of the outer wall of the screw rod 24, and the upper end of the moving table 5 is rotatably connected with a rotating rod 262 penetrating through the front of the mounting sleeve 21, the outer wall of the rear of the rotating rod 262 is fixedly sleeved with a conical gear two 263, and the outer surface of the conical gear two 263 is engaged with the outer surface of the conical gear one 261.

[0039] The rotating rod 262 drives the conical gear two 263 to rotate, the conical gear one 261 drives the screw rod 24 to rotate through engagement with the conical gear two 263, and the adjusting plate 23 moves up and down through threaded connection with the screw rod 24.

[0040] As shown in Figure 4 The front side of the mounting sleeve 21 is fixedly installed with a reading plate 27 with scales at the middle position of the top, and an index rod 28 is fixedly installed at the left position of the bottom of the front side of the adjusting plate 23, the index rod 28 is located in front of the reading plate 27, and the front side of the left part of the mounting sleeve 21 is provided with a moving slot matched with the index rod 28.

[0041] When the adjusting plate 23 moves up and down, the position of the index rod 28 on the reading plate 27 will also change accordingly, and by reading the corresponding scales of the index rod 28, the tightness of the chain can be obtained.

[0042] As shown in Figure 6 The outer walls of the front and rear parts of the two sliding rods 33 are movably sleeved with tension springs 36, the opposite ends of four adjacent tension springs 36 are fixedly connected with the left and right parts of the sides away from each other of the two limiting plates 34, and the ends away from each other of the four adjacent tension springs 36 are fixedly connected with the outer walls of the front and rear parts of the two sliding rods 33.

[0043] When the chain is placed between the containing plate 35 and the containing groove 32, the tension springs 36 exert an inward pulling force, causing the limiting plates 34 to tightly clamp the chain. This stable clamping force ensures that the chain does not move or slide during the measurement process, thereby improving the accuracy of the measurement. Since the width of the chain may vary, the elastic design of the tension springs 36 allows the limiting plates 34 to slide on the sliding rods 33 to accommodate chains of different widths.

[0044] The working principle of the utility model discloses: the measuring tool body is placed directly below the chain, according to the height of the chain, the reverse double screw rod 41 is rotated, the two moving blocks 43 in the rear part are relatively moved through the screw connection with the reverse double screw rod 41, four moving blocks 43 are synchronously moved due to the connecting effect of the moving table 5, when the four moving blocks 43 move, the corresponding rotating rod 44 is rotated, the four rotating rods 44 drive the moving table 5 to move up and down, until the moving table 5 drives the top plate 31 to be close to the chain. Then, the two limiting plates 34 are moved towards, the two containing plates 35 are driven to move away from each other, at this time, the corresponding tension springs 36 are all extruded to accumulate elastic potential energy, the two limiting plates 34 are loosened, the corresponding tension springs 36 release the elastic potential energy and drive the two containing plates 35 to move close to each other, and part of the chain is limited between the two. When the top plate 31 moves up through the adjusting plate 23, manual auxiliary adjustment of the chain position is not needed, the applicability is strong, and different specifications of chains can also be coped with.

[0045] The rotating rod 262 is rotated, the conical gear two 263 is rotated by the rotating rod 262, the conical gear one 261 is rotated by the conical gear two 263, the adjusting plate 23 is moved up by the screw rod 24, the inner wall bottom of the two slide rails 22 is used for supporting the adjusting plate 23, so that the value of each time of the adjusting plate 23 is moved up is accurate enough. When the adjusting plate 23 moves, the index rod 28 moves in front of the reading plate 27, the operator rotates the rotating rod 262 according to the tension degree of the chain on the top plate 31, when the chain is tensioned enough, the rotating rod 262 is stopped, and the tension degree of the chain can be calculated according to the reading of the index rod 28. The structure is high in precision, the movement of the adjusting plate 23 is controlled by the rotating rod 262, the degree of the top plate 31 being lifted up is easy to control, and the practicability is strong.

[0046] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall into the scope of the utility model claimed for protection. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A chain tightness gauge comprising a support seat (1), characterized in that: The upper end of the support seat (1) is fixedly installed with a lifting assembly (4), the top of the lifting assembly (4) is fixedly installed with a moving table (5), the upper end of the moving table (5) is fixedly installed with a tightness measuring assembly (2), and the top of the tightness measuring assembly (2) is fixedly installed with a chain limiting and containing assembly (3). The tightness measuring assembly (2) comprises a rectangular mounting sleeve (21), the lower end of the mounting sleeve (21) is fixedly installed with the upper end of the moving table (5), the left and right parts of the inner wall of the mounting sleeve (21) are fixedly installed with sliding rails (22), the bottoms of the two sliding rails (22) are in a closed structure, the opposite sides of the two sliding rails (22) are slidably connected with adjusting plates (23), the middle position of the bottom of the inner wall of the mounting sleeve (21) is rotatably connected with a screw rod (24), the lower end of the adjusting plate (23) is provided with a cylindrical threaded groove (25) matched with the screw rod, and the bottom of the outer wall of the screw rod (24) is movably connected with a rotating mechanism (26). The chain limiting and containing assembly (3) comprises a semicircular top plate (31), the lower end of the top plate (31) is fixedly connected with the upper end of the adjusting plate (23), the middle part of the outer wall of the top plate (31) is provided with a containing groove (32), the left and right positions of the bottom of the top plate (31) are fixedly installed with sliding rods (33), the front and rear parts of the outer walls of the two sliding rods (33) are slidably connected with limiting plates (34), and the bottoms of the opposite sides of the two limiting plates (34) are fixedly installed with arc-shaped containing plates (35).

2. A chain tension gauge according to claim 1, wherein: The lifting assembly (4) comprises a reverse double-thread rod (41) and four moving blocks (43), the left and right parts of the outer wall of the reverse double-thread rod (41) are rotatably connected with the left and right positions of the rear part of the upper end of the support seat (1), the left end of the reverse double-thread rod (41) is fixedly installed with a rotating wheel, the front part of the upper end of the support seat (1) is fixedly installed with a limiting rod (42), the inner walls of the two moving blocks (43) located at the front part are slidably connected with the left and right parts of the outer wall of the limiting rod (42), and the inner walls of the two moving blocks (43) located at the rear part are threadedly connected with the left and right parts of the outer wall of the reverse double-thread rod (41).

3. A chain tension gauge according to claim 2, wherein: The upper ends of the four moving blocks (43) are rotatably connected with rotating rods (44), the four adjacent rotating rods (44) are symmetrically arranged, and the ends, away from the support seat (1), of the four rotating rods (44) are rotatably connected with the front and rear positions of the left and right parts of the lower end of the moving table (5).

4. A chain tension gauge according to claim 3, wherein: The left and right parts of the upper end of the support seat (1) are fixedly installed with guide columns (45), and the inner walls of the left and right parts of the upper end of the moving table (5) are slidably connected with the outer walls of the two guide columns (45).

5. A chain tension gauge as claimed in claim 1, wherein: The rotating mechanism (26) comprises a conical gear one (261), the inner wall of the conical gear one (261) is fixedly connected with the bottom of the outer wall of the screw rod (24), the upper end of the moving table (5) is rotatably connected with a rotating rod (262) penetrating through the front part of the mounting sleeve (21), the outer wall of the rotating rod (262) is fixedly sleeved with a conical gear two (263), and the outer surface of the conical gear two (263) is engaged with the outer surface of the conical gear one (261).

6. A chain tension gauge as claimed in claim 1, wherein: The middle position of the top of the front side of the mounting sleeve (21) is fixedly provided with a reading plate (27) with scales, the left position of the bottom of the front side of the adjusting plate (23) is fixedly provided with an index rod (28), the index rod (28) is located in front of the reading plate (27), and the front side of the left part of the mounting sleeve (21) is provided with a moving groove matched with the index rod (28).

7. A chain tension gauge as claimed in claim 1, wherein: The outer walls of the two slide rods (33) are movably sleeved with tension springs (36) on the front and rear parts, the opposite ends of the four adjacent tension springs (36) are fixedly connected with the left and right parts of the sides away from each other of the two limiting plates (34), and the ends away from each other of the four adjacent tension springs (36) are fixedly connected with the outer walls of the front and rear parts of the two slide rods (33).

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