Tensioning device for testing chain of road roller

Abstract

The utility model discloses a tensioning device for testing a chain of a road roller, and belongs to the technical field of chain testing. The device mainly comprises a test board; the tensioning assembly is provided with a supporting frame and a fixing frame which are suitable for installation; the first chain wheel assembly is arranged on the tensioning assembly and comprises a motor, and the motor is installed on one side of the supporting frame; the first screw rods are rotationally mounted on the supporting frame and the fixing frame, and one end of one first screw rod is connected with the output end of the motor; and the driving chain wheels are arranged on the first screw rods in a sliding and sleeving mode, nuts are arranged on the two sides of the driving chain wheels, and the nuts are installed on the first screw rods in a threaded mode. According to the tensioning device for testing the chain of the road roller, through the arrangement of the first chain wheel assembly, when the transmission efficiency of the chain is tested, a proper chain wheel can be selected for sleeving according to the actual situation, so that the flexibility during testing is improved, and the effect of being suitable for chains of different specifications is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of chain testing, in particular to a tensioning device for road roller chain testing. BACKGROUND

[0002] A road roller is a commonly used road construction machine, which is also widely used for filling and compaction work of large engineering projects such as high-grade highways, railways, airport runways, dams and stadiums. In the transmission system of the road roller, the road roller chain is an important component of the transmission system, which can transmit the power generated by the engine to various working parts such as hydraulic pumps and hydraulic motors, so as to drive the road roller to perform compaction work.

[0003] After the chain is manufactured, it usually needs to be tested. In the testing process, the chain needs to be tensioned to ensure its stability.

[0004] For example, the patent with the publication number CN221198944U specifically discloses a chain positioning and tensioning device. The device sets the chain on the driven sprocket and the driving sprocket, then moves the bracket, drives the extension rod to extend, so that the chain is in a tensioned state, and the extension rod is fixed by the fixing assembly. Then the motor drives the chain to rotate, and the chain is detected by the detection compression module.

[0005] However, in the above-mentioned patent, only a set of driven sprocket and driving sprocket are connected with the chain. The pitch of the driven sprocket and the driving sprocket is fixed, which limits the application range of the chain and may not be suitable for other specifications and types of chains.

[0006] Therefore, it is necessary to provide a tensioning device for road roller chain testing to solve the above problems.

[0007] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the concept of the present application, and therefore, it can contain information that does not constitute prior art. SUMMARY

[0008] Based on the above problems existing in the prior art, the present application solves the problem of providing a tensioning device for road roller chain testing, which can be applied to different specifications of chains.

[0009] The technical scheme adopted by the application to solve the technical problems is: a tensioning device for road roller chain testing, comprising a test table; a tensioning assembly is arranged on the test table, and the tensioning assembly has a support frame and a fixing frame suitable for installation; a first sprocket assembly is arranged on the tensioning assembly, and the first sprocket assembly comprises: a motor, the motor is installed on one side of the support frame; two groups of first screws are rotatably installed on the support frame and the fixing frame, and one end of one group of the first screws is connected with the output end of the motor; at least two groups of driving sprockets are slidably sleeved on the first screws, and the driving sprockets are provided with nuts on both sides, and the nuts are threadedly installed on the first screws.

[0010] Further, the tensioning assembly comprises a self-propelled sliding rail installed on the test table, and the output end of the self-propelled sliding rail is installed with a bottom plate.

[0011] Further, a lead screw is rotatably installed on the bottom plate, a support frame is threadedly installed on the lead screw, a knob is arranged on the top of the lead screw, two groups of vertical rods are installed on the bottom plate, the support frame is arranged through the vertical rods, and a limiting block is installed on the top of the vertical rod.

[0012] Further, the fixing frame and the support frame are each installed with a mounting block, hooks are arranged on the two groups of mounting blocks, and the hooks have hook grooves.

[0013] Further, a pad is arranged on the two groups of hooks, a fixing rod is installed on the pad, and a lock catch is rotatably installed on the fixing rod.

[0014] Further, a torsion spring is arranged between the fixing rod and the lock catch, and the torsion spring is sleeved outside the fixing rod.

[0015] The application has the following beneficial effects: the tensioning device for road roller chain testing provided by the application can select appropriate sprockets for sleeving according to actual conditions to improve flexibility during testing, and can be applicable to different specifications of chains.

[0016] In addition to the purposes, features and advantages described above, the application has other purposes, features and advantages. The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the application form a part of the specification and serve to further illustrate the application, its exemplary embodiments and its description, and do not constitute an improper limitation of the application.

[0018] In the drawings:

[0019] Figure 1 It is a whole schematic view of the tensioning device for road roller chain testing in the application.

[0020] Figure 2 For Figure 1 enlarged view at A in the middle;

[0021] Figure 3 For Figure 2 enlarged view at B in the middle;

[0022] In the drawings, various reference signs refer to:

[0023] 1, test bench;

[0024] 2, tensioning assembly; 21, self-propelled slide rail; 22, fixing frame; 23, bottom plate; 24, mounting block; 25, support frame; 26, vertical rod; 27, limiting block; 28, knob; 29, screw rod; 210, hook; 211, hook groove;

[0025] 3, first sprocket assembly; 31, driving sprocket; 32, first screw rod; 33, nut; 34, motor; 4, cushion block; 5, fixed rod; 6, lock catch. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0028] As Figures 1-2 shown, the present application provides a tensioning device for testing road roller chain, which comprises a test bench 1, and a tensioning assembly 2 is arranged on the test bench 1, and the tensioning assembly 2 is used to tension the chain;

[0029] The tensioning assembly 2 comprises a self-propelled slide rail 21 fixedly installed on the test bench 1, and a bottom plate 23 is fixedly installed at the output end of the self-propelled slide rail 21, so as to drive the bottom plate 23 to move on the self-propelled slide rail 21 under the driving of the self-propelled slide rail 21. It should be noted that the self-propelled slide rail 21 is a self-propelled mechanism mentioned in the patent with publication number CN221021066U, and the specific structure and principle will not be described in detail here.

[0030] Meanwhile, a screw rod 29 is rotatably installed on the bottom plate 23, and a supporting frame 25 is threadedly installed on the screw rod 29, the top of the screw rod 29 is provided with a knob 28, and two groups of vertical rods 26 are fixedly installed on the bottom plate 23, the supporting frame 25 penetrates through the vertical rods 26, so that rotating the knob 28 drives the screw rod 29 to rotate, and in turn drives the supporting frame 25 to move up and down on the axis of the screw rod 29, and under the action of the two groups of vertical rods 26, the moving direction is fixed, and a limiting block 27 is fixedly installed on the top of the vertical rod 26, so as to limit the moving range of the supporting frame 25;

[0031] Meanwhile, a fixed frame 22 is fixedly installed on one end of the test bench 1, and mounting blocks 24 are fixedly installed on one side of the fixed frame 22 and the supporting frame 25, and hooks 210 are arranged on the two groups of mounting blocks 24, the hooks 210 have hook grooves 211 suitable for hooking the chain, so as to hook the gap between the chains through the hook grooves 211;

[0032] When the bottom plate 23 moves, the hooks 210 connected with the supporting frame 25 are driven to move, and in turn the one end of the chain is tensioned, and after tensioning, the chain can continue to move, so as to test the tensile strength of the chain, it should be noted that the test chain is a single chain, that is, the two ends of the chain are not connected together;

[0033] As shown in Figure 3 The two groups of hooks 210 are provided with pad blocks 4, the pad blocks 4 are fixedly installed with fixed rods 5, and the fixed rods 5 are rotatably installed with lock buckles 6, the lock buckles 6 are located on one side of the opening of the hook grooves 211 of the hooks 210, so as to press the lock buckles 6 to rotate on the fixed rods 5, so as to approach or away from the opening of the hook grooves 211;

[0034] In the initial state, the lock buckle 6 abuts against the hook 210, and when the lock buckle 6 approaches the hook 210, the hook groove 211 is closed, so as to avoid the chain hooked on the hook 210 from falling out, and when the lock buckle 6 is away from the hook 210, the hooking is opened, so as to place the chain;

[0035] Meanwhile, a torsional spring (not shown in the figure) is arranged between the fixed rod 5 and the lock buckle 6, the torsional spring is sleeved outside the fixed rod 5, so as to tighten the torsional spring when the lock buckle 6 is pressed to move away from the hook 210, and the lock buckle 6 is reset under the action of the restoring force of the torsional spring, so as to close the hook groove 211;

[0036] Meanwhile, a first sprocket assembly 3 is arranged on the supporting frame 25, the first sprocket assembly 3 is used to select a chain suitable for the chain;

[0037] As shown in Figures 1-2As shown, the first sprocket assembly 3 comprises a first screw rod 32 rotatably mounted on the support frame 25, and a plurality of driving sprockets 31 are sleeved on the first screw rod 32, so as to sleeve the chain on the driving sprockets 31, and it should be noted that the diameters and pitches of each group of driving sprockets 31 are different to adapt to different specifications of the chain;

[0038] Meanwhile, a nut 33 is arranged on both sides of each group of driving sprockets 31, and the nut 33 is threadedly mounted on the first screw rod 32, so as to fix the driving sprockets 31 on the first screw rod 32 by rotating the nut 33 to abut against both sides of the driving sprockets 31, so as to set the number of the plurality of driving sprockets 31 and adjust the position of the driving sprockets 31 on the first screw rod 32 according to actual conditions;

[0039] And one end of one of the first screw rods 32 is connected with a motor 34, and the motor 34 is mounted on the other side of the support frame 25, so that the motor 34 drives the first screw rod 32 to rotate, and then drives the chain to rotate through the driving sprockets 31;

[0040] It should be noted that the fixed frame 22 is provided with a second sprocket assembly (not shown in the figure), which has a structure similar to that of the first sprocket assembly 3, and also has a second screw rod (not marked in the figure) that can rotate, and the second screw rod is provided with a plurality of driven sprockets (not shown in the figure) matched with the plurality of driving sprockets 31, so that the position of the driven sprockets on the first screw rod 32 can be adjusted according to actual conditions to cooperate with the corresponding driving sprockets 31 to connect with the chain, thereby changing the transmission ratio of the chain to test its transmission performance, that is, a plurality of driving sprockets 31 and driven sprockets with the same pitch but different diameters are arranged;

[0041] As described above, when the chain is tensioned, the tensioning mode can be selected according to the actual test conditions, such as testing the tensile strength, and the two ends of a single chain are respectively hung in the hook grooves 211 of the two groups of hooks 210, and are closed by the lock buckle 6, and then the self-propelled slide rail 21 drives the support frame 25 to move through the bottom plate 23, thereby tensioning one end of the chain by the hooks 210, and continuing to move after tensioning;

[0042] When testing the transmission efficiency, the chain can be sleeved on the two groups of driving sprockets 31, and the self-propelled slide rail 21 drives the driving sprockets 31 to move to tension one end of the chain, and then the motor 34 is started to drive the driving sprockets 31 to rotate through the first screw rod 32, thereby driving the chain to rotate, and when facing different specifications of the chain, the chain can be sleeved on the matching driving sprockets 31, and the nut 33 can be rotated to move away from the driving sprockets 31, thereby adjusting the position of the driving sprockets 31 to combine different diameters of the driving sprockets 31 to change the transmission ratio of the chain.

[0043] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tensioning device for road roller chain testing, characterized by: The utility model relates to a test bench, which comprises: a test bench (1); a tensioning assembly (2) arranged on the test bench (1), the tensioning assembly (2) having a support frame (25) and a fixing frame (22) adapted to be mounted; a first sprocket assembly (3) arranged on the tensioning assembly (2), the first sprocket assembly (3) comprising: a motor (34) mounted on one side of the support frame (25); two groups of first screw rods (32) rotatably mounted on the support frame (25) and the fixing frame (22), one end of one group of the first screw rods (32) being connected to an output end of the motor (34); at least two groups of driving sprockets (31) slidably sleeved on the first screw rods (32), the driving sprockets (31) being provided with nuts (33) on both sides, the nuts (33) being threadedly mounted on the first screw rods (32).

2. A tensioning device for road roller chain testing according to claim 1, characterised in that: The tensioning assembly (2) comprises a self-propelled sliding rail (21) mounted on the test bench (1), and an output end of the self-propelled sliding rail (21) is provided with a bottom plate (23).

3. A tensioning device for road roller chain testing according to claim 2, characterised in that: A lead screw (29) is rotatably mounted on the bottom plate (23), a support frame (25) is threadedly mounted on the lead screw (29), a knob (28) is arranged on a top of the lead screw (29), two groups of vertical rods (26) are mounted on the bottom plate (23), the support frame (25) is arranged through the vertical rods (26), and a limiting block (27) is mounted on a top of each vertical rod (26).

4. A tensioning device for road roller chain testing according to claim 1, characterized in that: The fixing frame (22) and one side of the support frame (25) are each provided with a mounting block (24), each of the two groups of mounting blocks (24) is provided with a hook (210), and the hook (210) has a hook groove (211).

5. A tensioning device for road roller chain testing according to claim 4, characterised in that: A cushion block (4) is arranged on each of the two groups of hooks (210), a fixing rod (5) is mounted on the cushion block (4), and a lock buckle (6) is rotatably mounted on the fixing rod (5).

6. A tensioning device for road roller chain testing according to claim 5, wherein: A torsion spring is arranged between the fixing rod (5) and the lock buckle (6), and the torsion spring is sleeved outside the fixing rod (5).

Images