Tension testing machine for lifting belt

Abstract

The utility model relates to the technical field of tension testing machines, and discloses a tension testing machine of a lifting belt, which comprises a vertical machine body, a workbench fixed on the vertical machine body, a lifting cross beam arranged right above the workbench and slidably arranged on the vertical machine body, and a tension testing head mounted at the bottom of the lifting cross beam, tool mechanisms are installed on a testing head of the tension testing head and the workbench, each tool mechanism comprises a tool frame and a force bearing shaft, the tool frame is in a U shape, the force bearing shaft is arranged in an opening of the tool frame and slidably arranged on the tool frame in a penetrating mode, the force bearing shaft is fixedly sleeved with a limiting ring, the force bearing shaft is movably sleeved with a moving ring, and the moving ring is arranged on the tool frame. The outer diameter of the limiting ring and the outer diameter of the movable ring are both larger than the diameter of the force bearing shaft. The lifting belt sleeves the force bearing shafts of the two tool mechanisms, and the limiting ring and the moving ring respectively act on two sides of the lifting belt, so that the lifting belt is prevented from moving on the force bearing shafts in the testing process, and the condition of belt separation in the testing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tension testing machines, in particular to a tension testing machine for a lifting belt. Background Art

[0002] Slings (synthetic fiber slings) are generally made of high-strength polyester filaments. They offer multiple advantages, including high strength, abrasion resistance, antioxidants, and UV resistance. They are also soft, non-conductive, and non-corrosive (harmless to the human body), making them widely used in various fields. After production, all types of slings require tensile testing to verify compliance with standards and to measure the ultimate strength (the force required to break) of the sling. Currently, tensile testing machines on the market are mostly used for testing metal parts. Testing is performed using a three-jaw chuck, which is used to hold the metal parts. However, slings are annular in shape and made of a soft material. The three-jaw chuck cannot properly hold the sling, resulting in the sling easily coming off during testing. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a lifting belt tension testing machine that is designed for lifting test pieces and prevents belts from falling off.

[0004] The purpose of the utility model is achieved through the following technical solutions: a tensile testing machine for a lifting belt, comprising a vertical body, a workbench fixed on the vertical body, a lifting beam arranged directly above the workbench, the lifting beam slidably arranged on the vertical body, a tensile testing head installed at the bottom of the lifting beam, a tooling mechanism installed on the test head of the tensile testing head and on the workbench, the tooling mechanism comprising a tooling frame and a load-bearing shaft, the tooling frame is in the shape of a U-shaped character, the load-bearing shaft is arranged in the opening of the tooling frame, the load-bearing shaft is slidably passed through the tooling frame, a limiting ring is provided on the fixed sleeve of the load-bearing shaft, a moving ring is provided on the movable sleeve of the load-bearing shaft, the outer diameter of the limiting ring and the outer diameter of the moving ring are both larger than the diameter of the load-bearing shaft.

[0005] Furthermore, a through hole is provided at one end of the tooling frame opening, and a limiting groove is provided on the inner wall of the other end, and one end of the load-bearing shaft is movable through the through hole and adapted in the limiting groove.

[0006] Furthermore, a reset disk is fixed to one end of the load-bearing shaft away from the limit groove, and the reset disk is located on the outside of the tooling frame. A spring is sleeved on the load-bearing shaft, and the two ends of the spring are respectively connected to the tooling frame and the reset disk. When the spring is in normal state, one end of the load-bearing shaft is adapted to be in the limit groove.

[0007] Furthermore, a first limiting hole is provided on the top of the tooling frame, the first limiting hole is connected to the limiting groove, and a second limiting hole is provided on the side wall of the load-bearing shaft. When the load-bearing shaft is adapted to the limiting groove, the first limiting hole coaxially corresponds to the second limiting hole, and the pin is inserted into the first limiting hole and the second limiting hole at the same time.

[0008] Furthermore, the load-bearing shaft is provided with an external thread, and the movable ring is threadedly sleeved on the load-bearing shaft.

[0009] Furthermore, the tooling mechanism also includes a mounting column and a plug-in column, the mounting column is fixed on the workbench, a plug-in hole is provided on the top of the mounting column, the plug-in column is fixed on the bottom of the tooling frame, and the plug-in column is adapted to be in the plug-in hole.

[0010] Furthermore, a threaded hole is provided on the side wall of the plug-in column, and an insertion hole is provided through the side wall of the installation column, and a screw rod passes through the insertion hole and is fitted into the threaded hole.

[0011] Furthermore, a flange is fixed to one end of the mounting column away from the tooling frame, and the flange is connected to the workbench by bolts.

[0012] The beneficial effects of the utility model are:

[0013] The lifting belt is put on the bearing shaft of the two tooling mechanisms. The limit ring and the movable ring act on both sides of the lifting belt respectively to limit the lifting belt and prevent it from moving on the bearing shaft during the test. It can well limit the tooling of the lifting belt and ensure that the belt will not fall off during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a tensile testing machine for a lifting belt according to the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of a tooling mechanism in a tensile testing machine for a lifting belt according to the present invention;

[0016] In the figure, 1-vertical body, 2-workbench, 3-lifting beam, 4-tensile test head, 5-tool frame, 6-load-bearing shaft, 7-limiting ring, 8-moving ring, 9-through hole, 10-limiting groove, 11-reset plate, 12-spring, 13-first limiting hole, 14-second limiting hole, 15-pin, 16-connecting column, 17-connecting hole, 18-threaded hole, 19-jack, 20-screw. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0018] like Figure 1 and Figure 2 As shown, a tensile testing machine for a lifting belt comprises a vertical body 1, a workbench 2 is fixed on the vertical body 1, a lifting beam 3 is arranged just above the workbench 2, the lifting beam 3 is slidably arranged on the vertical body 1, a tensile testing head 4 is installed on the bottom of the lifting beam 3, a tooling mechanism is installed on the test head of the tensile testing head 4 and the workbench 2, the tooling mechanism comprises a tooling frame 5 and a load-bearing shaft 6, the tooling frame 5 is in the shape of a U-shaped character, the load-bearing shaft 6 is arranged in the opening of the tooling frame 5, the load-bearing shaft 6 is slidably passed through the tooling frame 5, a fixed sleeve is provided with a limiting ring 7 on the load-bearing shaft 6, a movable sleeve is provided with a moving ring 8 on the load-bearing shaft 6, the outer diameter of the limiting ring 7 and the outer diameter of the moving ring 8 are both larger than the diameter of the load-bearing shaft 6, the tooling structure of the tensile testing machine is improved, and other components remain unchanged, the changes are minor, and do not affect the vertical tensile testing When using the test machine, since the finished lifting belt is annular, a load-bearing shaft 6 is set to bear the tension of the lifting belt test. During the work, the load-bearing shaft 6 is moved, and an opening for the lifting belt to pass through is formed between the load-bearing shaft 6 and the work frame 5, so that the lifting belt is put on the load-bearing shaft 6, and the contact position of the lifting belt is located between the limit ring 7 and the moving ring 8. The position of the moving ring 8 is adjusted so that the moving ring 8 and the limit ring 7 are respectively in contact with both sides of the lifting belt to prevent the lifting belt from moving on the load-bearing shaft during the test. It can well limit the work of the lifting belt and ensure that the belt will not fall off during the test. Then, the lifting belt is put on another work mechanism in the same way to complete the work of the lifting belt, and the lifting beam 3 moves upward for tension testing. The method of tension testing belongs to the existing technology and will not be repeated here.

[0019] Furthermore, if Figure 1 and Figure 2 As shown, a through hole 9 is provided at one end of the tooling frame 5, and a limiting groove 10 is provided on the inner wall of the other end. One end of the load-bearing shaft 6 is movable through the through hole 9 and adapted to be in the limiting groove 10. A reset disk 11 is fixed to the end of the load-bearing shaft 6 away from the limiting groove 10. The reset disk 11 is located on the outside of the tooling frame 5. A spring 12 is sleeved on the load-bearing shaft 6. The two ends of the spring 12 are respectively connected to the tooling frame 5 and the reset disk 11. When the spring 12 is in normal state, one end of the load-bearing shaft 6 is adapted to be in the limiting groove 10. When the tooling lifting belt is lifted, it moves away from the tooling frame 5 to reset the tooling frame 5. The positioning disk 11 and the reset disk 11 drive the load-bearing shaft 6 to disengage from the limiting groove 10, so that an opening for the lifting belt to pass through is formed between the reset disk 11 and the tooling frame 5, and the lifting belt is placed between the limiting ring 7 and the movable ring 8. The reset disk 11 is loosened, and one end of the load-bearing shaft 6 is adapted to the limiting groove 10 under the reaction force of the spring 12 to limit the load-bearing shaft 6. Then the movable ring 8 is adjusted so that the movable ring 8 and the limiting ring 7 are respectively in contact with both sides of the lifting belt to prevent the lifting belt from shifting. The lifting belt is tooled on another tooling mechanism in the same way.

[0020] Furthermore, if Figure 2 As shown, a first limiting hole 13 is provided on the top of the tooling frame 5, and the first limiting hole 13 is connected to the limiting groove 10. A second limiting hole 14 is provided on the side wall of the load-bearing shaft 6. When the load-bearing shaft 6 is adapted to the limiting groove 10, the first limiting hole 13 coaxially corresponds to the second limiting hole 14, and the pin 15 is inserted into the first limiting hole 13 and the second limiting hole 14 at the same time. In order to strengthen the installation strength of the load-bearing shaft 6, the movement of the load-bearing shaft 6 is limited by the pin 15. After the lifting belt is put on the load-bearing shaft 6, the pin 15 is inserted into the first limiting hole 13 and the second limiting hole 14, thereby limiting the horizontal movement freedom of the load-bearing shaft 6, ensuring that the position of the load-bearing shaft 6 will not change during the test, and ensuring the stability of the test.

[0021] Furthermore, the load-bearing shaft 6 is provided with an external thread, and the movable ring 8 is threadedly mounted on the load-bearing shaft 6. The position of the movable ring 8 can be conveniently adjusted by the thread, and the position of the movable ring 8 can be locked by the thread, which is simple and quick to operate.

[0022] Furthermore, if Figure 2 As shown, taking the tooling mechanism on the workbench 2 as an example, the tooling mechanism also includes a mounting column and a plug-in column 16. The mounting column is fixed on the workbench 2. Similarly, the mounting column on the lifting beam is fixed on the lifting beam. A plug-in hole 17 is provided on the top of the mounting column. The plug-in column 16 is fixed to the bottom of the tooling frame 5. The plug-in column 16 is adapted to the plug-in hole 17. A threaded hole 18 is provided on the side wall of the plug-in column 16. A plug-in hole 19 is provided through the side wall of the mounting column. The screw 20 passes through the plug-in hole 19 and is adapted to the threaded hole 18. A flange is fixed on the end of the mounting column away from the tooling frame 5. The flange is connected to the workbench 2 by bolts. The tooling mechanism can be detachably mounted on the workbench 2 and the lifting beam 3, which is convenient for adjusting the workpiece according to the workpiece. The type of tooling mechanism that matches it is replaced. Specifically, the mounting column is detachably mounted on the tooling table 2 and the lifting beam 3 through a flange, so that it has the effect of replacement and disassembly. Then, the plug-in column 16 is inserted into the plug-in hole 17. The cross-sectional shapes of the plug-in column 16 and the plug-in hole 17 are both rectangular, which can locate the positions of the plug-in hole 19 and the threaded hole 18. When the plug-in column 16 is adapted to the plug-in hole 17, the threaded hole 18 corresponds to the plug-in hole 19, and then the screw 20 is installed so that the screw 20 passes through the plug-in hole 19 and is adapted to the threaded hole 18, thereby installing the tooling frame 5 on the mounting column, making the tooling mechanism a split structure. When damaged, it does not need to be replaced as a whole. Only the damaged parts need to be replaced, which reduces the replacement cost.

Claims

1. A lifting belt tensile testing machine, characterized in that: The invention comprises a vertical machine body (1), a workbench (2) is fixed on the vertical machine body (1), a lifting beam (3) is arranged just above the workbench (2), the lifting beam (3) is slidably arranged on the vertical machine body (1), a tensile test head (4) is installed at the bottom of the lifting beam (3), a tooling mechanism is installed on the test head of the tensile test head (4) and the workbench (2), the tooling mechanism comprises a tooling frame (5) and a bearing shaft (6), the tooling frame (5) is in the shape of a U-shaped character, the bearing shaft (6) is arranged in an opening of the tooling frame (5), the bearing shaft (6) is slidably passed through the tooling frame (5), a fixed sleeve on the bearing shaft (6) is provided with a limit ring (7), a movable sleeve on the bearing shaft (6) is provided with a moving ring (8), the outer diameter of the limit ring (7) and the outer diameter of the moving ring (8) are both larger than the diameter of the bearing shaft (6).

2. A lifting belt tensile testing machine according to claim 1, characterized in that: A through hole (9) is provided at one end of the opening of the tooling frame (5), and a limiting groove (10) is provided on the inner wall of the other end. One end of the load-bearing shaft (6) is movable through the through hole (9) and fits into the limiting groove (10).

3. A lifting belt tensile testing machine according to claim 2, characterized in that: A reset disk (11) is fixed to one end of the load-bearing shaft (6) away from the limiting groove (10), and the reset disk (11) is located outside the tooling frame (5). A spring (12) is sleeved on the load-bearing shaft (6), and the two ends of the spring (12) are respectively connected to the tooling frame (5) and the reset disk (11). When the spring (12) is in a normal state, one end of the load-bearing shaft (6) is adapted to be in the limiting groove (10).

4. A lifting belt tensile testing machine according to claim 2, characterized in that: A first limiting hole (13) is provided on the top of the tooling frame (5), and the first limiting hole (13) is connected to the limiting groove (10). A second limiting hole (14) is provided on the side wall of the load-bearing shaft (6). When the load-bearing shaft (6) is adapted to the limiting groove (10), the first limiting hole (13) coaxially corresponds to the second limiting hole (14), and the latch (15) is inserted into the first limiting hole (13) and the second limiting hole (14) at the same time.

5. A lifting belt tensile testing machine according to claim 1, characterized in that: The load-bearing shaft (6) is provided with an external thread, and the movable ring (8) is threadedly sleeved on the load-bearing shaft (6).

6. A lifting belt tensile testing machine according to claim 1, characterized in that: The tooling mechanism further comprises a mounting column and a plug-in column (16), wherein the mounting column is fixed on the workbench (2), a plug-in hole (17) is provided on the top of the mounting column, and the plug-in column (16) is fixed on the bottom of the tooling frame (5), and the plug-in column (16) is adapted to fit in the plug-in hole (17).

7. A lifting belt tensile testing machine according to claim 6, characterized in that: A threaded hole (18) is provided on the side wall of the plug-in column (16), and an insertion hole (19) is provided through the side wall of the mounting column. The screw (20) passes through the insertion hole (19) and fits into the threaded hole (18).

8. A lifting belt tensile testing machine according to claim 7, characterized in that: A flange is fixed to one end of the mounting column away from the tooling frame (5), and the flange is connected to the workbench (2) via bolts.

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