CN220787686U - Adjustable indexing type tensioning device for testing machine - Google Patents

Abstract

The utility model belongs to the technical field of tensioning mechanisms, and particularly relates to an adjustable indexing type tensioning device for a testing machine, which solves the problems of serious equipment abrasion and manual tensioning in the prior art.

Description

Adjustable indexing type tensioning device for testing machine

Technical Field

The utility model relates to the technical field of tensioning mechanisms, in particular to an adjustable indexing type tensioning device for a testing machine.

Background

At present, two kinds of tensioning devices are mainly used in the market, one kind is that a conveyer belt is tensioned through a lever type weight, the tensioning device is complex in operation, along with the lengthening of a conveyer belt sample piece, weight force can be changed along with the lengthening of the sample piece, a test result is not accurate enough, and the other kind is that a vertical weight is used for applying the tensioning force.

The application publication number in the prior art is: CN104614239a, the name is an adjustable graduation formula overspeed device tensioner for testing machine, including ball screw nut pair, graduated disk, bullet needle, draw-in groove, rotatory piece, rotatory wheel, tensioning sliding sleeve, tensioning support, bottom plate, linear bearing, zhou Dingban, wire rope the tensioning sliding sleeve is arranged in on the tensioning support, ball screw nut pair is arranged in the tensioning sliding sleeve inside, the graduated disk is fixed at the sliding sleeve, rotatory piece is installed and is cooperated with it at ball screw tip, rotatory handle is installed on rotatory piece, the bullet needle is installed in the handle inside, by bullet handle control its locking, linear bearing is fixed on the bottom plate by the spiral shell check, linear bearing comprises bearing support, smooth shaft and slider, this patent can apply the tensioning force for the testing machine sample, still solved the problem of graduation and auto-lock, when making tensioning force exert more accurate, simple structure simultaneously, convenient operation.

However, the tensioning of the patent requires manual adjustment, is cumbersome to operate, has many moving parts of the device, but has no lubrication arrangement, and can cause great wear on the moving components inside in the case of long-term use.

Disclosure of Invention

The utility model aims to provide an adjustable indexing type tensioning device for a testing machine, which solves the problems that manual tensioning is needed and equipment is seriously worn.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an adjustable graduation formula overspeed device tensioner for testing machine, includes base and tensioning board, the top of base is through screw fixedly connected with box, the inside rotation of box is installed the threaded rod, the one end of threaded rod is through screw fixedly connected with crank, the top of base is through screw fixedly connected with locating piece, the one end of threaded rod is rotated and is installed the inside of locating piece, the bottom of tensioning board is through screw fixedly connected with screw block;

the screw thread piece threaded connection is in on the threaded rod, six be the movable block of symmetrical arrangement is equipped with to the inside slip of box, six the top of movable block is all rotated and is installed the running wheel, eight fixed pulleys that are symmetrical arrangement are installed in the inside rotation of box, one side of tensioning board is connected with wire rope, the top of base is provided with guiding component.

Preferably, the inside of box has seted up the oilhole, the inside nestification of guide assembly has graphite cover.

Preferably, the guide assembly comprises four symmetrically arranged fixing blocks, the four fixing blocks are fixedly connected to the top of the base through screws, two guide rods are fixedly connected between the four fixing blocks through screws, connecting blocks are movably sleeved on the outer peripheral surfaces of the two guide rods, the connecting blocks are fixedly connected to the bottom of the tensioning plate through screws, and the guide rods are used for guiding the tensioning plate.

Preferably, the inside of box has been seted up the circular slot, the threaded rod rotates and installs the inside in circular slot, two mounting grooves that are symmetrical arrangement have been seted up to the inside of box, the tight pulley rotates and installs the inside in mounting groove, the circular slot is used for installing the threaded rod.

Preferably, six sliding grooves which are symmetrically arranged are formed in the box body, the six movable blocks are respectively and slidably connected in the six sliding grooves, and the sliding grooves are used for installing the movable blocks.

Preferably, a spring is connected between the movable block and the sliding groove, and the spring is used for resetting the movable block.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the arrangement of the structures such as the crank, the tensioning plate and the like, the crank is rocked to adjust the distance of the tensioning plate, the test article is clamped after proper adjustment, the spring in the clamped test article tightens the steel wire rope, and the test article is tightened when the device loosens, so that the problem of manually adjusting the tensioning is solved.

2. According to the utility model, through the arrangement of the structures such as the oil hole, the graphite sleeve and the like, the movable parts of the equipment are worn when the equipment moves, oil is injected into the oil hole when the equipment is used, the crank is rocked, the oil is brought into the threaded rod and the threaded block, and the threaded rod is lubricated, so that the problem of serious equipment wear is solved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of a movable wheel structure according to the present utility model;

fig. 4 is an enlarged view at a of the present utility model.

In the figure: 1. a base; 2. a case; 3. a tensioning plate; 4. a connecting block; 5. a fixed block; 6. a screw block; 7. a crank; 8. an oil hole; 9. a mounting groove; 10. a fixed wheel; 11. a chute; 12. a spring; 13. a circular groove; 14. a threaded rod; 15. a wire rope; 16. a movable wheel; 17. a movable block; 18. a guide rod; 19. a graphite sleeve; 20. and (5) positioning blocks.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an adjustable indexing type tensioning device for a testing machine comprises a base 1 and a tensioning plate 3, wherein the top of the base 1 is fixedly connected with a box body 2 through screws, a threaded rod 14 is rotatably installed in the box body 2, one end of the threaded rod 14 is fixedly connected with a crank 7 through screws, the top of the base 1 is fixedly connected with a positioning block 20 through screws, one end of the threaded rod 14 is rotatably installed in the positioning block 20, the bottom of the tensioning plate 3 is fixedly connected with a threaded block 6 through screws, the threaded block 6 is in threaded connection with the threaded rod 14, six symmetrically arranged movable blocks 17 are slidably arranged in the box body 2, movable wheels 16 are rotatably installed at the tops of the six movable blocks 17, eight symmetrically arranged fixed wheels 10 are rotatably installed in the box body 2, one side of the tensioning plate 3 is connected with a steel wire rope 15, a guide assembly is arranged at the top of the base 1, the distance of the tensioning plate 3 is adjusted through the crank 7 and the arrangement of the tensioning plate 3, a proper clamping test object is clamped by the shaking, the spring 12 in the clamping object is tensioned, and the tensioning of the test object is needed when the device is loosened, and the tensioning of the test object is needed.

Referring to fig. 2-4, an oil hole 8 is formed in the box body 2, a graphite sleeve 19 is nested in the guide assembly, and through the arrangement of the oil hole 8, the graphite sleeve 19 and other structures, abrasion is caused to movable parts of the equipment when the equipment moves, oil is injected into the oil hole 8 during use, a crank 7 is rocked, oil is brought into the threaded rod 14 and the threaded block 6, and the threaded rod 14 is lubricated, so that the problem of serious equipment abrasion is solved.

Referring to fig. 1-4, the guiding assembly comprises four symmetrically arranged fixing blocks 5, the four fixing blocks 5 are fixedly connected to the top of the base 1 through screws, two guiding rods 18 are fixedly connected between the four fixing blocks 5 through screws, connecting blocks 4 are movably sleeved on the outer peripheral surfaces of the two guiding rods 18, the connecting blocks 4 are fixedly connected to the bottom of the tensioning plate 3 through screws, a circular groove 13 is formed in the box body 2, a threaded rod 14 is rotatably mounted in the circular groove 13, two symmetrically arranged mounting grooves 9 are formed in the box body 2, fixing wheels 10 are rotatably mounted in the mounting grooves 9 respectively, six symmetrically arranged sliding grooves 11 are formed in the box body 2, six movable blocks 17 are slidably connected to the six sliding grooves 11 respectively, and springs 12 are commonly connected between the movable blocks 17 and the sliding grooves 11.

The specific implementation process of the utility model is as follows: the crank 7 is rocked, the crank 7 drives the threaded rod 14 to rotate, the threaded rod 14 is in threaded connection with the threaded block 6, the threaded block 6 and the tensioning plate 3 move, after the tensioning plate 3 is properly adjusted, the spring 12 in the box body 2 drives the movable block 17 and the movable wheel 16 to move, the movable wheel 16 tightens the steel wire rope 15, so that the steel wire rope 15 can tighten the tensioning plate 3, and the test article can be automatically tensioned and adjusted;

further, oiling to oilhole 8 drives the part that lubricating oil contacted to threaded rod 14 through threaded rod 14 and lubricates, and the inside graphite cover 19 of tensioning board 3 can reduce frictional force when moving on guide bar 18 because of its material, and the wearing and tearing that the setting of two structures can greatly reduced equipment caused when using to solve the serious problem of equipment wearing and tearing.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. An adjustable indexing type tensioning device for a testing machine, comprising a base (1) and a tensioning plate (3), and being characterized in that: the top of the base (1) is fixedly connected with a box body (2) through a screw, a threaded rod (14) is rotatably installed in the box body (2), one end of the threaded rod (14) is fixedly connected with a crank (7) through a screw, the top of the base (1) is fixedly connected with a positioning block (20) through a screw, one end of the threaded rod (14) is rotatably installed in the positioning block (20), and the bottom of the tensioning plate (3) is fixedly connected with a threaded block (6) through a screw;

screw thread piece (6) threaded connection is in on threaded rod (14), the inside slip of box (2) is equipped with six movable blocks (17) that are symmetrical arrangement, six movable block (17)'s top is all rotated and is installed movable wheel (16), eight tight pulleys (10) that are symmetrical arrangement are installed in the inside rotation of box (2), one side of tensioning board (3) is connected with wire rope (15), the top of base (1) is provided with guiding component.

2. An adjustable indexing tensioner for a testing machine according to claim 1, wherein: the inside of box (2) has seted up oilhole (8), the inside nestification of direction subassembly has graphite cover (19).

3. An adjustable indexing tensioner for a testing machine according to claim 1, wherein: the guide assembly comprises four symmetrically arranged fixing blocks (5), the four fixing blocks (5) are fixedly connected to the top of the base (1) through screws, two guide rods (18) are fixedly connected between the four fixing blocks (5) through screws, connecting blocks (4) are movably sleeved on the outer peripheral surfaces of the two guide rods (18), and the connecting blocks (4) are fixedly connected to the bottom of the tensioning plate (3) through screws.

4. An adjustable indexing tensioner for a testing machine according to claim 1, wherein: the novel anti-theft box is characterized in that a round groove (13) is formed in the box body (2), the threaded rod (14) is rotatably mounted in the round groove (13), two symmetrically-arranged mounting grooves (9) are formed in the box body (2), and the fixing wheel (10) is rotatably mounted in the mounting grooves (9).

5. An adjustable indexing tensioner for a testing machine according to claim 1, wherein: six sliding grooves (11) which are symmetrically arranged are formed in the box body (2), and six movable blocks (17) are respectively and slidably connected in the six sliding grooves (11).

6. An adjustable indexing tensioner for a testing machine according to claim 5, wherein: a spring (12) is connected between the movable block (17) and the chute (11).