CN217381478U

CN217381478U - Adjustable chain tensioner

Info

Publication number: CN217381478U
Application number: CN202220442337.8U
Authority: CN
Inventors: 伏广玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-09-06
Anticipated expiration: 2032-03-03

Abstract

An adjustable chain tensioner relates to the technical field of mechanical assembly. The adjusting screw rod is movably connected with the fixed plate and penetrates through the fixed plate downwards to be connected with the movable support, the top end of the clamping arm is movably connected with two ends of the fixed plate, and the middle bending part of the clamping arm is movably connected with two ends of the movable support; first fixing pin holes are symmetrically formed in the two sides of the front end and the rear end of the fixing plate, the clamping arm is movably connected with the first fixing pin holes, and second fixing pin holes are further formed in the inner sides of the first fixing pin holes. Through setting up a plurality of fixed pinholes on the fixed plate to adjust the fixed position on pressing from both sides tight arm top, realize the taut to different span chains, press from both sides tight arm bottom and set up participating in of taking the radian, have better anti-skidding effect, improved the efficiency that chain detected maintenance, improved the security of operation process.

Description

Adjustable chain tensioner

Technical Field

The utility model relates to a chain strainer with adjustable relates to mechanical assembly technical field.

Background

The chain generally is the chain link or the ring of metal, it is multi-purpose mechanical transmission, pull, constitute complete chain through end to end with a plurality of substructures, because the chain can receive great drive power to pull usually, need carry out regular detection or maintenance, in order to ensure the chain in transmission in-process and actuating mechanism's connection compactness, the chain that has installed usually has great rate of tension, when the fracture condition appears in the chain, difficult through the manpower with the chain tensioning maintain the installation again in actuating mechanism, need use professional equipment with the fixed traction of chain end to end both ends, again with new parts connection installation.

The lever principle is adopted more to current chain fixed straining device, it is tight to press down the clamp arm through lead screw drive support, thereby stretch the chain to suitable position and carry out the installation of new part, equipment structure is simple, high durability and convenient use, can improve the detection and the maintenance efficiency of chain, but current structure is because the lever fulcrum is single, make the straining device span less, then be difficult to use when detecting or installing the part and damaging more chain, and its clamp arm front end lacks anti-skidding structure with part contact stiff end, the slippage condition often appears, not only influence normal production operation, still can bring the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to defect among the prior art or not enough, provide a chain strainer with adjustable, through set up fixed bolt on the fixed plate to adjust the fixed position on clamp arm top, realize the take-up to different span chains, clamp arm bottom sets up participating in of taking different radians, can adapt unidimensional chain, and has better anti-skidding effect, has improved the efficiency that the chain detected the maintenance, has improved the security of operation process.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the adjustable clamping device comprises an adjusting screw rod 1, a fixed plate 2, a movable support 3 and a clamping arm 4, wherein the adjusting screw rod 1 is movably connected with the fixed plate 2 and penetrates through the fixed plate 2 downwards to be connected with the movable support 3, the top end of the clamping arm 4 is movably connected with two ends of the fixed plate 2, and the middle bending part of the clamping arm 4 is movably connected with two ends of the movable support 3; first fixing pin holes 2-1 are symmetrically formed in the front end and the rear end of the fixing plate 2, the clamping arm 4 is movably connected with the first fixing pin holes 2-1, and second fixing pin holes 2-2 are further formed in the inner sides of the first fixing pin holes 2-1.

The center of the fixed plate 2 is provided with a threaded through hole 2-4, and two sides of the bottom of the fixed plate 2 are provided with movable grooves 2-3.

The top end of the clamping arm 4 is of an arc-shaped structure, the top end of the clamping arm 4 is provided with a fixing pin 5, and the fixing pin 5 is movably connected with the first fixing pin hole 2-1.

The bottom of the clamping arm 4 is provided with a fixed pin 4-1, and the fixed pin 4-1 is a pin with an inner arc structure.

The inner side of the connecting section of the fixing pin 4-1 and the clamping arm 4 is provided with an arc-shaped convex block 4-2.

Two sides of the movable support 3 are provided with limit grooves 3-1, and the clamping arm 4 is movably connected with the limit grooves 3-1.

The center of the movable support 3 is provided with a rotary through hole 3-2, the bottom end of the adjusting screw rod 1 penetrates through the rotary through hole 3-2 and is limited by a bottom screw, third fixing pin holes 3-3 are symmetrically arranged on the two sides of the front end and the rear end of the movable support 3, and limiting pins 7 are arranged in the third fixing pin holes 3-3.

And a cross rod 6 is arranged at the top of the adjusting screw rod 1.

After the technical scheme is adopted, the utility model discloses beneficial effect does: through setting up a plurality of fixed pinholes on the fixed plate to adjust the fixed position on pressing from both sides tight arm top, realize the taut to different span chains, press from both sides tight arm bottom and set up participating in of taking the radian, have better anti-skidding effect, improved the efficiency that chain detected maintenance, improved the security of operation process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic structural view of the fixing plate 2 of fig. 1;

FIG. 4 is a bottom view of FIG. 2;

fig. 5 is a schematic structural view of the moving rack 3 in fig. 1;

fig. 6 is a top view of fig. 3.

Description of reference numerals: the clamping device comprises an adjusting screw rod 1, a fixing plate 2, a movable support 3, a clamping arm 4, a fixing bolt 5, a fixing pin 5, a cross rod 6, a limiting pin 7, a first fixing pin hole 2-1, a second fixing pin hole 2-2, a movable groove 2-3, a threaded through hole 2-4, a limiting groove 3-1, a rotary through hole 3-2, a third fixing pin hole 3-3, a fixing pin 4-1 and an arc-shaped bump 4-2.

Detailed Description

Referring to fig. 1 to 6, the technical solution adopted by the present embodiment is: the adjustable clamping device comprises an adjusting screw rod 1, a fixed plate 2, a movable support 3 and a clamping arm 4, wherein the adjusting screw rod 1 is movably connected with the fixed plate 2 and penetrates through the fixed plate 2 downwards to be connected with the movable support 3, the top end of the clamping arm 4 is movably connected with two ends of the fixed plate 2, and the middle bending part of the clamping arm 4 is movably connected with two ends of the movable support 3; the fixing plate is characterized in that first fixing pin holes 2-1 are symmetrically formed in the front end and the rear end of the fixing plate 2, the clamping arm 4 is movably connected with the first fixing pin holes 2-1, second fixing pin holes 2-2 are further formed in the inner sides of the first fixing pin holes 2-1, a threaded through hole 2-4 is formed in the center of the fixing plate 2, movable grooves 2-3 are formed in the two sides of the bottom of the fixing plate 2, the top end of the clamping arm 4 is clamped to be of a circular arc-shaped structure, a fixing pin 5 is arranged at the top end of the clamping arm 4, and the fixing pin 5 is movably connected with the first fixing pin holes 2-1. The fixing position of the clamping arm 4 is adjusted through the matching of the fixing bolt 5, the first fixing pin hole 2-1 and the second fixing pin hole 2-2, so that the chain clamping device corresponds to chains with different spacing widths, and the application is wider.

Furthermore, the bottom of the clamping arm 4 is provided with a fixed pin 4-1, and the fixed pin 4-1 is a pin with an inner arc structure. The fixed pins 4-1 are inserted into the chain, and the inner arc-shaped pins can effectively play a role in skid resistance and prevent the pins from slipping out of the chain in the tensioning process.

Further, an arc-shaped convex block 4-2 is arranged on the inner side of the connecting section of the fixing pin 4-1 and the clamping arm 4. The arc-shaped convex block 4-2 is used for clamping and fixing the chain, so that the fastening effect is better.

Furthermore, two sides of the movable support 3 are provided with limit grooves 3-1, and the clamping arm 4 is movably connected with the limit grooves 3-1. The clamping or releasing of the clamping arm 4 is realized through the arrangement of the limiting groove 3-1.

Furthermore, a rotating through hole 3-2 is formed in the center of the movable support 3, the bottom end of the adjusting screw rod 1 penetrates through the rotating through hole 3-2 and is limited by a bottom screw, third fixing pin holes 3-3 are symmetrically formed in the front end and the rear end of the movable support 3, and limiting pins 7 are arranged in the third fixing pin holes 3-3. The adjusting screw rod 1 is fixed on the movable support 3 through the two fastening nuts 8, the fastening effect is good, and the limit pin 7 limits the stroke of the clamping arm 4.

Furthermore, a cross rod 6 is arranged at the top of the adjusting screw rod 1. The adjusting screw rod 1 is rotated by the cross rod 6 to lift, so that the use is more convenient.

The utility model discloses a theory of operation: the top end fixing position of the clamping arm 4 is set according to the spacing width of the chain to be tensioned, when the spacing is small, the top end of the clamping arm 4 is moved to the first fixing pin hole 2-1, the fixing pin 5 is inserted, when the spacing of the chain is large, the top end of the clamping arm 4 is moved to the position, the fixing pin 5 is inserted, and the fixing position of the clamping arm 4 is adjusted through the matching of the fixing bolt 5 with the first fixing pin hole 2-1 and the second fixing pin hole 2-2, so that the chain tensioning device is corresponding to chains with different spacing widths, and is wider in applicability; insert fixed participating in 4-1 in the chain, arc lug 4-2 carries out the chucking to the chain fixed, interior arc structure participates in and can effectively play anti-skidding effect, have limiting displacement to the chain, participate in the slippage in the chain in preventing taut process, fastening effect is better when tensile chain, it promotes fixed plate 2 to move downwards to rotate horizontal pole 6 accommodate the lead screw 1 after accomplishing fixed, fixed plate 2 drives and presss from both sides tight arm 4 and removes in spacing groove 3-1, it draws in tight chain tensioning to press from both sides tight arm 4 inwards in 3 removal processes of movable support, install new part and connect the chain when straining the chain to the suitable position, screw when dismantling the chain equally with tightening mechanism fixed back and can dismantle maintenance or change the part.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a chain strainer with adjustable, it contains accommodate the lead screw (1), fixed plate (2), movable support (3), presss from both sides tight arm (4), accommodate the lead screw (1) and fixed plate (2) swing joint and run through fixed plate (2) downwards and be connected with movable support (3), press from both sides tight arm (4) top and fixed plate (2) both ends swing joint, press from both sides tight arm (4) middle part department of buckling and movable support (3) both ends swing joint, its characterized in that: first fixing pin holes (2-1) are symmetrically formed in the front end and the rear end of the fixing plate (2), the clamping arm (4) is movably connected with the first fixing pin holes (2-1), and second fixing pin holes (2-2) are further formed in the inner side of the first fixing pin holes (2-1).

2. The adjustable chain tensioner as set forth in claim 1, wherein: the center of the fixed plate (2) is provided with a threaded through hole (2-4), and two sides of the bottom of the fixed plate (2) are provided with movable grooves (2-3).

3. The adjustable chain tensioner as set forth in claim 1, wherein: the top end of the clamping arm (4) is of an arc-shaped structure, a fixing pin (5) is arranged at the top end of the clamping arm (4), and the fixing pin (5) is movably connected with the first fixing pin hole (2-1).

4. The adjustable chain tensioner as set forth in claim 1, wherein: the bottom of the clamping arm (4) is provided with a fixed pin (4-1), and the fixed pin (4-1) is a pin with an inner arc structure.

5. The adjustable chain tensioner as set forth in claim 4, wherein: the inner side of the connecting section of the fixing pin (4-1) and the clamping arm (4) is provided with an arc-shaped convex block (4-2).

6. The adjustable chain tensioner as set forth in claim 1, wherein: limiting grooves (3-1) are formed in two sides of the movable support (3), and the clamping arm (4) is movably connected with the limiting grooves (3-1).

7. The adjustable chain tensioner as set forth in claim 1, wherein: the center of the movable support (3) is provided with a rotary through hole (3-2), the bottom end of the adjusting screw rod (1) penetrates through the rotary through hole (3-2) and is limited by a bottom screw, third fixing pin holes (3-3) are symmetrically formed in the front end and the rear end of the movable support (3), and limiting pins (7) are arranged in the third fixing pin holes (3-3).

8. The adjustable chain tensioner as set forth in claim 1, wherein: and a cross rod (6) is arranged at the top of the adjusting screw rod (1).