CN215317186U - Clamp - Google Patents

Abstract

The utility model relates to a fixture, it includes the base, the fixed base block that is provided with on the base, one side of base block is provided with the storage tank, placed two cranks on the base, two the crank is located storage tank and two the lateral wall butt that the position that the crank is located the storage tank was kept away from each other is at the inside wall of storage tank, the fixed block that is provided with on the base, the fixed block is located between the crank, be provided with the expansion subassembly between fixed block and the base block, the expansion subassembly can strut or shrink, can support the lateral wall that is close to each other at two cranks when the expansion subassembly struts, the expansion subassembly can promote two cranks when continuously struts towards the direction that two cranks kept away from each other and make the crank tightly clamped between the inside wall of expansion subassembly and storage tank. The present application has the following effects: the clamp can be used for clamping cranks of different sizes and has the advantage of good universality.

Description

Clamp

Technical Field

The present application relates to a clamp.

Background

The jig is a device for fixing a processing object to occupy a correct position for receiving construction or inspection in a machine manufacturing process, and is also called a jig. The fixture is generally composed of a positioning original, a clamping device, a tool setting guide original, an indexing device, a connecting original, a fixture body and the like.

The clamp is widely applied in the field of machining, for example, a crank of a bicycle needs to be fixed by the clamp when being machined.

In view of the above-mentioned technologies, the inventor believes that a general clamp can only accommodate a crank of one size, and is poor in versatility, and therefore needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the poor problem of general anchor clamps commonality, this application provides an anchor clamps.

The application provides a anchor clamps adopts following technical scheme:

the utility model provides an anchor clamps, includes the base, be provided with the base block on the base, one side of base block is provided with the storage tank, two cranks have been placed on the base, two the crank is located storage tank and two the lateral wall butt that the position that the crank is located the storage tank was kept away from each other is at the inside wall of storage tank, two be provided with the fixed block between the crank, be provided with the expansion subassembly between fixed block and the base block, the expansion subassembly can support tightly at the lateral wall that two cranks are close to each other, the expansion subassembly can promote two cranks towards the direction that two cranks kept away from each other.

Through adopting above-mentioned technical scheme, the crank is pressed from both sides tightly between expansion subassembly and storage tank inside wall, and when different specification and dimension's crank was placed on the base, only need to strut the expansion subassembly continuously until the expansion subassembly compress tightly the crank on the inside wall of storage tank can, have the advantage that the commonality is good.

Preferably, the expansion assembly comprises two tight arms, screw rod and elasticity nut of supporting, and two are supported the mutual symmetry setting of tight arm, and two are supported the one end of tight arm and all are rotated with the fixed block and are connected, and two are supported the other end of tight arm and respectively the butt at the lateral wall that two cranks are close to each other, screw rod and elasticity nut all set up at two and support between tight arm, wherein one end of screw rod and one of them support tight arm fixed connection, another be provided with the jack on the tight arm of supporting, the jack aperture is greater than the rod footpath of screw rod, the other end of screw rod inserts in the jack, the elasticity nut cover is established on the screw rod, elasticity nut diameter is greater than the aperture of jack.

Through adopting above-mentioned technical scheme, because the elasticity nut diameter is greater than the aperture of jack, so revolve the elasticity nut towards the direction that is close to the jack, support on the tight arm until the elasticity nut, continue swivel nut this moment, thereby because the nut can't get into the jack and can apply reaction force to the screw rod, two expansion block struts this moment and then can compress tightly the crank on the inside wall of storage tank.

Preferably, two inside walls of the accommodating groove are provided with cushion blocks, one surface of the cushion block, which is far away from the inside wall of the accommodating groove, is provided with one section of arc-shaped surface, and the arc-shaped surface of the cushion block is attached to the arc-shaped side wall of the end part of the crank.

Through adopting above-mentioned technical scheme, because the tip of crank is circular form, the arcwall face of cushion can be laminated with articulate tip more closely for the crank can be by the centre gripping more stably, promotes the stability of centre gripping.

Preferably, the inside wall of storage tank is provided with the mounting groove, the one side intercommunication of base is kept away from to mounting groove and base block, the cushion is pegged graft with the mounting groove and is matchd.

Through adopting above-mentioned technical scheme, when the crank of the different models of centre gripping, change corresponding cushion and make the centre gripping more firm, the cushion is pegged graft and is set up in the mounting groove of storage tank lateral wall, and the cushion can directly be extracted from the mounting groove, the change of the cushion of can being convenient for.

Preferably, two opposite lateral walls of cushion are provided with the constant head tank, the upper and lower two sides intercommunication of constant head tank and cushion, two inside walls of storage tank are provided with the location strip, the location strip matches with the constant head tank is pegged graft each other.

Through adopting above-mentioned technical scheme, through constant head tank and location strip cooperation for the cushion can only be followed the mounting groove and kept away from the one end of base and taken out, can prevent that the cushion from falling out from the mounting groove side easily, promotes the stability of structure.

Preferably, the fixed block is provided with a through hole, the through hole is communicated with two opposite side walls of the fixed block, a pressing strip is movably arranged in the through hole, two ends of the pressing strip are respectively positioned above the two cranks, a fastening bolt is arranged on the surface, far away from the base, of the fixed block, the fastening bolt penetrates through the fixed block to enter the through hole, and the lower end of the fastening bolt is fastened on the pressing strip.

Through adopting above-mentioned technical scheme, further compress tightly the crank and fix on the base through compressing tightly the strip and supporting tight bolt for the crank is fixed more firmly with the base.

Preferably, the base block, the fixing block and the base are fixed in a bolt connection mode.

Through adopting above-mentioned technical scheme, base block and fixed block can be convenient for install and dismantle, can conveniently change when base block or fixed block damage.

Preferably, the expansion assembly comprises two clamp blocks, expansion piece and adjusting bolt, two it connects at the base block to press from both sides the rotation of clamp block, two it sets up, two to press from both sides the symmetry of clamp block butt one side of keeping away from the storage tank inside wall at two cranks respectively, expansion piece sliding connection is on the fixed block, the upper end of expansion piece sets up to "V" font of falling, the upper end of expansion piece can be inserted two and press from both sides between the clamp block and struts two clamp blocks, adjusting bolt sets up on the base block, adjusting bolt passes between base block and two clamp blocks with fixed block threaded connection.

Through adopting above-mentioned technical scheme, can press from both sides the crank through pressing from both sides tight piece and expansion piece and press from both sides tightly in the storage tank, the expansion piece upper end inserts between two tight pieces of clamp, and because the expansion piece upper end is "V" font of falling, so when adjusting bolt makes the expansion piece toward two clamp continuously when pressing from both sides between the piece, two tight pieces of clamp are constantly strutted, consequently two press from both sides the interval adjustable between the two inside walls of tight piece and storage tank, and then adaptable not unidimensional crank is pressed from both sides tightly.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) the expansion device is arranged, so that workpieces with different sizes and specifications can be clamped, and the applicability and the universality are better;

(2) through setting up the cushion at the storage tank inner wall, the arcwall face and the articulate tip laminating of cushion for the crank tip is inseparabler with anchor clamps laminating, and then makes the stability of centre gripping better.

Drawings

FIG. 1 is a schematic structural diagram of a base and a base block of the present embodiment;

FIG. 2 is a schematic structural diagram of the first embodiment;

FIG. 3 is a schematic structural diagram of the second embodiment;

fig. 4 is an exploded view of the second expansion element and anchor block of this embodiment.

Reference numerals: 1. a base; 2. a base block; 3. a crank; 4. an expansion assembly; 5. a compression assembly; 6. a fixed block; 7. cushion blocks; 21. a containing groove; 41. abutting the arm tightly; 42. a screw; 43. loosening and tightening the nut; 44. a clamping block; 45. an expansion member; 46. adjusting the bolt; 51. compressing the strips; 52. tightly abutting against the bolt; 61. a chute; 71. a positioning bar; 211. mounting grooves; 411. a connecting arm; 412. a propping block; 451. a slider; 2111. and (6) positioning a groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a clamp. The first embodiment, referring to fig. 1, a fixture includes base 1, and base 1's surface is square, and one of them side of base 1 is provided with base block 2, and base block 2 is a rectangular block, and storage tank 21 has been seted up to one side that base block 2 is close to base 1 axis, and storage tank 21 and base block 2 are close to base 1's one side and keep away from base 1's one side and all communicate with each other, and storage tank 21 makes base block 2 be "pi" form.

Referring to fig. 2, two cranks 3 are placed on the base 1, the end portions of the two cranks 3 extend into the accommodating groove 21, the two cranks 3 are parallel to each other and perpendicular to the base block 2, and the side walls of the two cranks 3 which are far away from each other are respectively abutted against the inner side wall of the accommodating groove 21.

Referring to fig. 2, an expansion assembly 4 and a pressing assembly 5 are arranged on the base 1, the expansion assembly 4 is arranged between the two cranks 3, the cranks 3 are clamped between the expansion assembly 4 and the inner side wall of the accommodating groove 21, the pressing assembly 5 is arranged on the two cranks 3, and the pressing assembly 5 is used for pressing the two cranks 3 on the base 1.

Referring to fig. 2, the expansion assembly 4 includes two tightening arms 41, a screw rod 42 and a turnbuckle 43, the fixing block 6 is disposed between the two cranks 3, the two tightening arms 41 are both rotatably connected to the fixing block 6, the two tightening arms 41 are symmetrically disposed with a center line between the two cranks 3 as a symmetry axis, the two tightening arms 41 each include a connecting arm 411 and a tightening block 412, the connecting arm 411 is parallel to the crank 3, one end of the connecting arm 411 is rotatably connected to the fixing block 6, the tightening block 412 is disposed at an end of the connecting arm 411 away from the fixing block 6, the tightening block 412 is disposed at a side wall of the connecting arm 411 away from each other, the tightening block 412 abuts against an end of the portion of the crank 3 extending into the accommodating groove 21, the tightening block 412 abuts against a side wall of the crank 3 away from an inner side wall of the accommodating groove 21, the screw rod 42 and the turnbuckle 43 are disposed between the two tightening arms 41, the screw rod 42 is welded and fixed with one of the connecting arm 411, the other connecting arm 411 is provided with a jack, the aperture of the jack is larger than the rod diameter of the screw rod 42, the screw rod 42 is inserted into the jack, the turnbuckle 43 is in threaded fit with the screw rod 42, and the diameter of the turnbuckle 43 is larger than the aperture of the jack.

Referring to fig. 2, since the end of the crank 3 is circular, a section of circular arc surface is disposed on one surface of the abutting block 412 close to the crank 3, so that the abutting block 412 is attached to the crank 3 more closely.

Referring to fig. 2, two inside walls of the accommodating groove 21 are provided with cushion blocks 7, the cushion blocks 7 are attached to the end portion of the crank 3, and one side, close to the crank 3, of each cushion block 7 is provided with one section of circular arc surface, so that the cushion blocks 7 and the crank 3 are attached more tightly.

Referring to fig. 1 and 2, the inner side wall of the accommodating groove 21 is provided with an installation groove 211, the shape of the installation groove 211 is matched with the shape of the cushion block 7, the installation groove 211 is communicated with the accommodating groove 21, the surface of the installation groove 211, which is far away from the base 1, and the surface, which is close to the base 1, of the base block 2 are communicated, and the cushion block 7 is inserted into the installation groove 211.

Referring to fig. 1 and 2, the two inner side walls of the mounting groove 211 are provided with positioning grooves 2111, the two side walls of the cushion block 7 are provided with positioning strips 71 matched with the positioning grooves 2111, the positioning grooves 2111 are communicated with the upper surface and the lower surface of the mounting groove 211, the positioning strips 71 are aligned with the positioning grooves 2111 when the cushion block 7 is inserted into the mounting groove 211, and the positioning grooves 2111 and the positioning strips 71 enable the cushion block 7 to be taken out or put in only from an opening of one end, far away from the base 1, of the mounting groove 211.

Referring to fig. 2, the pressing assembly 5 includes a pressing strip 51 and a fastening bolt 52, the pressing strip 51 is disposed on the fixing block 6, the pressing strip 51 is perpendicular to the two cranks 3, and two ends of the pressing strip 51 are respectively attached to one surfaces of the two cranks 3 away from the base 1; the cross-section of the pressing strip 51 is rectangular, a through hole is formed in the fixing block 6, the through hole is communicated with two opposite side faces of the fixing block 6, the through hole is a rectangular hole, the pressing strip 51 penetrates through the through hole, the width of the through hole is the same as that of the pressing strip 51, the height of the through hole is larger than the thickness of the pressing strip 51, the fastening bolt 52 is arranged on one face, far away from the base 1, of the fixing block 6, the fastening bolt 52 penetrates through the fixing block 6 to enter the through hole, and the lower end of the fastening bolt 52 is fastened on the pressing strip 51.

In order to facilitate the integral installation and disassembly, the base block 2 and the fixed block 6 are fixed with the base 1 in a bolt locking manner.

The implementation principle of the first embodiment of the application is as follows: after the crank 3 is placed on the base 1, the elastic nut 43 is rotated towards the direction of the jack, the elastic nut 43 is finally abutted against the abutting arm 41 provided with the jack, at the moment, the elastic nut 43 is continuously rotated, because the elastic nut 43 cannot enter the jack, the elastic nut 43 can provide a reverse force for the screw rod 42 to push the screw rod 42 to move towards the direction far away from the elastic nut 43, at the moment, the elastic nut 43 and the screw rod 42 push the two abutting arms 41 away from each other, and until the abutting arm 41 and the cushion block 7 on the side wall of the accommodating groove 21 clamp the crank 3 in the middle; when the different crank 3 of model is placed on base 1, adjust through elasticity nut 43 and screw rod 42 and support the interval between tight arm 41 and the storage tank 21 inside wall and make crank 3 can by the centre gripping, consequently this application can adapt to the clamp of different model cranks 3 tightly, compares ordinary anchor clamps and has better commonality.

Embodiment two, referring to fig. 3 and 4, the difference between this embodiment and embodiment one lies in the difference of the expansion assembly 4, specifically, the expansion assembly 4 in this embodiment includes two clamping blocks 44, an expansion piece 45 and an adjusting bolt 46, the two clamping blocks 44 are symmetrically disposed with a center line between the two cranks 3 as a symmetry axis, a certain distance is provided between the two clamping blocks 44, the two clamping blocks 44 are rotatably connected to the bottom wall of the accommodating groove 21 of the base block 2, the surfaces of the two clamping blocks 44 away from each other abut against the cranks 3, a sliding block 451 is disposed on the expansion piece 45, a sliding slot 61 is disposed on the fixed block 6, the sliding slot 61 is disposed perpendicular to the base block 2, the sliding block 451 on the expansion piece 45 is inserted into the sliding slot 61, the width of the expansion piece 45 is greater than the distance between the two clamping blocks 44, the expansion piece 45 is slidably connected with the fixed block 6 through the sliding block 451 and the sliding slot 61, the sliding direction of the expansion piece 45 is perpendicular to the base block 2, the expansion piece 45 is located between the two clamping blocks 44 and the fixed block 6, one end, far away from the fixed block 6, of the expansion piece 45 is provided with two inclined planes which are inverted V-shaped, the lower end of one face, close to each other, of the two clamping blocks 44 is provided with an inclined plane which is attached to one end, far away from the fixed block 6, of the expansion piece 45, and one end, far away from the fixed block 6, of the expansion piece 45 is inserted between the two clamping blocks 44.

Referring to fig. 3, an adjusting bolt 46 is arranged on the side of the base block 2 away from the crank 3, the adjusting bolt 46 penetrates between the base block 2 and the two clamping blocks 44 and is inserted into one end of the expansion piece 45 away from the fixed block 6, the lower end of the adjusting bolt 46 is in threaded connection with the expansion piece 45, and the nut of the adjusting bolt 46 abuts against the side of the base block 2 away from the crank 3.

The implementation principle of the second embodiment of the present application is as follows: when the crank 3 is clamped, the adjusting bolt 46 is tightened, and the adjusting bolt 46 cannot enter the base block 2, so that the adjusting bolt 46 gradually pulls the expansion piece 45 away from the fixed block 6, the expansion piece 45 is inserted between the two clamping blocks 44 to expand the two clamping blocks 44, and the clamping blocks 44 press the crank 3 on the inner side wall of the accommodating groove 21.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A clamp, characterized by: including base (1), fixed base block (2) that is provided with on base (1), one side of base block (2) is provided with storage tank (21), two crank (3) have been placed on base (1), two crank (3) are located storage tank (21) and two the lateral wall butt that crank (3) are located the position of storage tank (21) and keep away from each other is at the inside wall of storage tank (21), the fixed block (6) that is provided with on base (1), fixed block (6) are located between crank (3), be provided with expansion subassembly (4) between fixed block (6) and base block (2), expansion subassembly (4) can strut or shrink, can support when expanding subassembly (4) strut tightly at the lateral wall that two crank (3) are close to each other, expansion subassembly (4) can push away from two crank (3) towards the direction that two crank (3) keep away from each other when continuously strutting make crank (3) by pressing from each other at expansion subassembly (3), (3) 4) And the inner side wall of the containing groove (21).

2. A clamp as claimed in claim 1, wherein: expansion subassembly (4) are supported tight arm (41), screw rod (42) and elasticity nut (43) by two and are constituteed, and two are supported tight arm (41) mutual symmetry and set up, and two are supported the one end of tight arm (41) and all rotate with fixed block (6) and are connected, and two are supported the other end of tight arm (41) and butt respectively at the lateral wall that two cranks (3) are close to each other, screw rod (42) and elasticity nut (43) all set up and are supported between tight arm (41) at two, screw rod (42) wherein one end and one of them support tight arm (41) fixed connection, another be provided with the jack on supporting tight arm (41), the jack aperture is greater than the rod footpath of screw rod (42), the other end of screw rod (42) inserts in the jack, elasticity nut (43) cover is established on screw rod (42), elasticity nut (43) diameter is greater than the aperture of jack.

3. A clamp as claimed in claim 2, wherein: the two inside walls of storage tank (21) all are provided with cushion (7), the one side that storage tank (21) inside wall was kept away from in cushion (7) is provided with one section arcwall face, the arcwall face of cushion (7) and the arc lateral wall laminating of crank (3) tip.

4. A clamp as claimed in claim 3, wherein: the inside wall of storage tank (21) is provided with mounting groove (211), the one side intercommunication of base (1) is kept away from with base block (2) mounting groove (211), cushion (7) and mounting groove (211) are pegged graft and are matchd.

5. A clamp according to claim 4, wherein: two opposite lateral walls of cushion (7) are provided with constant head tank (2111), the upper and lower two sides intercommunication of constant head tank (2111) and cushion (7), two inside walls of storage tank (21) are provided with location strip (71), location strip (71) and constant head tank (2111) are pegged graft each other and are matchd.

6. A clamp as claimed in claim 1, wherein: the fixing block (6) is provided with a through hole, the through hole is communicated with two opposite side walls of the fixing block (6), a pressing strip (51) is movably arranged in the through hole, two ends of the pressing strip (51) are respectively located above the two cranks (3), a abutting bolt (52) is arranged on the surface, far away from the base (1), of the fixing block (6), and the abutting bolt (52) penetrates through the fixing block (6) to enter the through hole and abuts against the lower end of the abutting bolt (52) to abut against the pressing strip (51).

7. A clamp as claimed in claim 1, wherein: the base block (2), the fixing block (6) and the base (1) are fixed in a bolt connection mode.

8. A clamp as claimed in claim 1, wherein: expansion subassembly (4) are pressed from both sides tight piece (44), expansion piece (45) and adjusting bolt (46) by two and are constituteed, two press from both sides tight piece (44) and rotate to be connected in base block (2), two press from both sides tight piece (44) symmetry and set up, two press from both sides tight piece (44) butt respectively and keep away from one side of storage tank (21) inside wall in two cranks (3), expansion piece (45) sliding connection is on fixed block (6), the upper end of expansion piece (45) sets up to "V" font, the upper end of expansion piece (45) can insert two and press from both sides between tight piece (44) and strut two tight piece (44), adjusting bolt (46) set up on base block (2), adjusting bolt (46) pass between base block (2) and two tight piece (44) and fixed block (6) threaded connection.

Images