CN217631273U - Self-locking clamp - Google Patents

Abstract

The utility model provides a self-locking clamp, which comprises a left clamp plate and a right clamp plate which are arranged side by side, wherein the left clamp plate and the right clamp plate are connected through a bidirectional screw rod, a guide rod is arranged between the left clamp plate and the right clamp plate, and the heads of the left clamp plate and the right clamp plate are matched with a template; a ratchet and pawl mechanism is arranged between the bidirectional screw and the guide rod. The utility model discloses the beneficial effect who produces is: the bidirectional screw rotates to adjust the relative positions of the left clamping plate and the right clamping plate, and the heads of the left clamping plate and the right clamping plate apply clamping force to the template through the screw so as to clamp the beam template and the constructional column template; when the relative positions of the left clamping plate and the right clamping plate are adjusted, the spline shaft plays a role in guiding the movement of the left clamping plate and the right clamping plate; after the template is clamped, the ratchet wheel and pawl mechanism can limit and lock the rotation direction of the bidirectional screw rod, the bidirectional screw rod is prevented from rotating, the bidirectional screw rod is effectively prevented from being loosened after the clamp is clamped, and the stability of the clamp for clamping the template is ensured.

Description

Self-locking clamp

Technical Field

The utility model relates to a roof beam, constructional column template anchor clamps technical field especially indicate a from locking-type anchor clamps.

Background

When roof beam, constructional column compound die, need consolidate, adopt step by step tightly to use as roof beam, constructional column template anchor clamps among the prior art, adopt step by step tightly to press from both sides the template when tight, need adopt great strength to beat, just can realize pressing from both sides tightly of template, the operation is inconvenient. Adopt three steel pipes to press from both sides tight the roof beam template in addition, set up rectangular shape hole on the steel pipe of bottom, insert wedge bayonet lock in rectangular shape hole, realize pressing from both sides tight of roof beam template through the bayonet lock, leave the clearance between this kind of rectangular shape hole, the chucking steel pipe that the bayonet lock can not be fine, the template presss from both sides tightly insecurely, needs to insert sometimes and establishes two bayonet locks, inconvenient striking during the construction has also increased the cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a from locking-type anchor clamps has solved among the prior art roof beam, structure post template and has pressed from both sides tight operation inconvenience, presss from both sides tight insecure problem.

The technical scheme of the utility model is realized like this:

a self-locking clamp comprises a left clamp plate and a right clamp plate which are arranged side by side, wherein the left clamp plate and the right clamp plate are connected through a bidirectional screw rod, a guide rod is arranged between the left clamp plate and the right clamp plate, and the heads of the left clamp plate and the right clamp plate are matched with a template; a ratchet wheel and pawl mechanism is arranged between the bidirectional screw rod and the guide rod. The distance between the left clamping plate and the right clamping plate can be adjusted by rotating the bidirectional screw rod, so that the head parts of the left clamping plate and the right clamping plate clamp the template; and when the bidirectional screw rod rotates, the ratchet wheel and pawl mechanism locks the rotation direction of the bidirectional screw rod, so that the bidirectional screw rod is prevented from reversing, and the clamping stability of the left clamping plate and the right clamping plate is ensured.

The guide bar is a spline shaft, spline holes are formed in the middle of the left clamping plate and the middle of the right clamping plate, and the spline shaft is in sliding connection with the spline holes of the left clamping plate and the spline holes of the right clamping plate. The spline shaft, the left clamping plate and the right clamping plate cannot rotate relatively, and normal work of the ratchet wheel and pawl mechanism is guaranteed.

The ratchet wheel and pawl mechanism comprises a ratchet wheel and a pawl, the ratchet wheel is fixedly arranged in the middle of the bidirectional screw rod, the pawl is movably arranged in the middle of the spline shaft, the ratchet wheel corresponds to the pawl in position, and the pawl is matched with the ratchet wheel.

The middle of the spline shaft is provided with a pawl mounting seat, the tail of the pawl is hinged with the pawl mounting seat, and an extension spring is arranged between the pawl and the pawl mounting seat. When the bidirectional screw rotates anticlockwise, the ratchet wheel and pawl mechanism does not influence the rotation of the bidirectional screw, and when the bidirectional screw rotates clockwise, the pawl clamps the ratchet wheel under the action of the extension spring to limit the rotation of the bidirectional screw, so that the locking of the bidirectional screw is effectively guaranteed.

The afterbody of left splint and right splint is equipped with the screw hole, the both ends of two-way screw rod respectively with the screw hole threaded connection of left splint and right splint. The bidirectional screw rotates to drive the nuts at the two ends to move in opposite directions or in opposite directions, and then the left clamping plate and the right clamping plate are driven to clamp or loosen the template.

Both ends of the bidirectional screw rod are respectively provided with an end prism. An operator can apply force to the end prism to rotate the bidirectional screw, so that the left clamping plate and the right clamping plate can move.

The utility model discloses the beneficial effect who produces is: the bidirectional screw rotates to adjust the relative positions of the left clamping plate and the right clamping plate, and the heads of the left clamping plate and the right clamping plate apply clamping force to the template through the screw, so that the beam template and the constructional column template are clamped; when the relative positions of the left clamping plate and the right clamping plate are adjusted, the spline shaft plays a role in guiding the movement of the left clamping plate and the right clamping plate; after the template is clamped, the ratchet wheel and pawl mechanism can carry out limiting locking on the rotation direction of the bidirectional screw, the bidirectional screw is prevented from rotating, the bidirectional screw is further effectively prevented from being loosened after the clamp is clamped, and the stability of the clamp for clamping the template is ensured.

Drawings

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

Fig. 1 is a schematic structural view of a self-locking clamp.

Fig. 2 is a schematic diagram of the use of the self-locking clamp.

FIG. 3 is a schematic view of a ratchet-pawl engagement.

In the figure: 1-left splint, 2-right splint, 3-bidirectional screw, 31-end prism, 32-ratchet wheel, 4-spline shaft, 41-pawl mounting seat, 42-pawl, 43-extension spring and 5-template.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

Embodiment 1, as shown in fig. 1, fig. 2, a from locking-type anchor clamps, including left splint 1 and the right splint 2 of arranging side by side, left splint 1 and right splint 2 are connected through two-way screw rod 3, the afterbody of left splint 1 and right splint 2 is equipped with the screw hole respectively, and two-way screw rod 3's both ends all with screw hole threaded connection, two-way screw rod 3 rotate drive left splint 1 and the motion of right splint 2, and then realize the adjustment to left splint 1 and the 2 intervals of right splint. A guide rod is arranged between the left clamping plate 1 and the right clamping plate 2, the guide rod has a guide effect in the moving process of the left clamping plate 1 and the right clamping plate 2, the left clamping plate 1 and the right clamping plate 2 are ensured to be always arranged in parallel, and the heads of the left clamping plate 1 and the right clamping plate 2 are matched with the template 5; a ratchet wheel and pawl mechanism is arranged between the bidirectional screw rod 3 and the guide rod. Specifically, when the anchor clamps use, the two-way screw rod 3 of left splint 1 and right splint 2 afterbody is controlled the interval of left splint 1 and right splint 2, and the guide bar at left splint 1 and right splint 2 middle part leads left splint 1 and right splint 2, makes left splint 1 and right splint 2 press from both sides tightly template 5 to lock two-way screw rod 3 through ratchet pawl mechanism behind tight template 5.

Further, the guide bar is integral key shaft 4, and the middle part of left splint 1 and right splint 2 is equipped with the splined hole, integral key shaft 4's both ends respectively with the splined hole sliding connection of left splint 1 and right splint 2. Integral key shaft 4 leads to the removal of left splint 1 and right splint 2, makes left splint 1 and right splint 2 remain parallel throughout, and then guarantees left splint 1 and right splint 2 to the tight stability of clamp of template 5, and integral key shaft 4 can restrict integral key shaft 4's rotation with the splined hole cooperation simultaneously, and then guarantees ratchet pawl mechanism's normal work.

Embodiment 2, a self-locking clamp, as shown in fig. 3, the ratchet-pawl mechanism includes a ratchet 32 and a pawl 42, the ratchet 32 is fixedly disposed in the middle of the bidirectional screw 3, the pawl 42 is movably disposed in the middle of the spline shaft 4, the positions of the ratchet 32 and the pawl 42 correspond, and the pawl 42 is engaged with the ratchet 32. The middle part of the spline shaft 4 is provided with a pawl mounting seat 41, the tail part of the pawl 42 is hinged with the pawl mounting seat 41, and an extension spring 43 is arranged between the pawl 42 and the pawl mounting seat 41. In this embodiment, the ratchet 32 rotates clockwise as a locking direction, that is, when the bidirectional screw 3 rotates counterclockwise, the pawl 42 does not lock the ratchet 32, and the bidirectional screw 3 can smoothly rotate counterclockwise; when the bidirectional screw 3 rotates clockwise, the pawl 42 locks the ratchet wheel 32 under the action of the extension spring 43, so that the bidirectional screw 3 is rotated for limitation, the bidirectional screw 3 is locked, and the clamping stability of the left clamping plate 1 and the right clamping plate 2 on the template 5 is ensured.

Further, both ends of the bidirectional screw 3 are provided with end prisms 31. The middle part of the bidirectional screw 3 is provided with a middle prism 32. Specifically, the end prism 31 and the middle prism 32 are both hexagonal prisms, and when a worker rotates the bidirectional screw 3, the end prism 31 or the middle prism 32 can be tightly clamped by a wrench to rotate the bidirectional screw 3, so that the operation is convenient and fast, and the clamping of the clamp is realized.

The other structure is the same as that of embodiment 1.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A self-locking clamp is characterized by comprising a left clamp plate (1) and a right clamp plate (2) which are arranged side by side, wherein the left clamp plate (1) and the right clamp plate (2) are connected through a bidirectional screw (3), a guide rod is arranged between the left clamp plate (1) and the right clamp plate (2), and the heads of the left clamp plate (1) and the right clamp plate (2) are matched with a template (5); a ratchet and pawl mechanism is arranged between the bidirectional screw rod (3) and the guide rod.

2. The self-locking clamp according to claim 1, wherein the guide rod is a spline shaft (4), spline holes are formed in the middle parts of the left clamping plate (1) and the right clamping plate (2), and the spline shaft (4) is in sliding connection with the spline holes of the left clamping plate (1) and the right clamping plate (2).

3. The self-locking type clamp according to claim 2, wherein the ratchet-pawl mechanism comprises a ratchet wheel (32) and a pawl (42), the ratchet wheel (32) is fixedly arranged in the middle of the bidirectional screw (3), the pawl (42) is movably arranged on the spline shaft (4), the ratchet wheel (32) and the pawl (42) correspond in position, and the pawl (42) is matched with the ratchet wheel (32).

4. The self-locking clamp according to claim 3, wherein the middle part of the spline shaft (4) is provided with a pawl mounting seat (41), the tail part of the pawl (42) is hinged with the pawl mounting seat (41), and an extension spring (43) is arranged between the middle part of the pawl (42) and the pawl mounting seat (41).

5. The self-locking clamp according to any one of claims 1 to 4, wherein threaded holes are formed in the tails of the left clamp plate (1) and the right clamp plate (2), and two ends of the bidirectional screw (3) are respectively in threaded connection with the threaded holes of the left clamp plate (1) and the right clamp plate (2).

6. The self-locking clamp according to claim 5, characterised in that both ends of the bidirectional screw (3) are provided with end prisms (31).

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