Device for clamping frame

Abstract

The present invention discloses a device for clamping a frame, comprising an articulated ear seat, a main board and a locking mechanism, wherein the articulated ear seat is provided with an articulated hole; a lock tongue seat and a baffle are fixedly arranged on the bottom surface of the main board; the locking mechanism comprises a nut, a lock tongue, a spring, a screw, a limit seat and a shift fork, wherein the lock tongue is slidably assembled with the lock tongue seat, the head end of the screw is fixedly connected with the plane end of the lock tongue, the spring is located between the lock tongue and the baffle, one end of the limit seat is fixedly connected with the baffle, and a long limit groove and a short limit groove are circumferentially staggered on the circumferential surface of the other end, one end of the shift fork is connected with the lock tongue and can rotate freely relative to the lock tongue, and the other end is selectively assembled with a long limit groove or a short limit groove. The device for clamping a frame of the present application improves the efficiency of frame handling, reduces the labor intensity and labor cost of frame handling, and at the same time, avoids damage to the saplings during the handling process, and reduces the space limitation of the handling operation.

Description

Technical Field

[0001] The present invention relates to the technical field of clamps, and in particular to a device for clamping a frame. Background Art

[0002] With the development of science and technology, frame-based seedling cultivation is becoming more and more popular. It is an economical, effective and convenient new method for seedling production. At present, the transportation of the frame is carried out by pure manual transportation, or by mechanical equipment tying ropes or hanging hooks on the frame for transportation. Both methods have their own disadvantages. For manual transportation, since frame-based seedling cultivation is usually a large-scale production, and the frame is filled with cultivation soil, the volume is large and the weight is heavy, pure manual transportation requires two or more people to cooperate in operation, so the labor intensity is large, the labor cost is high, and the work efficiency is low. When mechanical equipment is used to tie ropes or hang hooks on the frame for transportation, manual bundling and hanging are required, which is inefficient and has poor reliability. At the same time, the rope needs to be adjusted to balance the frame before transportation, otherwise it is easy to cause the frame to tilt and fall, damaging the seedling. In addition, the traditional transportation method has certain requirements for the working space, and it needs to be transported from the outside to the inside in a certain order. Summary of the invention

[0003] In view of this, the object of the present invention is to provide a device for clamping a frame so as to improve the efficiency of frame transportation, reduce the labor intensity and labor cost of frame transportation, and at the same time, avoid damage to seedlings during transportation and reduce the space limitation of transportation operations.

[0004] The present invention solves the above-mentioned problem by the following technical means: a device for clamping a frame, comprising a hinged ear seat, a main board and a locking mechanism, wherein a hinge hole is provided on the hinged ear seat, and the hinged ear seat is fixedly connected to the top surface of the main board; a lock tongue seat and a baffle providing a mounting platform for the locking mechanism are fixedly arranged on the bottom surface of the main board; the locking mechanism comprises a nut, a lock tongue, a spring, a screw, a limit seat and a shift fork, the lock tongue is slidably assembled with the lock tongue seat, one end of the lock tongue is a wedge-shaped end, and the other end is a plane end, a nut mounting groove is provided on the bottom surface of the lock tongue, and the lock tongue is provided with a nut mounting groove. The head end of the screw rod slides through the baffle and is fixedly connected to the plane end of the lock tongue. The spring is located between the lock tongue and the baffle. One end of the limit seat is fixedly connected to the baffle, and a long limit groove and a short limit groove are circumferentially staggered on the circumferential surface of the other end. The shift fork includes a connecting rod body and a toggle rod body. One end of the connecting rod body passes through the limit seat and the baffle and then enters the nut mounting groove, and nuts are threadedly assembled on both sides of the connection part with the lock tongue to realize axial limitation of the connection between the shift fork and the lock tongue. The toggle rod body is optionally assembled with the long limit groove or the short limit groove.

[0005] Furthermore, a limit seat mounting threaded through hole which is threadedly connected to the limit seat is provided in the middle of the baffle.

[0006] Furthermore, screw through holes for sliding assembly with the screw are provided on both sides of the threaded through hole for mounting the limit seat.

[0007] Furthermore, a shift fork through hole for rotationally assembling with the connecting rod body is provided in the middle of the plane end of the locking tongue, the shift fork through hole is communicated with the nut mounting groove, and the nuts are arranged on both sides of the shift fork through hole.

[0008] Furthermore, screw head end connecting screw holes which are threadedly connected to the head end of the screw are provided on both sides of the fork through hole.

[0009] Furthermore, a lock tongue groove for slidingly assembling with the lock tongue is provided on the lock tongue seat.

[0010] Furthermore, slide rails are arranged on both sides of the lock tongue groove, and slide rail grooves matching and slidably assembled with the slide rails are opened on both sides of the lock tongue.

[0011] Furthermore, the main board is U-shaped.

[0012] Furthermore, the shift fork is L-shaped.

[0013] Furthermore, the main structure of the hinged ear seat is located inside the main board, and the outer dimensions of the main board match the inner frame dimensions of the frame.

[0014] Beneficial effects of the present invention:

[0015] 1. The device for clamping a frame of the present application, when used for transporting frames such as a sapling cultivation frame, is connected to an external device through a hinged ear seat and a pin shaft. By adjusting the assembly angle between the hinged ear seat and the external device, the frame can be ensured to be upright during transportation without damaging the saplings or tilting to spill the cultivation soil.

[0016] 2. The device for clamping the frame of the present application can achieve the clamping of the frame through the coordinated operation of three locking mechanisms evenly distributed in three directions; the frame can be unloaded by pulling the shift fork to drive the lock tongue to retract. During the unloading process of the frame, the shift fork is rotated so that the shift fork's shift rod cooperates with the short limit groove, and the sliding limit is achieved through the bottom of the short limit groove, so that the lock tongue can be locked in the retracted state. Compared with rope binding and other methods, the efficiency of frame clamping and transportation is greatly improved, and the labor intensity and labor cost of frame transportation are reduced.

[0017] 3. The device for clamping a frame of the present application, when clamping the frame, under the action of the vertical external force applied by the external equipment, the wedge-shaped end of the lock tongue acts on the inner wall of the frame cavity, and the lock tongue is subjected to the horizontal squeezing force, so that it slides inward relative to the lock tongue groove to avoid interfering with the downward movement of the device for clamping the frame. At this time, the spring is compressed; when the lock tongue slides down to correspond to the clamping hole of the frame, the compressed spring is freely released, pushing the wedge-shaped end of the lock tongue to lock into the clamping hole of the frame. If this can achieve the clamping of the frame, the whole process has a relatively high degree of automation, which is conducive to improving the clamping efficiency.

[0018] 4. The device for clamping the frame of the present application has a main board of a U-shaped structure with an opening on one side. During the clamping process, the saplings can be moved in horizontally from the opening, which is not affected by the height of the saplings and does not require passing through the saplings from top to bottom to clamp the frame; it is not affected by other frames during clamping, that is, it is not necessary to clamp the frames in the order in which they are arranged, and the frames placed inside can be directly clamped by leaping over the frames placed outside, thereby effectively reducing the space limitations of the handling operation.

[0019] In summary, the device for clamping the frame of the present application has the characteristics of simple structure, quick operation, high efficiency and reliability, and can solve the problem of low efficiency and high labor intensity of purely manual handling of the frame, and can also solve the disadvantages of poor balance and limited operating space when mechanical equipment is used to carry the frame by tying ropes or hanging hooks on the frame. It can be widely used in the field of handling frames such as seedling cultivation frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is an exploded schematic diagram of a preferred embodiment of the present invention;

[0022] Figure 2 An enlarged bottom view of an assembly of a preferred embodiment of the present invention;

[0023] Figure 3 It is an enlarged schematic diagram of a mainboard of a preferred embodiment of the present invention;

[0024] Figure 4 It is an enlarged schematic diagram of a lock tongue according to a preferred embodiment of the present invention;

[0025] Figure 5 It is an enlarged schematic diagram of a limiting seat according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. Take the frame of a tree seedling cultivation frame as an example.

[0027] like Figure 1-5As shown, the device for clamping the frame in this embodiment includes a hinged ear seat 1, a main board 2 and a locking mechanism, and the locking mechanism includes a nut 3, a locking tongue 4, a spring 5, a screw 6, a limit seat 7 and a shift fork 8.

[0028] like Figure 1 As shown, the hinged ear seat 1 is provided with two sets of hinge holes 101, which can be connected to mechanical equipment through a pin passing through the hinge holes, and the assembly angle between the mechanical equipment and the hinged ear seat can be adjusted to ensure that the frame remains upright during transportation. The hinged ear seat 1 can be fixedly connected to the main board 2 by welding or assembly. The main structure of the hinged ear seat 1 is inside the main board 2, which can reduce the volume of the device for clamping the frame, reduce space restrictions during clamping, and not interfere with other frames.

[0029] like Figure 2 and Figure 3 As shown, the main board 2 is a U-shaped structure, three sides are closed and one side is open. For the convenience of description, the rear side opening of the main board is defined; the outer dimensions of the main board 2 match the inner frame dimensions of the frame, and the inner cavity provides space for the saplings to ensure that the frame is not affected by the height of the saplings when clamping the frame. The opening on one side ensures that the frame does not need to be clamped from top to bottom through the saplings, and the frame can be clamped from the outside to the inside from any direction of the saplings. The bottom surface of the main board 2 is fixedly provided with a lock tongue seat 9 and a baffle 10 that provide a mounting platform for the locking mechanism. Preferably, in order to improve the reliability of the frame clamping, the front side, left side and right side bottom surfaces of the main board are integrally provided with a lock tongue seat 9 and a baffle 10, so that the frame can be locked and fixed by three sets of locking mechanisms on the front side, left side and right side. The lock tongue seat is provided with a lock tongue groove 901, and the middle of the baffle is provided with a threaded through hole 1001 for the limited seat installation, and screw through holes 1002 are provided on both sides of the threaded through hole for the limited seat installation.

[0030] like Figure 2 and Figure 4 As shown, the head end of the lock tongue 4 is a wedge-shaped end 401, the tail end is a flat end 402, and a nut mounting groove 405 is provided on the bottom surface of the lock tongue. The lock tongue 4 is slidably assembled with the lock tongue groove 901. Preferably, as shown in FIG. Figure 3 As shown, slide rails 902 are provided on both sides of the lock tongue groove. Figure 4As shown, slide rail grooves 406 matching with the slide rails for sliding assembly are provided on both sides of the lock tongue; the slide rails and the slide rail grooves are matched to guide the sliding of the lock tongue relative to the lock tongue groove. A fork through hole 403 connected to the nut mounting groove 405 is provided at the center of the plane end of the lock tongue, and screw holes 402 for connecting the head end of the screw are provided on both sides of the fork through hole. The head end of the screw passes through the screw through hole and is threadedly connected with the screw head end connecting screw hole, so that the lock tongue and the screw are fixedly connected. The spring 5 is sleeved on the screw 6, one end of the spring 5 contacts the plane end of the lock tongue, and the other end contacts the baffle 10. When the lock tongue 4 slides inward or outward, the spring 5 contracts or recovers its deformation; the screw 6 moves together with the lock tongue 5, and the screw 6 and the screw through hole 1002 slide relatively; the close fit between the nut of the screw and the baffle can limit the extension limit of the lock tongue.

[0031] like Figure 5 As shown, the stopper 7 is a stepped cylindrical structure, the small diameter end of which is threadedly connected to the stopper installation threaded through hole 1001, and the circumferential surface of the large diameter end is provided with a long stopper groove 701 and a short stopper groove 702 staggered in the circumferential direction, preferably, the long stopper groove and the short stopper groove are staggered 180°. After installation, the long stopper groove is placed directly below, and the short stopper groove is placed directly above.

[0032] like Figure 1 and Figure 2 As shown, the shift fork is an L-shaped structure consisting of a connecting rod body 801 and a toggle rod body 802. One end of the shift fork connecting rod body passes through the limit seat 7 and the shift fork through hole 403 in sequence and then enters the nut installation groove. Nuts 3 are threadedly assembled on both sides of the shift fork through hole 403 to achieve axial limit of the connection between the shift fork 8 and the lock tongue 4. This assembly method ensures that the shift fork 8 can rotate freely and can drive the lock tongue 4 to move. Preferably, two nuts 3 are installed in parallel on both sides of the shift fork through hole 403 to improve the reliability of the fixed connection limit between the shift fork and the lock tongue. The toggle rod body 802 of the shift fork is assembled with either the long limit groove 701 or the end limit groove 702. The sliding limit of the toggle rod body and the lock tongue extending outward together can be achieved through the bottom of the long limit groove. During the process of retracting or extending the lock tongue, the shift fork's toggle rod 802 slides relative to the long limit groove 701. When the lock tongue 4 is retracted into place, the shift fork 8 is rotated to make the shift fork's toggle rod 802 cooperate with the short limit groove 702, and the sliding limit is achieved through the bottom of the short limit groove, so that the lock tongue can be kept in the retracted state; when the lock tongue needs to be released, the shift fork is rotated to make the shift fork's toggle rod cooperate with the long limit groove, and the lock tongue can be automatically extended by using the elastic force of the spring.

[0033] When in use, the device for clamping the frame is matched and sleeved in the inner cavity of the frame. Under the vertical external force applied by the external mechanical equipment, the wedge-shaped end of the lock tongue 4 acts on the inner cavity wall of the frame, and the lock tongue 4 is subjected to horizontal extrusion force, so that it slides relative to the lock tongue groove 901 and retracts to avoid interfering with the downward movement of the device for clamping the frame. At this time, the spring 5 is compressed; when the lock tongue slides down to correspond to the clamping hole of the frame, the compressed spring 5 is released freely, pushing the wedge-shaped end 401 of the lock tongue to lock into the clamping hole of the frame. In this process, the working principles of the three sets of locking mechanisms are consistent, so that the frame and the clamping mechanism are locked. After the external equipment transports the frame to the destination, the shift fork is pulled to drive the lock tongue to retract, so that the wedge-shaped end of the lock tongue is separated from the clamping hole of the frame, so that the clamping mechanism and the frame are separated. To improve the convenience of frame separation, the shift fork is rotated so that the shift fork's shift rod cooperates with the short limit groove, and the sliding limit is achieved through the bottom of the short limit groove, so that the lock tongue can be kept in the retracted state; when the lock tongue needs to be released, the shift fork is rotated so that the shift fork's shift rod cooperates with the long limit groove, and the elastic force of the spring is used to automatically extend the lock tongue.

[0034] When the frame is clamped, the lock tongue 4 is retracted and the spring 5 is compressed. After the frame is unloaded, the lock tongue is extended and the spring is released freely.

[0035] When the frame is clamped, the lock tongue 4 is retracted, and the screw rod 6 moves inward together. When the frame is unloaded, the lock tongue is extended, and the nut of the screw rod 6 is pressed against the baffle 10, limiting the lock tongue from continuing to move outward.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A device for clamping a frame, characterized in that: The invention comprises an articulated ear seat (1), a main board (2) and a locking mechanism, wherein the articulated ear seat is provided with an articulated hole (101), and the articulated ear seat is fixedly connected to the top surface of the main board; the bottom surface of the main board is fixedly provided with a lock tongue seat (9) and a baffle (10) which provide a mounting platform for the locking mechanism; the locking mechanism comprises a nut (3), a lock tongue (4), a spring (5), a screw rod (6), a limit seat (7) and a shift fork (8); the lock tongue is slidably assembled with the lock tongue seat, one end of the lock tongue is a wedge-shaped end (401), and the other end is a plane end (402); a nut mounting groove (405) is provided on the bottom surface of the lock tongue; the head end of the screw rod (6) slides through the baffle and is engaged with the plane of the lock tongue. The ends are fixedly connected, the spring is located between the lock tongue and the baffle, one end of the limit seat (7) is fixedly connected to the baffle, and a long limit groove (701) and a short limit groove (702) are circumferentially staggered on the circumferential surface of the other end, the shift fork (8) comprises a connecting rod body (801) and a toggle rod body (802), one end of the connecting rod body (801) passes through the limit seat (7) and the baffle (10) and then enters the nut installation groove (405), and nuts (3) are threadedly assembled on both sides of the connection part with the lock tongue to realize axial limit of the connection between the shift fork (8) and the lock tongue (4), and the toggle rod body is assembled with either the long limit groove (701) or the short limit groove (702); A limit seat mounting threaded through hole (1001) threadedly connected to the limit seat (7) is provided in the middle of the baffle (10); Screw through holes (1002) for sliding assembly with the screw are provided on both sides of the threaded through hole (1001) for mounting the limit seat; A shift fork through hole (403) for rotationally assembling with the connecting rod body (801) is provided in the middle of the plane end of the locking tongue (4), the shift fork through hole (403) being communicated with the nut mounting groove (405), and the nuts are arranged on both sides of the shift fork through hole; Screw head end connecting screw holes (404) which are threadedly connected to the head end of the screw rod (6) are provided on both sides of the shift fork through hole (403); The lock tongue seat (9) is provided with a lock tongue groove (901) for slidingly assembling with the lock tongue; Slide rails (902) are arranged on both sides of the lock tongue groove (901), and slide rail grooves (406) matching and slidably assembled with the slide rails are opened on both sides of the lock tongue (4).

2. The device for clamping a frame according to claim 1, characterized in that: The main board (2) is U-shaped.

3. The device for clamping a frame according to claim 1, characterized in that: The shift fork (8) is L-shaped.

4. The device for clamping a frame according to claim 1, characterized in that: The main structure of the hinged ear seat (1) is located inside the main board (2), and the outer dimensions of the main board (2) match the inner frame dimensions of the frame.

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