Lifting tool for civil air defense door

Abstract

The utility model discloses a hoisting tool for a civil air defense door, which belongs to the technical field of hoisting tools and comprises a cross-shaped hanging bracket provided with a sliding groove, a telescopic rod slidably arranged in the sliding groove of the cross-shaped hanging bracket, a telescopic adjusting mechanism used for controlling the telescopic amplitude of the telescopic rod, an elastic connecting piece fixedly arranged at the tail end of the telescopic rod, and a lifting mechanism used for lifting the telescopic rod. An adjustable clamp is fixedly connected to the base and comprises an inner threaded cylinder, a distance adjusting screw rod is connected to the inner threaded cylinder in a threaded mode, and a clamping plate is rotationally connected to the bottom of the distance adjusting screw rod. According to the technical key points, the arranged cross-shaped hanging bracket can be matched with the telescopic rods and the adjustable clamps to play a clamping and fixing role in the long edge direction and the short edge direction of the civil air defense door, the hanging stability is improved, and when the hanging bracket is suitable for civil air defense doors of different sizes, the hanging bracket is suitable for door body sizes of different lengths and widths by changing the distance between the adjustable clamps; the distance between the clamping plate and the internal thread cylinder is changed through the distance adjusting screw so as to be suitable for door bodies with different thicknesses.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hoisting tool technical field, concretely is a kind of hoisting tool for civil air defence door. BACKGROUND

[0002] Hoisting tool is the key equipment used in hoisting operation, it involves multiple fields and industries, has extensive application, usually refers to the combination of special equipment and tool for hoisting, carrying and positioning object.It is usually composed of lifting appliance, connecting piece, support structure and other parts, can realize the stable, safe, efficient hoisting of object.As civil air defence door is usually heavy, hoisting tool is needed to cooperate work in production and processing and subsequent installation process.

[0003] The utility model discloses a kind of hoisting mechanism for civil air defence door production, the connecting sleeve and connecting seat of the utility model can adjust the distance between two groups of telescopic sleeves, make hoisting mechanism for civil air defence door production fit different specifications of civil air defence door, improve applicability, rotating extrusion rod can extrude first extrusion wheel, first extrusion wheel extrudes second extrusion wheel by moving rod, so that rotating anti-unhooking can be tightly buckled in the end surface of civil air defence door, realize rotating anti-unhooking automatic buckling, prevent civil air defence door from slipping.The above hoisting mechanism is provided with two groups of lifting clamps, but the working plane of each group is parallel to each other, i.e. the clamping direction of both is same, only can simultaneously clamp the long side direction or short side direction of door body, so that the other side of door body lacks restraint measure, and is easy to slip from one direction in hoisting process, in addition, although the above hoisting mechanism can adjust the distance between two groups of telescopic sleeves by connecting sleeve and connecting seat to fit different specifications of civil air defence door, but the clamping spacing of its anti-unhooking cannot be changed, i.e. only can clamp civil air defence door of specific thickness, so its application range is not extensive, therefore, aiming at the above problem, a kind of hoisting tool for civil air defence door is presented. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem to provide a kind of hoisting tool for civil air defence door, the hoisting tool is provided with cross hanger, it can cooperate telescopic rod and adjustable clamp and play the clamping fixed role in the long side and short side direction of civil air defence door, so that civil air defence door cannot slide laterally in hoisting process, improve the stability of hoisting, and when applicable to civil air defence door of different sizes, the telescopic degree of telescopic rod is adjusted with telescopic adjusting mechanism, to change the spacing between adjustable clamp further, to be applicable to the door body size of different length and width, in adjustable clamp, the spacing between clamping plate and internal thread cylinder is changed with gauge screw, to be applicable to the door body of different thickness, solve the technical problem that hoisting tool in prior art is difficult to clamp the long side and short side of door body simultaneously, and then easy to slip from one direction in hoisting process, and difficult to adjust clamping size in length, width and thickness simultaneously, so that the application range is not extensive.

[0005] The technical scheme adopted by the embodiment of the application to solve the technical problem is:

[0006] A lifting tool for a civil air defense door, comprising a cross lifting frame, four sliding grooves are formed in the cross lifting frame, a telescopic rod is slidingly arranged in the sliding groove of the cross lifting frame, a reinforcing rib is fixedly arranged on the telescopic rod, a telescopic adjusting mechanism is installed on the cross lifting frame to control the telescopic amplitude of the telescopic rod, and an elastic connecting piece is fixedly arranged at the end of the telescopic rod and is fixedly connected with an adjustable clamp, wherein the adjustable clamp comprises an internally threaded cylinder, a distance adjusting screw is threadedly connected with the internally threaded cylinder, and a clamping plate is rotatably connected to the bottom of the distance adjusting screw.

[0007] Through the above structure, the cross lifting frame can cooperate with the telescopic rod and the adjustable clamp to clamp and fix the civil air defense door in the long side and short side directions, so that the civil air defense door cannot slide laterally during lifting, and the stability of lifting is improved. When the lifting tool is applied to civil air defense doors of different sizes, the telescopic adjusting mechanism is used to adjust the telescopic degree of the telescopic rod, and then the distance between the adjustable clamps is changed to adapt to door body sizes of different lengths and widths. In the adjustable clamp, the distance between the clamping plate and the internally threaded cylinder is changed by the distance adjusting screw to adapt to door bodies of different thicknesses.

[0008] In a possible implementation manner, two limiting sheets are fixedly arranged at the bottom of the distance adjusting screw, and no thread is formed on the distance adjusting screw between the two limiting sheets. The clamping plate is arranged between the two limiting sheets and is rotatably connected with the distance adjusting screw.

[0009] Through the above structure, the two limiting sheets can limit the clamping plate at the bottom end of the distance adjusting screw, and provide a necessary structural basis for the rotatable connection between the distance adjusting screw and the clamping plate, so that the clamping plate does not need to rotate when the distance adjusting screw rotates.

[0010] In a possible implementation manner, guide strips are fixedly arranged on both sides of the clamping plate, guide groove plates are fixedly arranged on both sides of the internally threaded cylinder, the guide strips are slidingly arranged in the guide groove plates, and an adjusting disc is fixedly connected to the top end of the distance adjusting screw.

[0011] Through the above structure, the guide strips can slide in the guide groove plates to constrain the clamping plate to move up and down along with the distance adjusting screw and not to rotate along with the distance adjusting screw, thereby facilitating use.

[0012] In a possible implementation manner, the elastic connecting piece comprises a connecting outer cylinder fixedly connected to the end of the telescopic rod, a sliding shaft is slidingly arranged in the connecting outer cylinder, one end of the sliding shaft is fixedly connected with the internally threaded cylinder, the other end is fixedly connected with an axle end sheet, and a clamping spring is arranged outside the sliding shaft and sleeved between the axle end sheet and the connecting outer cylinder.

[0013] Through the above structural form, when the telescopic adjusting mechanism drives the telescopic rod to retract, the sliding shaft is pushed to slide outward, and the clamping spring is in a compressed state, which can avoid excessive clamping force from causing serious wear of the door body, and can improve the anti-loosening ability through the clamping spring to ensure the stability of the clamping effect.

[0014] In a possible implementation, two symmetrical anti-rotation grooves are arranged on the sliding shaft, and two anti-rotation convex edges are fixedly arranged on the corresponding positions of the connecting outer cylinder, and the anti-rotation grooves and the anti-rotation convex edges are matched with each other.

[0015] Through the above structural form, the anti-rotation grooves and the anti-rotation convex edges can ensure that the sliding shaft does not rotate during forward and backward sliding, so that the normal use is not affected by rotation.

[0016] In a possible implementation, the telescopic adjusting mechanism comprises a mounting plate fixedly arranged on the cross hanger, a transmission screw rod rotatably arranged on the mounting plate, and an adjusting hand wheel fixedly connected to the end of the transmission screw rod.

[0017] Through the above structural form, the adjusting hand wheel drives the transmission screw rod to rotate, and then drives the sliding table to slide forward and backward, so as to drive the telescopic rod fixedly connected to the sliding table to retract or extend as required.

[0018] In a possible implementation, a lifting connecting piece is fixedly arranged at the center of the upper end face of the cross hanger, and the lifting connecting piece comprises a force equalizing plate fixedly connected to the cross hanger, a connecting shaft fixedly connected to the force equalizing plate, and a lifting hook fixedly connected to the connecting shaft.

[0019] Through the above structural form, the force equalizing plate can increase the force transmission area to avoid local deformation of the cross hanger caused by stress concentration, so as to provide a necessary structural basis for lifting and transporting the whole tooling and the civil air defense door.

[0020] In a possible implementation, a rubber pad layer is attached to the upper end face of the clamping plate, and a stiffening plate is fixedly arranged on the lower end face of the clamping plate.

[0021] Through the above structural form, the rubber pad layer can enhance the friction between the clamping plate and the civil air defense door, thereby improving the fixing effect of the tooling, and the stiffening plate can improve the strength of the clamping plate as a whole to avoid bending after long-term stress.

[0022] In summary, the utility model has the following beneficial technical effects:

[0023] The cross-shaped lifting hanger can cooperate with the telescopic rod and the adjustable clamp to clamp and fix the air defense door in the long side and short side directions, so that the air defense door cannot slide laterally during lifting, and the stability and safety of lifting are improved.

[0024] In addition, when the lifting tool needs to be suitable for air defense doors of different sizes, the telescopic degree of the telescopic rod is adjusted by the telescopic adjusting mechanism, and then the spacing between the adjustable clamps is changed to be suitable for door body sizes of different lengths and widths. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application. In the drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0027] Figure 2 It is a schematic diagram of the local structure of the present application;

[0028] Figure 3 It is a schematic diagram of the clamping structure of the present application;

[0029] Figure 4 It is a schematic diagram of the elastic connecting piece structure of the present application.

[0030] In the drawings: 1, cross-shaped lifting hanger; 2, telescopic rod; 21, reinforcing rib; 3, telescopic adjusting mechanism; 31, mounting piece; 32, transmission screw; 33, sliding table; 34, adjusting hand wheel; 4, elastic connecting piece; 41, connecting outer cylinder; 411, anti-rotation rib; 42, sliding shaft; 421, anti-rotation groove; 43, shaft end piece; 44, clamping spring; 5, adjustable clamp; 51, inner threaded cylinder; 52, distance adjusting screw; 53, clamping plate; 531, rubber pad; 532, stiffener; 54, limiting piece; 55, guide strip; 56, guide groove plate; 57, adjusting disc; 6, lifting connecting piece; 61, force equalizing plate; 62, connecting shaft; 63, lifting hook. DETAILED DESCRIPTION

[0031] The technical solution in the embodiments of the present application is to solve the problems in the above background art, and the general idea is as follows:

[0032] For example, Figure 1 - Figure 3As shown, the embodiment provides a lifting tool for civil air defense door, which comprises a cross lifting frame 1, four grooves are formed on the cross lifting frame 1, an extension rod 2 is slidably arranged in the groove of the cross lifting frame 1, and a reinforcing rib 21 is fixedly arranged on the extension rod 2, an extension adjusting mechanism 3 is installed on the cross lifting frame 1 to control the extension amplitude of the extension rod 2, and an elastic connecting piece 4 is fixedly arranged at the end of the extension rod 2, and an adjustable clamp 5 is fixedly connected to the elastic connecting piece 4, wherein the adjustable clamp 5 comprises an internal thread cylinder 51, a pitch adjusting screw 52 is threadedly connected to the internal thread cylinder 51, and a clamping plate 53 is rotatably connected to the bottom of the pitch adjusting screw 52. Through the above structure, the cross lifting frame 1 can cooperate with the extension rod 2 and the adjustable clamp 5 to clamp and fix the civil air defense door in the long side and short side directions, so that the civil air defense door cannot slide laterally during lifting, and the stability of lifting is improved. When the civil air defense door of different sizes is applied, the extension degree of the extension rod 2 is adjusted by the extension adjusting mechanism 3, and then the distance between the adjustable clamps 5 is changed to adapt to the door body size of different length and width. In the adjustable clamp 5, the distance between the clamping plate 53 and the internal thread cylinder 51 is changed by the pitch adjusting screw 52 to adapt to the door body of different thickness.

[0033] As shown in the figure, Figure 3 The bottom of the pitch adjusting screw 52 is fixedly provided with two limiting pieces 54, and the pitch adjusting screw 52 between the two limiting pieces 54 is not provided with threads, the clamping plate 53 is arranged between the two limiting pieces 54 and is rotatably connected with the pitch adjusting screw 52. Through the above structure, the two limiting pieces 54 can limit the clamping plate 53 at the bottom end of the pitch adjusting screw 52, and provide the necessary structural basis for the rotational connection of the pitch adjusting screw 52 and the clamping plate 53, so that the clamping plate 53 does not need to rotate when the pitch adjusting screw 52 rotates.

[0034] In addition, guide strips 55 are fixedly arranged on both sides of the clamping plate 53, guide groove plates 56 are fixedly arranged on both sides of the internal thread cylinder 51, the guide strips 55 are slidably arranged in the guide groove plates 56, and an adjusting disc 57 is fixedly connected to the top end of the pitch adjusting screw 52. Through the above structure, the guide strips 55 can be slid in the guide groove plates 56 to constrain the clamping plate 53 to move up and down with the pitch adjusting screw 52 without rotating, which is convenient for use.

[0035] As shown in the figure, Figure 3As shown, the elastic connecting piece 4 includes a connecting outer cylinder 41 fixedly connected at the end of the telescopic rod 2, a sliding shaft 42 is slidingly arranged in the connecting outer cylinder 41, one end of the sliding shaft 42 is fixedly connected with an inner threaded cylinder 51, the other end is fixedly connected with a shaft end piece 43, and the shaft end piece 43 is provided with a clamping spring 44 sleeved on the outside of the sliding shaft 42 between the connecting outer cylinder 41, through the above structure, when the telescopic adjusting mechanism 3 drives the telescopic rod 2 to retract to clamp the civil air defense door, the sliding shaft 42 will be pushed to slide outward, and the clamping spring 44 will be in a compressed state, this structure can avoid excessive clamping force causing serious door body wear, and can improve the anti-looseness ability through the clamping spring 44 to ensure the stability of the clamping effect.

[0036] As shown in the figure, Figure 4 two symmetrical anti-rotation grooves 421 are formed on the sliding shaft 42, and two anti-rotation ribs 411 are fixedly arranged on the connecting outer cylinder 41 in a corresponding position, the anti-rotation grooves 421 and the anti-rotation ribs 411 are matched with each other, through the above structure, the combination of the anti-rotation grooves 421 and the anti-rotation ribs 411 can ensure that the sliding shaft 42 will not rotate during forward and backward sliding, so that it will not affect normal use due to rotation.

[0037] As shown in the figure, Figure 3 the telescopic adjusting mechanism 3 includes a mounting piece 31 fixedly arranged on the cross hanger 1, a transmission screw rod 32 is rotatably arranged on the mounting piece 31, an adjusting hand wheel 34 is fixedly connected at the end of the transmission screw rod 32, a slide table 33 is fixedly arranged on the reinforcing rib 21, and the transmission screw rod 32 is threadedly connected with the slide table 33, through the above structure, the transmission screw rod 32 is driven to rotate by the adjusting hand wheel 34, and then the slide table 33 is driven to slide forward and backward, so that the telescopic rod 2 fixedly connected with the slide table 33 can be telescoped as required.

[0038] As shown in the figure, Figure 1 the cross hanger 1 is fixedly arranged with a lifting connecting piece 6 at the center of the upper end surface, the lifting connecting piece 6 includes a uniform force plate 61 fixedly connected with the cross hanger 1, a connecting shaft 62 is fixedly connected with the uniform force plate 61, and a lifting hook 63 is fixedly connected with the connecting shaft 62, through the above structure, the necessary structural basis for lifting and transporting the whole device and the civil air defense door is provided, and the uniform force plate 61 can increase the force transmission area to avoid local deformation of the cross hanger 1 caused by stress concentration.

[0039] As shown in the figure, Figure 3 a rubber pad layer 531 is attached to the upper end surface of the clamping plate 53, and a stiffening plate 532 is fixedly arranged on the lower end surface of the clamping plate 53, through the above structure, the rubber pad layer 531 can enhance the friction between the clamping plate 53 and the civil air defense door, thereby improving the fixing effect of the tool, and the stiffening plate 532 can improve the overall strength of the clamping plate 53 to avoid bending after long-term stress.

[0040] The use principle and use process of the utility model:

[0041] It can cooperate with telescopic rod 2 and adjustable clamp 5 in the long side and short side direction of the civil air defense door and play the clamping and fixing role, so that the civil air defense door cannot slide laterally in the hoisting process, improves the stability and safety of hoisting, and the specific performance is that the adjusting hand wheel 34 drives the transmission screw rod 32 to rotate, and then drives the sliding table 33 to slide forward and backward, realizes the telescopic rod 2 fixedly connected with the driving and sliding table 33 telescopic according to the requirement, so that it can clamp the civil air defense door in the length and width direction.

[0042] When the hoisting tool needs to be applicable to civil air defense doors of different sizes, the telescopic adjusting mechanism 3 is used to adjust the telescopic degree of the telescopic rod 2, and then the spacing between the adjustable clamps 5 is changed, so as to be applicable to the door body size of different length and width, and in the adjustable clamp 5, the distance between the clamping plate 53 and the internal thread cylinder 51 is changed by the distance adjusting screw 52, so as to be applicable to the door body of different thickness.

[0043] Among them, the guide strip 55 can slide in the guide groove plate 56, so that the clamping plate 53 can only move up and down with the distance adjusting screw 52 and cannot rotate with it, and then it is convenient to use, and it will not rotate with the rotation of the distance adjusting screw 52, which will affect the normal use.

[0044] In addition, when the telescopic adjusting mechanism 3 drives the telescopic rod 2 to retract to clamp the civil air defense door, the sliding shaft 42 in the elastic connecting piece 4 will slide outward under the action of the thrust, and the clamping spring 44 will be in compression state under the action, and this kind of structure can avoid that the clamping force is too large and causes serious wear of the door body, and also can improve the anti-looseness ability through the clamping spring 44, and ensure the stability of the clamping action.

[0045] Finally, it should be pointed out that: obviously, the above examples are only examples for clearly explaining the utility model, and not the limitation of the implementation mode. For ordinary skilled person in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. The obvious changes or changes derived therefrom are still within the protection scope of the utility model.

Claims

1. A lifting tool for a civil defense door, characterized in that, The utility model relates to a cross hanger (1) is provided with four grooves on it, a telescopic rod (2) is arranged in the groove, a telescopic adjusting mechanism (3) is arranged on the cross hanger (1) to control the telescopic range of the telescopic rod (2), an elastic connecting piece (4) is arranged at the end of the telescopic rod (2), and an adjustable clamp (5) is connected to the elastic connecting piece (4). The adjustable clamp (5) comprises an inner threaded cylinder (51), a distance adjusting screw (52) is screwed in the inner threaded cylinder (51), and a clamping plate (53) is rotatably connected to the bottom of the distance adjusting screw (52). The distance adjusting screw (52) is provided with two limiting pieces (54) at the bottom, no thread is arranged on the distance adjusting screw (52) between the two limiting pieces (54), the clamping plate (53) is arranged between the two limiting pieces (54) and is rotatably connected to the distance adjusting screw (52). The clamping plate (53) is provided with guide strips (55) on both sides, the inner threaded cylinder (51) is provided with guide groove plates (56) on both sides, the guide strips (55) are slidably arranged in the guide groove plates (56), and the distance adjusting screw (52) is fixedly connected with an adjusting disc (57) at the top. The elastic connecting piece (4) comprises a connecting outer cylinder (41) fixedly connected to the end of the telescopic rod (2), a sliding shaft (42) is slidably arranged in the connecting outer cylinder (41), one end of the sliding shaft (42) is fixedly connected with the inner threaded cylinder (51), the other end is fixedly connected with a shaft end piece (43), and the shaft end piece (43) is provided with a clamping spring (44) sleeved on the sliding shaft (42). The sliding shaft (42) is provided with two symmetrical anti-rotation grooves (421), and the connecting outer cylinder (41) is provided with two anti-rotation protrusions (411) at the corresponding positions.

2. The lifting tool according to claim 1, characterized in that: The telescopic adjusting mechanism (3) comprises a mounting piece (31) fixedly arranged on the cross hanger (1), a transmission screw rod (32) is rotatably arranged on the mounting piece (31), an adjusting hand wheel (34) is fixedly connected to the end of the transmission screw rod (32), a slide table (33) is fixedly arranged on the reinforcing protrusion (21), and the transmission screw rod (32) is screw-connected with the slide table (33).

3. The lifting tool according to claim 1, characterized in that: The cross hanger (1) is provided with a lifting connecting piece (6) fixedly arranged at the center of the upper end face, the lifting connecting piece (6) comprises a uniform force plate (61) fixedly connected with the cross hanger (1), a connecting shaft (62) is fixedly connected to the uniform force plate (61), and a lifting hook (63) is fixedly connected to the connecting shaft (62).

4. The lifting tool according to claim 1, characterized in that: A rubber pad (531) is arranged on the upper end face of the clamping plate (53), and a reinforcing plate (532) is fixedly arranged on the lower end face of the clamping plate (53).

5. A lifting tool for a civil defense door according to claim 4, characterized in that: ​ 6. The lifting tool according to claim 1, characterized in that: ​ 7. The lifting tool according to claim 1, characterized in that: ​ 8. The lifting tool according to claim 1, characterized in that: ​

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