Cylinder part lifting appliance

Abstract

The utility model provides a barrel lifting appliance which comprises a left supporting arm, a left connecting arm, a lower connecting piece, a lifting hook, an upper connecting piece, a right connecting arm and a right supporting arm. The tail parts of the left and right supporting arms are hinged with the upper connecting piece, and the middle parts are hinged with the left and right connecting arms; one ends of the left and right connecting arms are hinged with the left and right supporting arms, and the other ends are hinged with the lower connecting piece; the lifting hook penetrates into a central hole of the upper connecting piece, and the upper connecting piece moves back and forth on the lifting hook; the lower connecting piece penetrates through the small-diameter part of the tail part of the lifting hook; and the lifting hook rotates in a central hole of the lower connecting piece. And the push-and-screw lifting appliance is in a lifting state, and the screw-and-pull lifting appliance is in a withdrawing state. The working procedures of machining hoisting holes and installing hoisting screws can be omitted; and the procedure of welding the lifting lug at the corresponding position of the cylinder part can be omitted, and the problems that the appearance size of the cylinder part is increased, and the lifting lug is deformed during welding and cutting off are solved.

Description

Technical Field

[0001] This invention belongs to the technical field of lifting auxiliary equipment, and particularly relates to a cylindrical lifting device. Background Technology

[0002] Many pieces of equipment contain cylindrical parts, and large cylindrical parts require hoisting during the manufacturing, installation, and transportation stages. Currently, there are generally two hoisting methods used:

[0003] Machining lifting holes on cylindrical parts not only requires an extra step, but also necessitates the use of specialized eye bolts.

[0004] Welding lifting lugs to the corresponding positions on cylindrical parts not only increases the overall size of the parts but also causes deformation; sometimes, the lugs need to be removed after installation. This process increases the workload of workers and may even increase the subsequent straightening process for cylindrical parts, resulting in unnecessary waste.

[0005] In view of the shortcomings of existing technology, there is an urgent need to develop a lifting tool that can make lifting cylindrical parts convenient and simple, without causing additional deformation of the cylindrical parts or adding unnecessary procedures. Summary of the Invention

[0006] The purpose of this invention is to...

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0008] A cylindrical lifting device, the cylindrical lifting device comprising a left support arm 1, a left connecting arm 3, a lower connecting member 4, a hook 5, an upper connecting member 6, a right connecting arm 7, and a right support arm 8;

[0009] The tail of the left support arm 1 and the tail of the right support arm 8 are respectively hinged to the upper connecting member 6, the middle part of the left support arm 1 is hinged to the left connecting arm 3, and the middle part of the right support arm 8 is hinged to the right connecting arm 7.

[0010] One end of the left connecting arm 3 is hinged to the left support arm 1, one end of the right connecting arm 7 is hinged to the right support arm 8, and the other ends of the left connecting arm 3 and the right connecting arm 7 are respectively hinged to the lower connecting member 4.

[0011] The hook 5 is inserted into the center hole of the upper connector 6, and the upper connector 6 moves back and forth on the hook 5;

[0012] The lower connector 4 is inserted into the small diameter of the tail of the hook 5, and the hook 5 rotates in the central hole of the lower connector 4.

[0013] Furthermore, the cylindrical lifting device also includes a pin 2;

[0014] Pins are installed at all hinges.

[0015] Furthermore, the hook 5 includes a hook rod 51, a positioning pin 52, and a hook tail end 53;

[0016] The locating pin 52 is screwed onto the hook rod 51, or welded onto the hook rod 51.

[0017] Furthermore, the upper connecting member 6 is provided with an inlet groove E, which is used to allow the positioning pin 52 to enter the inlet groove E when the hook 5 moves, and to prevent the upper connecting member 6 from moving on the hook 5 when the cylindrical part is in the hoisting state.

[0018] Furthermore, the dimension B of any connecting arm is greater than or equal to the distance A between the two hinge points on the hinged support arm.

[0019] Furthermore, the size D of the locating pin on the hook is less than or equal to the size E of the guide groove of the upper connector.

[0020] Furthermore, when the two support arms are in the retracted state, the maximum dimension C between the two support arms is smaller than the opening dimension W of the cylindrical part.

[0021] The beneficial effects of this utility model are:

[0022] The cylindrical lifting tool provided by this utility model can be easily inserted directly into the small opening W hole of the cylindrical part, and can be directly lifted after being opened, eliminating the process of processing lifting holes and installing lifting screws;

[0023] The present invention relates to a cylindrical lifting tool that eliminates the process of welding lifting lugs at corresponding positions on cylindrical parts. This not only prevents the increase in the external dimensions of cylindrical parts, but also eliminates the deformation of cylindrical parts during welding and cutting of lifting lugs, and even the increase in subsequent straightening processes for cylindrical parts, which would cause unnecessary waste.

[0024] The lifting device involved in this utility model has the characteristics of simple structure and high reliability of lifting cylindrical parts. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of a cylindrical lifting device in the lifting state according to this utility model;

[0026] Figure 2 This is a structural schematic diagram of a cylindrical lifting device in its retracted state according to this utility model;

[0027] Figure 3 This is a structural schematic diagram of a cylindrical lifting hook according to the present invention;

[0028] Figure 4 This is a structural schematic diagram of the connecting component on the upper part of a cylindrical lifting device according to this utility model;

[0029] Wherein: 1 is the left support arm; 2 is the pin; 3 is the left connecting arm; 4 is the lower connector; 5 is the hook; 6 is the upper connector; 7 is the right connecting arm; 8 is the right support arm; 9 is the cylindrical part; 51 is the hook rod; 52 is the positioning pin; 53 is the hook tail end. Detailed Implementation

[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] This utility model provides a cylindrical lifting tool, such as Figure 1 As shown, it includes a left support arm 1, a pin 2, a left connecting arm 3, a lower connecting part 4, a hook 5, an upper connecting part 6, a right connecting arm 7, a right support arm 8, and a cylindrical part 9.

[0032] in,

[0033] The tail of the left (right) support arms 1 and 8 is hinged to the upper connecting piece 6, and the middle part is hinged to the left (right) connecting arms 3 and 7.

[0034] One end of the left (right) connecting arms 3 and 7 is hinged to the left (right) supporting arms 1 and 8, and the other end is hinged to the lower connecting member 4;

[0035] A pin 2 is installed at the hinge joint;

[0036] The hook 5 is inserted into the center hole of the upper connector 6, and the upper connector 6 can move back and forth on the hook 5;

[0037] The lower connector 4 is inserted into the small diameter of the tail of the hook 5, and the hook 5 can rotate in the center hole of the lower connector 4.

[0038] Preferably, Figure 3 As shown, the hook 5 includes a hook rod 51, a locating pin 52, and a hook tail end 53. The locating pin 52 can be screwed onto the hook rod 51, or it can be welded onto the hook rod 51 after installation.

[0039] Preferably, Figure 4 As shown, the upper connector 6 is designed with an inlet groove E, which makes it easy for the positioning pin 52 to enter the inlet groove E when the hook 5 moves, and prevents the upper connector 6 from moving on the hook 5 when the cylindrical part is in the hoisting state.

[0040] In the preferred connecting arms 3 and 7, dimension B should be greater than or equal to the distance A between the two hinge points of the supporting arms 1 and 8, i.e., B≥A;

[0041] The preferred size of the locating pin 52 on the hook 5 should be less than or equal to the size of the guide groove of the upper connector 6, i.e., D≤E.

[0042] When the preferred cylindrical support arms 1 and 8 are in the retracted state, dimension C should be smaller than the W-shaped opening dimension of the cylindrical part.

[0043] The preferred cylindrical parts can also have 3, 4, 5, or 6 support arms evenly distributed, with the number of connecting arms and the structure of the lower connecting parts changed accordingly.

[0044] The working process of the cylindrical lifting device involved in this utility model is as follows:

[0045] The front lifting device for suspending cylindrical parts is in Figure 2 In the retracted state, insert the lifting device through the W hole of the cylindrical part, pull the hook 5 and push the upper connecting part 6, which will drive the left (right) support arms 1 and 8 to lift the cylindrical part. The positioning pin 52 on the hook 5 enters the guide groove of the upper connecting part 6. After moving to the limit position, rotate the hook 5 to make the upper connecting part 6 axially positioned on the hook 5. At this time, as Figure 1 With the left (right) support arms 1 and 8 extended, the lifting equipment is in the lifting state.

[0046] When it is necessary to remove the lifting device from the cylindrical part, simply rotate the hook 5 to the limit position, pull the upper connecting part 6 to slide the hook rod, and drive the left (right) support arms 1 and 8 to the retracted state, so that the lifting device can be removed from the W hole of the cylindrical part.

[0047] This utility model is easy to operate; pushing and twisting puts the lifting device in the lifting state, while twisting and pulling puts it in the retracting state.

[0048] The beneficial effects of this utility model are as follows: The cylindrical lifting tool provided by this utility model allows for easy entry directly into cylindrical parts through the small W-hole, enabling direct lifting after expansion, eliminating the need for machining lifting holes and installing lifting screws. Furthermore, this cylindrical lifting tool eliminates the need to weld lifting lugs to corresponding positions on cylindrical parts, preventing an increase in the external dimensions of the cylindrical parts and eliminating deformation of the cylindrical parts during welding and cutting of the lugs, thus avoiding unnecessary waste and subsequent straightening processes. This lifting tool is characterized by its simple structure and high reliability in lifting cylindrical parts.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship between the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0050] The above description is merely an example of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cylindrical lifting device, characterized in that, The cylindrical lifting device includes a left support arm (1), a left connecting arm (3), a lower connecting part (4), a hook (5), an upper connecting part (6), a right connecting arm (7), and a right support arm (8); The tail of the left support arm (1) and the tail of the right support arm (8) are respectively hinged to the upper connecting member (6), the middle part of the left support arm (1) is hinged to the left connecting arm (3), and the middle part of the right support arm (8) is hinged to the right connecting arm (7). One end of the left connecting arm (3) is hinged to the left support arm (1), one end of the right connecting arm (7) is hinged to the right support arm (8), and the other end of the left connecting arm (3) and the other end of the right connecting arm (7) are respectively hinged to the lower connecting member (4). The hook (5) is inserted into the center hole of the upper connector (6), and the upper connector (6) moves back and forth on the hook (5); The lower connector (4) is fitted onto the small diameter of the tail of the hook (5), and the hook (5) rotates within the central hole of the lower connector (4).

2. The cylindrical lifting device according to claim 1, characterized in that, The cylindrical lifting device also includes a pin (2); Pins are installed at all hinges.

3. The cylindrical lifting device according to claim 1, characterized in that, The hook (5) includes a hook rod (51), a positioning pin (52), and a hook tail end (53); The positioning pin (52) is screwed onto the hook rod (51) or welded onto the hook rod (51).

4. A cylindrical lifting device according to claim 1, characterized in that, The upper connector (6) is provided with an inlet groove E, which is used to allow the positioning pin (52) to enter the inlet groove E when the hook (5) moves, and to prevent the upper connector (6) from moving on the hook (5) when the cylindrical part is in the hoisting state.

5. A cylindrical lifting device according to claim 1, characterized in that, The dimension B of any connecting arm is greater than or equal to the distance A between the two hinge points on the hinged support arm.

6. A cylindrical lifting device according to claim 1, characterized in that, The size D of the locating pin on the hook is less than or equal to the size E of the guide groove of the upper connector.

7. A cylindrical lifting device according to claim 1, characterized in that, When the two support arms are in the retracted state, the maximum dimension C between the two support arms is smaller than the opening dimension W of the cylindrical part.

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