Sliding type cargo boom lifting device

Abstract

The utility model relates to a sliding type cargo boom lifting device. The sliding type cargo boom lifting device comprises a fixed seat (1), a frame (6), a cargo boom (2), a telescopic swing arm (3) and a telescopic oil cylinder (5), wherein the frame (6) is arranged beside the fixed seat (1) in a translation sliding manner through a roller (7); the end part of the cargo boom (2) is hinged with the fixed seat (1), the bottom of a basic arm of the cargo boom (2) is hinged with the left end of the frame (6) through the telescopic swing arm (3), and the telescopic oil cylinder (5) is hinged with the telescopic swing arm (3) and the frame (6) through the telescopic oil cylinder (5); the telescopic swing arm (3) has a telescopic variable-length working state and a fixed-length working state which are respectively applied to two variable-amplitude working conditions of a small-tonnage product and a large-tonnage product, and the variable-amplitude requirement for verification of telescopic performance of cargo booms of different-tonnage products is met. According to the utility model, various variable amplitude requirements of the cargo boom can be realized, the operation is convenient, the lifting is reliable, the telescopic performance verification of crane booms with different tonnages is met, the automatic production line of products is perfected, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of sliding type lifting arm lifting device, belong to engineering machinery technical field. BACKGROUND

[0002] The crane can realize the horizontal and vertical movement of heavy objects through lifting, rotating, amplitude, extension and other actions, and complete hoisting operation. As the core stressed component of the crane, the extension performance and the strength and stability of the structure of the lifting arm directly determine the lifting performance of the crane. The verification of the extension performance of the lifting arm refers to the smooth completion of the extension of multiple arms in different amplitude angles, and no jamming and abnormal sound. Therefore, a lifting device for assisting verification is needed to verify the extension performance of the lifting arm and improve the product automation production line.

[0003] A crane amplitude mechanism disclosed in Chinese patent CN216004996U adjusts the position of the movable support on the boom to change the force arm of the amplitude extension member acting on the boom, thereby improving the jacking force required by the amplitude extension member during the amplitude process to realize the lifting of the boom to perform the amplitude action. However, the amplitude range of the boom is limited by the limit action range of the movable support driving member and the amplitude extension member, i.e. limited by the length of the oil cylinder. Therefore, it can only be applied to the verification of the extension performance of the boom within a specific amplitude range, and it is helpless when verifying the crane boom of a crane with a large tonnage difference.

[0004] Therefore, there is an urgent need for a sliding type lifting arm lifting device that can meet the extension performance verification of the lifting arm of a crane with different tonnages, improve the product automation production line and improve work efficiency. SUMMARY

[0005] The utility model aims at overcoming the above-mentioned shortcomings, providing a sliding type lifting arm lifting device that can meet the extension performance verification of the lifting arm of a crane with different tonnages, improve the product automation production line and improve work efficiency.

[0006] The utility model is achieved as follows:

[0007] A sliding type lifting arm lifting device includes a fixed seat, a vehicle frame transversely slidingly arranged beside the fixed seat through rollers, a lifting arm hingedly connected to the left end of the vehicle frame at the bottom of the base arm, a telescopic swing arm hingedly connected to the vehicle frame, and a telescopic oil cylinder hingedly connected to the telescopic swing arm. The telescopic swing arm has two working states of telescopic variable length and fixed length, and is applied to small-tonnage products and large-tonnage products in two amplitude working conditions, respectively, to meet the amplitude requirements of the lifting arm extension performance verification of different tonnage products.

[0008] Furthermore, the telescopic swing arm is a two-section swing arm, and the arm section is telescoped by a swing arm oil cylinder arranged inside the swing arm, meeting the telescopic and variable length working condition requirements of the telescopic swing arm.

[0009] Furthermore, the two sections of the swing arm are fixedly connected by an inserting pin shaft to fix the length of the telescopic swing arm, thereby meeting the fixed length working condition requirement of the telescopic swing arm.

[0010] Furthermore, the rollers are symmetrically arranged on both sides of the frame and are driven to rotate by a driving mechanism arranged on the frame.

[0011] Furthermore, there are seven groups of rollers, including two groups at the rear of the frame, three groups in the middle of the frame, and two groups at the head of the frame, which improves the uniformity of force and the load-bearing capacity.

[0012] Furthermore, a track is provided on one side of the fixing seat along the horizontal projection direction of the boom, and the roller moves back and forth on the track.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model adopts a telescopic swing arm that is hingedly connected between a frame and a boom through roller sliding, and a telescopic oil cylinder is hingedly connected between the frame and the telescopic swing arm. The telescopic swing arm is set to two working states: a telescopic variable length and a fixed length. Combined with the roller sliding function of the frame, it can meet the variable length lifting support of the boom of various crane products from small to large tonnage. It is easy to operate and reliable to lift, and can realize the verification of the telescopic performance of booms of different tonnages, improve the product automation production line, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a sliding type crane arm lifting device.

[0016] Figure 2 This is a top view of a frame of a sliding boom lifting device of the utility model.

[0017] in:

[0018] Fixed seat 1, lifting arm 2, telescopic swing arm 3, swing arm cylinder 4, telescopic cylinder 5, frame 6, roller 7. DETAILED DESCRIPTION

[0019] See also Figures 1-2The utility model relates to a kind of sliding type hoist arm lifting device, including fixed seat 1, car frame 6 being set in the fixed seat 1 side by translational sliding of gyro wheel 7, hoist arm 2 being hingedly connected with the fixed seat 1 at end, the telescopic swing arm 3 being hingedly connected with the left end of car frame 6 at hoist arm 2 base arm bottom, the telescopic swing arm 3 being hingedly connected with car frame 6 of telescopic oil cylinder 5;

[0020] On the side of fixed seat 1, track is provided along the horizontal projection direction of hoist arm 2, the gyro wheel 7 moves back and forth on the track, the gyro wheel 7 is symmetrically arranged on both sides of the car frame 6, and is driven to rotate by the driving mechanism arranged on the car frame 6, thereby pushing the car frame 6 to move back and forth; Specifically, the gyro wheel 7 has seven groups, including two groups arranged at the tail of the car frame 6, three groups arranged at the middle of the car frame 6, and two groups arranged at the head of the car frame 6, wherein F, G, H, I, J, K and L are the center positions of the seven gyro wheel shafts, as shown in Figure 2 , effectively improve the uniformity of structure stress, improve the carrying capacity, and ensure the reliability of the lifting process;

[0021] The telescopic swing arm 3 has two working states of telescopic variable length and fixed length, and is applied to two amplitude conditions of small-tonnage products and large-tonnage products respectively, to meet the amplitude demand of hoist arm telescopic performance verification of different tonnage products. In the embodiment, the telescopic swing arm 3 is a two-section swing arm, the arm section telescoping is realized by the swing arm oil cylinder 4 arranged in the swing arm, the telescopic variable length working condition demand of the telescopic swing arm 3 is met, the connection between the two swing arms is fixed by inserting the pin shaft between the two swing arms, the length of the telescopic swing arm 3 is fixed, and the fixed length working condition demand of the telescopic swing arm 3 is met;

[0022] When verifying the telescopic performance of the hoist arm 2, the base arm end of the hoist arm 2 is connected through the hinge point O, and the hinge point B at the bottom of the base arm of the hoist arm 2 is connected with the outer section arm end of the telescopic swing arm 3, that is, the preparation work of the verification operation is completed, and the operation is simple and convenient;

[0023] If it is a small-tonnage product, a stepless amplitude changing mode is adopted, that is, the swing arm oil cylinder 4 is used to complete the telescoping between the telescopic swing arms 3, as the cylinder rod of the swing arm oil cylinder 4 extends, the telescopic swing arm 3 drives the hoist arm 2 to be raised, and at the same time, the car frame 6 of the lifting device is driven to slide forward on the track through the gyro wheel 7, to realize the amplitude changing of the hoist arm 2, and provide conditions for verifying the telescopic performance of the hoist arm; Due to the cooperation of the swing arm oil cylinder 4 and the telescopic oil cylinder 5, and the forward movement of the car frame 6, the effect that the hoist arm 2 can be steplessly changed in amplitude is realized;

[0024] If it is a large-tonnage product, a fixed amplitude changing mode is adopted, that is, the telescopic swing arms 3 are connected through the fixed pin shaft, as shown in Figure 1The pin shaft is inserted into the pin shaft hole position C between the two sections of the swing arm, the swing arm length is fixed, the structural strength of the telescopic swing arm 3 under heavy load is improved, the telescopic swing arm 3 is lifted through the telescopic oil cylinder 5, and then the lifting arm 2 is lifted, and the frame 6 of the lifting device is driven to slide forward on the track through the roller 7, different amplitude angles of the lifting arm 2 are realized, and conditions for verification of telescopic performance of the lifting arm are provided;

[0025] If it is an intermediate tonnage product between small tonnage and large tonnage, one of the above amplitude change modes is selected according to the specific tonnage range, so that the amplitude change demand of different tonnage products can be adapted. The installation and dismounting of the lifting arm 2 is simple and convenient, the working state switching between different tonnage products is simple and fast, the time cost of telescopic verification operation of the lifting arm 2 of the product production line is saved, and the production efficiency is improved.

[0026] In addition: It should be noted that the above specific embodiments are only one optimization scheme of the patent, and any changes or improvements made by those skilled in the art according to the above concept are within the protection scope of the patent.

Claims

1. A telescoping boom lifting device characterized by: The utility model relates to a telescopic jib crane, including fixed seat (1), car frame (6) that is set up in fixed seat (1) side by the translational sliding of gyro wheel (7), hoist arm (2) that is hinged connection with fixed seat (1) end, telescopic swing arm (3) that is hinged connection with the left end of car frame (6) of hoist arm (2) base arm bottom, telescopic oil cylinder (5) that is hinged connection with car frame (6) of telescopic swing arm (3), telescopic swing arm (3) has two kinds of working conditions of telescopic variable length and fixed length, is applied to small tonnage product and big tonnage product two kinds of amplitude variation working conditions respectively, satisfies the amplitude variation demand of hoist arm telescopic performance verification of different tonnage product.

2. The telescoping boom lifting device of claim 1, wherein: The telescopic swing arm (3) is a two-section swing arm, and the arm section telescoping is realized by the swing arm oil cylinder (4) arranged in the swing arm, so that the telescopic variable length working condition requirement of the telescopic swing arm (3) is met.

3. The telescoping boom lifting device of claim 2, wherein: The two-section swing arms are fixedly connected through the plug-in pin shaft, the length of the telescopic swing arm (3) is fixed, and the fixed length working condition requirement of the telescopic swing arm (3) is met.

4. The telescoping boom lifting device of claim 1, wherein: The gyro wheel (7) is symmetrically arranged on both sides of the car frame (6) and is driven to rotate by the driving mechanism arranged on the car frame (6).

5. The telescoping boom lifting device of claim 4, wherein: The gyro wheel (7) has seven groups, including two groups arranged at the tail of the car frame (6), three groups arranged at the middle of the car frame (6), and two groups arranged at the head of the car frame (6), so that the stress uniformity is improved, and the carrying capacity is improved.

6. The telescoping boom lifting device of claim 1, wherein: On one side of the fixed seat (1), a track is arranged in the horizontal projection direction of the hoist arm (2), and the gyro wheel (7) moves forward and backward on the track.

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