Auxiliary welding mechanism for crane production

Abstract

The utility model relates to an auxiliary welding mechanism for crane production, and belongs to the technical field of crane production. Comprising a lifting trolley, a sliding rail mechanism is installed on a lifting workbench of the lifting trolley, a left hinged plate fixing seat and a right hinged plate fixing seat are further included, the left hinged plate fixing seat and the right hinged plate fixing seat are oppositely arranged, a left telescopic arm is slidably arranged at one end of the sliding rail mechanism, and a right telescopic arm is slidably arranged at the other end of the sliding rail mechanism; a telescopic driving mechanism A for driving the left telescopic arm to stretch out and draw back relative to the sliding rail mechanism is installed on the sliding rail mechanism, the right hinged plate fixing base is fixed to the end, away from the sliding rail mechanism, of the right telescopic arm, and a telescopic driving mechanism B for driving the right telescopic arm to stretch out and draw back relative to the sliding rail mechanism is installed on the sliding rail mechanism. The welding device has the advantages that the hinge plate A and the hinge plate B are guaranteed to be parallel to each other, the hinge hole A in the hinge plate A and the hinge hole B in the hinge plate B are kept coaxial, then the welding device is welded with the telescopic arm, and the welding precision is guaranteed.

Description

Technical Field

[0001] The utility model relates to an auxiliary welding mechanism for crane production, belonging to the technical field of crane production. Background Art

[0002] Movable cranes include truck cranes, crawler cranes, traveling cranes, etc.

[0003] After searching, the patent application number is CN202020544819.5, which discloses an adjustable self-propelled hydraulic crane. It belongs to a kind of truck crane. It includes a body, and the body includes an underframe. The rear part of the underframe is provided with a directional wheel group and a turntable, and the front part of the underframe is provided with a power control system. The turntable is provided with a boom group, and the boom group is configured with a hydraulic component. The boom group is connected to a telescopic boom at the end away from the turntable, and the telescopic boom is provided with a crane at the end away from the boom group. The power control system is used to control the hydraulic component to move the telescopic boom, the boom group and the turntable. The front part of the underframe is connected to the walking system, and the power control system is also used to control the movement of the walking system. The front end of the underframe is configured with a balance adjustment component. The utility model is an adjustable self-propelled hydraulic crane that can meet the needs of a wide range of workshops, is easy to operate, has a high safety factor, requires less manual labor, and is highly practical.

[0004] It can be seen from the above patent that the telescopic arm of the crane is provided with an articulated seat articulated with the boom cylinder, and the articulated seat includes two sets of mutually parallel articulated plates A and B, and the articulated plates A and B need to remain parallel to each other, and the articulated holes A on the articulated plates A and the articulated holes B on the articulated plates B need to remain coaxial. The current technical considerations are not comprehensive, and have the following disadvantages: At present, the welding of the articulated plates A, B and the telescopic arm is fixed by manual support, and it is difficult to ensure the welding accuracy and coaxiality.

[0005] In order to solve one of the above problems, a crane production auxiliary welding mechanism is urgently needed. Utility Model Content

[0006] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: how to achieve that the hinged plate A and the hinged plate B are parallel to each other, and the hinged hole A on the hinged plate A and the hinged hole B on the hinged plate B remain coaxial, and then weld them with the telescopic arm to ensure welding accuracy. For this purpose, a crane production auxiliary welding mechanism is provided.

[0007] The crane production auxiliary welding mechanism described in the utility model includes a lifting trolley, and is characterized in that: a slide rail mechanism is installed on the lifting workbench of the lifting trolley, and also includes a left hinged plate fixing seat and a right hinged plate fixing seat arranged relatively to each other, a left telescopic arm is slidably arranged at one end of the slide rail mechanism, and a right telescopic arm is slidably arranged at the other end of the slide rail mechanism, the left hinged plate fixing seat is fixed to the end of the left telescopic arm away from the slide rail mechanism, a telescopic driving mechanism A for driving the left telescopic arm to be telescopic relative to the slide rail mechanism is installed on the slide rail mechanism, the right hinged plate fixing seat is fixed to the end of the right telescopic arm away from the slide rail mechanism, a telescopic driving mechanism B for driving the right telescopic arm to be telescopic relative to the slide rail mechanism is installed on the slide rail mechanism, and the telescopic driving mechanism A and the telescopic driving mechanism B are symmetrically arranged on the upper surface of the slide rail mechanism.

[0008] After the telescopic arm of the crane is welded, its two ends are supported on the corresponding support frames respectively, so that the position of the telescopic arm installation hinge seat is downward and suspended, and the hinge plate A and hinge plate B of the hinge seat are temporarily fixed on the left hinge plate fixing seat and the right hinge plate fixing seat respectively, and the lifting trolley is controlled to move to the bottom of the telescopic arm. At the same time, the lifting trolley is controlled to lift and gradually adjust the telescopic arm to between the left hinge plate fixing seat and the right hinge plate fixing seat, and the telescopic drive mechanism A is controlled to drive the left hinge plate fixing seat close to the telescopic arm, and the telescopic drive mechanism B is controlled to move to the bottom of the telescopic arm. Drive the right hinged plate fixing seat close to the telescopic arm, so that the hinged plate A on the left hinged plate fixing seat and the hinged plate B on the right hinged plate fixing seat are respectively attached to the welding positions on both sides of the telescopic arm, and then the hinged plate A, the hinged plate B and the telescopic arm are preliminarily welded; after completion, the telescopic drive mechanism A and the telescopic drive mechanism B are respectively used to control the left hinged plate fixing seat and the right hinged plate fixing seat to move away from each other, control the lifting trolley to lower the height, and then control the lifting trolley to move away from the bottom of the telescopic arm, and finally the hinged plate A, the hinged plate B and the telescopic arm are completely welded.

[0009] Preferably, the slide rail mechanism includes a top plate C, and the two sides of the top plate C are respectively vertically connected with side plates E and F along the length direction thereof, and the bottoms of one end of the side plates E and F are connected by a second connecting plate, and the upper surface of the second connecting plate is provided with a second slider, and the lower surface of the second connecting plate is attached to the lifting workbench and connected to the lifting workbench through the fixing bolts A at both ends thereof; the bottoms of the other ends of the side plates E and F are connected by a first connecting plate, and the upper surface of the first connecting plate is provided with a first slider, and the lower surface of the first connecting plate is attached to the lifting workbench and connected to the lifting workbench through the fixing bolts B at both ends thereof. The sliding is stable and reliable.

[0010] Preferably, the left telescopic arm is a channel steel with an opening facing downward, including a top plate A, and the two sides of the top plate A are vertically connected with side plates A and B along their length direction, and the lower surface of the top plate A is provided with a slide rail body A along its length direction that slides in cooperation with the first slider.

[0011] Preferably, the upper surface of the top plate A slides in cooperation with the lower surface of the top plate C, and the side plates A and B slide in cooperation with the inner walls of the side plates E and F, respectively.

[0012] Preferably, the right telescopic arm is a channel steel with an opening facing downward, including a top plate B, and the two sides of the top plate B are vertically connected with side plates C and D along their length direction respectively, and the inner side surface of the top plate B is provided with a slide rail body B along its length direction that slides in cooperation with the second slider.

[0013] Preferably, the upper surface of the top plate B slides in cooperation with the lower surface of the top plate C, and the side plates C and D slide in cooperation with the inner walls of the side plates E and F, respectively.

[0014] Preferably, the left hinge plate fixing seat includes a supporting splint A, the bottom of which is welded to the top plate A, the side plate A and the side plate B, the back of which is provided with a permanent magnet A, and the inner side of which is provided with a positioning pin A; the right hinge plate fixing seat includes a supporting splint B, the bottom of which is welded to the top plate B, the side plate C and the side plate D, the back of which is provided with a permanent magnet B, the inner side of which is provided with a positioning pin B, and the positioning pin A and the positioning pin B are coaxially arranged.

[0015] Preferably, the telescopic drive mechanism A is an electric push rod, whose push rod body is fixed on the top plate C, and whose telescopic execution end is connected to the support clamp plate A; the telescopic drive mechanism B is an electric push rod, whose push rod body is fixed on the top plate C, and whose telescopic execution end is connected to the support clamp plate B. The structure is simple and reliable.

[0016] Preferably, the lifting trolley comprises an electric remote-controlled trolley supporting walking on the ground, a scissor lift is installed on the electric remote-controlled trolley, and the top of the scissor lift is a lifting workbench. The existing structure realizes the movement and lifting of the new type.

[0017] Preferably, the lifting driving power source of the scissor lift is an electric push rod. The device can be powered by a mobile power source-battery.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The crane production auxiliary welding mechanism described in the utility model, the hinge plate A is temporarily fixed on the supporting clamp plate A by the magnetic force of the permanent magnet A, and the positioning pin shaft A is inserted into the hinge space A on the hinge plate A; the hinge plate B is temporarily fixed on the permanent magnet B by the magnetic force of the permanent magnet B, and the positioning pin shaft B is inserted into the hinge space B on the hinge plate B, ensuring that the hinge plate A and the hinge plate B are parallel to each other, and the hinge space A on the hinge plate A and the hinge hole B on the hinge plate B remain coaxial, and then are welded with the telescopic arm to ensure welding accuracy.

[0020] The crane production auxiliary welding mechanism described in the utility model temporarily fixes the hinge plate A and the hinge plate B of the hinge seat on the left hinge plate fixing seat and the right hinge plate fixing seat respectively, controls the lifting trolley to move to the bottom of the telescopic arm, and controls the lifting trolley to lift at the same time, gradually adjusts the telescopic arm to between the left hinge plate fixing seat and the right hinge plate fixing seat, controls the telescopic drive mechanism A to drive the left hinge plate fixing seat close to the telescopic arm, and controls the telescopic drive mechanism B to drive the right hinge plate fixing seat close to the telescopic arm, thereby avoiding manual handling and lifting and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 Schematic diagram of the internal structure of the slide rail mechanism;

[0024] Figure 3 This is the assembly drawing of the telescopic arm and the slide rail mechanism on the left side;

[0025] Figure 4 This is the assembly drawing of the right telescopic arm and the slide rail mechanism;

[0026] Figure 5 This is a diagram of the use state of the utility model;

[0027] In the figure: 1. Lifting trolley 1.1. Scissor lift 1.2. Electric remote control trolley 2. Left hinged plate fixing seat 2.1. Support splint A 2.2. Permanent magnet A 2.3. Positioning pin A 3. Right hinged plate fixing seat 3.1. Support splint B 3.2. Permanent magnet B 3.3. Positioning pin B 4. Left telescopic arm 4.1. Top plate A 4.2. Side plate A 4.3. Side plate B 4.4. Slide rail body A 5. Right telescopic arm 5.1. Top plate B 5.2. Side plate C 5.3. Side plate D 5.4. Slide rail body B 6. Slide rail mechanism 6.1. Top plate C 6.2. Side plate E 6.3. Side plate F 6.4. First connecting plate 6.5. Second connecting plate 6.6. First slider 6.7. Second slider 7. Telescopic drive mechanism A 8. Telescopic drive mechanism B 9. Hinge plate A 10. Articulated plate B 11. Telescopic arm. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings: The utility model is further illustrated below through specific embodiments, but is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the invention should be included in the protection scope of the utility model.

[0029] Embodiment 1, as Figure 1-2 As shown, a crane production auxiliary welding mechanism includes a lifting trolley 1, a sliding rail mechanism 6 is installed on the lifting workbench of the lifting trolley 1, and also includes a left hinged plate fixing seat 2 and a right hinged plate fixing seat 3 arranged relatively, one end of the sliding rail mechanism 6 is slidably provided with a left telescopic arm 4, and the other end of the sliding rail mechanism 6 is slidably provided with a right telescopic arm 5, the left hinged plate fixing seat 2 is fixed to the end of the left telescopic arm 4 away from the sliding rail mechanism 6, and a telescopic driving mechanism A7 for driving the left telescopic arm 4 to be telescopic relative to the sliding rail mechanism 6 is installed on the sliding rail mechanism 6, the right hinged plate fixing seat 3 is fixed to the end of the right telescopic arm 5 away from the sliding rail mechanism 6, and a telescopic driving mechanism B8 for driving the right telescopic arm 5 to be telescopic relative to the sliding rail mechanism 6 is installed on the sliding rail mechanism 6, and the telescopic driving mechanism A7 and the telescopic driving mechanism B8 are symmetrically arranged on the upper surface of the sliding rail mechanism 6. The telescopic arm of the crane is provided with an articulated seat hinged to the boom cylinder, and the articulated seat includes two sets of mutually parallel articulated plates A and articulated plates B. The articulated plates A and articulated plates B need to remain parallel to each other, and the articulated hole A on the articulated plate A and the articulated hole B on the articulated plate B need to remain coaxial.

[0030] Reference Figure 5After the telescopic arm 11 of the crane is welded, its two ends are supported on the corresponding support frames respectively, so that the position of the hinge seat of the telescopic arm is downward and suspended, and the hinge plate A9 and the hinge plate B10 of the hinge seat are temporarily fixed on the left hinge plate fixing seat 2 and the right hinge plate fixing seat 3 respectively, and the lifting trolley 1 is controlled to move to the bottom of the telescopic arm, and the lifting trolley 1 is controlled to lift at the same time, and the telescopic arm is gradually adjusted to between the left hinge plate fixing seat 2 and the right hinge plate fixing seat 3, and the telescopic driving mechanism A7 is controlled to drive the left hinge plate fixing seat 2 close to the telescopic arm, and the telescopic driving mechanism B8 is controlled to drive the right hinge plate fixing seat 3 close to the telescopic arm, so that the hinge plate A on the left hinge plate fixing seat 2 and the hinge plate B on the right hinge plate fixing seat 3 are respectively attached to the welding positions on both sides of the telescopic arm, and then the hinge plate A, the hinge plate B and the telescopic arm are preliminarily welded;

[0031] After completion, the telescopic drive mechanism A7 and the telescopic drive mechanism B8 are used to control the left hinge plate fixing seat 2 and the right hinge plate fixing seat 3 to move away from each other, the lifting trolley 1 is controlled to lower the height, and the lifting trolley 1 is controlled to move away from under the telescopic arm, and finally the hinge plate A, the hinge plate B and the telescopic arm are completely welded.

[0032] Embodiment 2, as Figure 1-2 As shown, a crane production auxiliary welding mechanism includes a lifting trolley 1, a sliding rail mechanism 6 is installed on the lifting workbench of the lifting trolley 1, and also includes a left hinged plate fixing seat 2 and a right hinged plate fixing seat 3 arranged relatively, one end of the sliding rail mechanism 6 is slidably provided with a left telescopic arm 4, and the other end of the sliding rail mechanism 6 is slidably provided with a right telescopic arm 5, the left hinged plate fixing seat 2 is fixed to the end of the left telescopic arm 4 away from the sliding rail mechanism 6, and a telescopic driving mechanism A7 for driving the left telescopic arm 4 to be telescopic relative to the sliding rail mechanism 6 is installed on the sliding rail mechanism 6, the right hinged plate fixing seat 3 is fixed to the end of the right telescopic arm 5 away from the sliding rail mechanism 6, and a telescopic driving mechanism B8 for driving the right telescopic arm 5 to be telescopic relative to the sliding rail mechanism 6 is installed on the sliding rail mechanism 6, and the telescopic driving mechanism A7 and the telescopic driving mechanism B8 are symmetrically arranged on the upper surface of the sliding rail mechanism 6. The telescopic arm of the crane is provided with an articulated seat hinged to the boom cylinder, and the articulated seat includes two sets of mutually parallel articulated plates A and articulated plates B. The articulated plates A and articulated plates B need to remain parallel to each other, and the articulated hole A on the articulated plate A and the articulated hole B on the articulated plate B need to remain coaxial.

[0033] Furthermore, the slide rail mechanism 6 includes a top plate C6.1, and the two sides of the top plate C6.1 are respectively vertically connected with side plates E6.2 and F6.3 along the length direction thereof, and the bottoms of one end of the side plates E6.2 and F6.3 are connected by a second connecting plate 6.5, and the upper surface of the second connecting plate 6.5 is provided with a second slider 6.7, and the lower surface of the second connecting plate 6.5 is attached to the lifting workbench and connected to the lifting workbench through the fixing bolts A at both ends thereof; the bottoms of the other ends of the side plates E6.2 and F6.3 are connected by a first connecting plate 6.4, and the upper surface of the first connecting plate 6.4 is provided with a first slider 6.6, and the lower surface of the first connecting plate 6.4 is attached to the lifting workbench and connected to the lifting workbench through the fixing bolts B at both ends thereof. The sliding is stable and reliable.

[0034] Further, refer to Figure 3 The left telescopic arm 4 is a channel steel with an opening facing downward, including a top plate A4.1, and the two sides of the top plate A4.1 are vertically connected with side plates A4.2 and side plates B4.3 along their length direction. The lower surface of the top plate A4.1 is provided with a slide rail body A4.4 along its length direction, which slides with the first slider 6.6.

[0035] Furthermore, the upper surface of the top plate A4.1 slides in cooperation with the lower surface of the top plate C6.1, and the side plates A4.2 and B4.3 slide in cooperation with the inner walls of the side plates E6.2 and F6.3 respectively.

[0036] Further, refer to Figure 4 The right telescopic arm 5 is a channel steel with an opening facing downward, including a top plate B5.1, and the two sides of the top plate B5.1 are vertically connected with side plates C5.2 and D5.3 along its length direction. The inner side surface of the top plate B5.1 is provided with a slide rail body B5.4 along its length direction, which slides with the second slider 6.7.

[0037] Furthermore, the upper surface of the top plate B5.1 slides in cooperation with the lower surface of the top plate C6.1, and the side plates C5.2 and D5.3 slide in cooperation with the inner walls of the side plates E6.2 and F6.3 respectively.

[0038] Furthermore, the left hinged plate fixing seat 2 includes a supporting splint A2.1, the bottom of which is welded to the top plate A4.1, the side plate A4.2 and the side plate B4.3, the back of which is provided with a permanent magnet A2.2, and the inner side of which is provided with a positioning pin A2.3; the right hinged plate fixing seat 3 includes a supporting splint B3.1, the bottom of which is welded to the top plate B5.1, the side plate C5.2 and the side plate D5.3, the back of which is provided with a permanent magnet B3.2, the inner side of which is provided with a positioning pin B3.3, and the positioning pin A2.3 and the positioning pin B3.3 are coaxially arranged.

[0039] The hinged plate A is temporarily fixed on the supporting clamping plate A2.1 by the magnetic force of the permanent magnet A2.2, and the positioning pin shaft A2.3 is inserted into the hinged hole A on the hinged plate A; the hinged plate B is temporarily fixed on the permanent magnet B3.2 by the magnetic force of the permanent magnet B3.2, and the positioning pin shaft B3.3 is inserted into the hinged hole B on the hinged plate B, ensuring that the hinged plate A and the hinged plate B are parallel to each other, and the hinged hole A on the hinged plate A and the hinged hole B on the hinged plate B remain coaxial, and then welded with the telescopic arm to ensure welding accuracy.

[0040] Furthermore, the telescopic drive mechanism A7 is an electric push rod, the push rod body is fixed on the top plate C6.1, and the telescopic execution end is connected to the support clamping plate A2.1; the telescopic drive mechanism B8 is an electric push rod, the push rod body is fixed on the top plate C6.1, and the telescopic execution end is connected to the support clamping plate B3.1. The structure is simple and reliable.

[0041] Furthermore, the lifting trolley 1 comprises an electric remote-controlled trolley 1.2 supporting walking on the ground, on which a scissor lift 1.1 is installed, and the top of the scissor lift 1.1 is a lifting workbench. The existing structure realizes the movement and lifting of the new type.

[0042] Furthermore, the lifting driving power source of the scissor lift 1.1 is an electric push rod. The device can be powered by a mobile power source-battery.

[0043] The crane production auxiliary welding mechanism described in the utility model, the hinge plate A is temporarily fixed on the supporting clamp plate A by the magnetic force of the permanent magnet A, and the positioning pin shaft A is inserted into the hinge space A on the hinge plate A; the hinge plate B is temporarily fixed on the permanent magnet B by the magnetic force of the permanent magnet B, and the positioning pin shaft B is inserted into the hinge space B on the hinge plate B, ensuring that the hinge plate A and the hinge plate B are parallel to each other, and the hinge space A on the hinge plate A and the hinge hole B on the hinge plate B remain coaxial, and then are welded with the telescopic arm to ensure welding accuracy.

[0044] The crane production auxiliary welding mechanism described in the utility model temporarily fixes the hinge plate A and the hinge plate B of the hinge seat on the left hinge plate fixing seat and the right hinge plate fixing seat respectively, controls the lifting trolley to move to the bottom of the telescopic arm, and controls the lifting trolley to lift at the same time, gradually adjusts the telescopic arm to between the left hinge plate fixing seat and the right hinge plate fixing seat, controls the telescopic drive mechanism A to drive the left hinge plate fixing seat close to the telescopic arm, and controls the telescopic drive mechanism B to drive the right hinge plate fixing seat close to the telescopic arm, thereby avoiding manual handling and lifting and reducing labor intensity.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the present utility model is defined by the attached claims and their equivalents.

[0046] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A crane production auxiliary welding mechanism, comprising a lifting trolley, characterized in that: A slide rail mechanism is installed on the lifting workbench of the lifting trolley, and also includes a left hinge plate fixing seat and a right hinge plate fixing seat arranged relatively to each other. A left telescopic arm is slidably arranged at one end of the slide rail mechanism, and a right telescopic arm is slidably arranged at the other end of the slide rail mechanism. The left hinge plate fixing seat is fixed to the end of the left telescopic arm away from the slide rail mechanism. A telescopic driving mechanism A for driving the left telescopic arm to be telescopic relative to the slide rail mechanism is installed on the slide rail mechanism. The right hinge plate fixing seat is fixed to the end of the right telescopic arm away from the slide rail mechanism. A telescopic driving mechanism B for driving the right telescopic arm to be telescopic relative to the slide rail mechanism is installed on the slide rail mechanism. The telescopic driving mechanism A and the telescopic driving mechanism B are symmetrically arranged on the upper surface of the slide rail mechanism.

2. The crane production auxiliary welding mechanism according to claim 1 is characterized in that: The slide rail mechanism includes a top plate C, and the two sides of the top plate C are respectively vertically connected with side plates E and side plates F along the length direction thereof; the bottoms of one end of the side plates E and F are connected by a second connecting plate, and a second slider is provided on the upper surface of the second connecting plate; the lower surface of the second connecting plate is attached to the lifting workbench and connected to the lifting workbench through fixing bolts A at both ends thereof; the bottoms of the other ends of the side plates E and F are connected by a first connecting plate, and a first slider is provided on the upper surface of the first connecting plate; the lower surface of the first connecting plate is attached to the lifting workbench and connected to the lifting workbench through fixing bolts B at both ends thereof.

3. The crane production auxiliary welding mechanism according to claim 2 is characterized in that: The left telescopic arm is a channel steel with an opening facing downward, including a top plate A, and side plates A and B are vertically connected to the two sides of the top plate A along its length direction. The lower surface of the top plate A is provided with a slide rail body A along its length direction, which slides in cooperation with the first slider.

4. The crane production auxiliary welding mechanism according to claim 3 is characterized in that: The upper surface of the top plate A slides in cooperation with the lower surface of the top plate C, and the side plates A and B slide in cooperation with the inner walls of the side plates E and F respectively.

5. The crane production auxiliary welding mechanism according to claim 4 is characterized in that: The right telescopic arm is a channel steel with an opening facing downward, including a top plate B, and the two sides of the top plate B are vertically connected with side plates C and D along its length direction. The inner side surface of the top plate B is provided with a slide rail body B along its length direction, which slides in cooperation with the second slider.

6. The crane production auxiliary welding mechanism according to claim 5 is characterized in that: The upper surface of the top plate B slides in cooperation with the lower surface of the top plate C, and the side plates C and D slide in cooperation with the inner walls of the side plates E and F respectively.

7. The crane production auxiliary welding mechanism according to claim 6 is characterized in that: The left hinge plate fixing seat includes a supporting splint A, the bottom of which is welded to the top plate A, the side plate A and the side plate B, the back of which is provided with a permanent magnet A, and the inner side of which is provided with a positioning pin A; the right hinge plate fixing seat includes a supporting splint B, the bottom of which is welded to the top plate B, the side plate C and the side plate D, the back of which is provided with a permanent magnet B, the inner side of which is provided with a positioning pin B, and the positioning pin A and the positioning pin B are coaxially arranged.

8. The crane production auxiliary welding mechanism according to claim 7 is characterized in that: The telescopic driving mechanism A is an electric push rod, whose push rod body is fixed on the top plate C, and whose telescopic execution end is connected to the supporting splint A; the telescopic driving mechanism B is an electric push rod, whose push rod body is fixed on the top plate C, and whose telescopic execution end is connected to the supporting splint B.

9. The crane production auxiliary welding mechanism according to claim 8, characterized in that: The lifting trolley comprises an electric remote-controlled trolley supported for walking on the ground, a scissor lift is installed on the electric remote-controlled trolley, and the top of the scissor lift is a lifting workbench.

Images