CN111305884B

CN111305884B - Assembling method for hydraulic support

Info

Publication number: CN111305884B
Application number: CN201911389026.9A
Authority: CN
Inventors: 周海龙; 李正训; 孙奇; 王娇; 陈俊伟; 王乾
Original assignee: SHANDONG TAGAO MINING EQUIPMENT MANUFACTURING CO LTD
Current assignee: SHANDONG TAGAO MINING EQUIPMENT MANUFACTURING CO LTD
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2022-07-12
Anticipated expiration: 2039-12-30
Also published as: CN111305884A

Abstract

An assembly method for a hydraulic support comprises the following steps: the base assembly is assembled by taking the base as a basic component, the top beam assembly and the shield beam assembly are assembled by taking the top beam as a basic component, the shield beam assembly is connected with the base assembly through the front connecting rod and the rear connecting rod, the lower component is assembled through the base assembly, the upper component is assembled through the top beam assembly and the shield beam assembly, the middle components are connected through the front connecting rod and the rear connecting rod, step-by-step assembly is realized, and the performance assembly of the hydraulic support is met.

Description

Assembling method for hydraulic support

Technical Field

The invention relates to an assembling method, in particular to an assembling method for a hydraulic support.

Background

The hydraulic support is a structure for controlling the mine pressure of a coal face, the mine pressure of the coal face acts on the hydraulic support in an external load mode, and in a mechanical system in which the hydraulic support and surrounding rock of the coal face interact, if the resultant force of all supporting pieces of the hydraulic support and the resultant force of the external load of a top plate acting on the hydraulic support are exactly in the same straight line, the hydraulic support is very suitable for the surrounding rock of the coal face, so that the assembling method for the hydraulic support is an important mine manufacturing process.

Disclosure of Invention

The object of the invention is an assembly method for a hydraulic support.

In order to overcome the technical defects, the invention aims to provide an assembling method for a hydraulic support, so that the step-by-step assembly is realized, and the performance assembly of the hydraulic support is met.

In order to achieve the purpose, the invention adopts the technical scheme that: the method comprises the following steps: the base assembly is assembled by taking the base as a basic assembly, the top beam assembly and the shield beam assembly are assembled by taking the top beam as a basic assembly, and the shield beam assembly is connected with the base assembly through the front connecting rod and the rear connecting rod.

The three assembly steps are designed, the assembly of the lower part is realized through the base assembly, the assembly of the upper part is realized through the top beam assembly and the shield beam assembly, and the connection of the middle part is realized through the front connecting rod and the rear connecting rod, so that the step-by-step assembly is realized, and the performance assembly of the hydraulic support is met.

The invention envisages the integration of technical features in a way that the lower part and the upper part are assembled step by step.

The invention designs that the method comprises the following steps: the hydraulic support comprises a base, a pushing jack, a pushing rod, a bottom adjusting device, a bottom lifting device, a vertical column, a top beam, a telescopic jack, a side protection plate jack, a left side protection plate, a right side protection plate, a shield beam, a front connecting rod, a rear connecting rod, a left side protection plate, a right side protection plate, a side pushing jack, a guide rod, a spring assembly, a balance jack, a side protection plate, a tail beam, an inserting plate, a front connecting rod and a rear connecting rod,

firstly, the method comprises the following steps: base assembly

The base is placed on the installation tool, the pushing jack is connected with the base through a connecting piece, the pushing rod is connected with the pushing jack through a connecting piece, the bottom adjusting device and the bottom lifting device are connected with the base, the upright post is connected with the base,

II, secondly: top beam assembly and shield beam assembly

The top beam is placed on the installation tool, the telescopic beam is connected with the top beam through a telescopic jack or a side protection plate jack is connected with the top beam, the supporting plate is connected with the top beam, the left and right side protection plates are connected with the top beam through side pushing jacks and spring assemblies,

the shield beam is placed on the installation tool, the front connecting rod and the rear connecting rod are connected with the shield beam through connecting pieces, the left guard plate and the right guard plate are connected with the shield beam through the side-push jack, the guide rod and the spring assembly,

the shield beam is connected with the top beam through a balance jack, the side guard plate, the tail beam and the inserting plate are connected with the top beam and the shield beam,

three, integral assembly

The top beam component and the shield beam component are connected with the base component through a front connecting rod and a rear connecting rod,

fourthly, installation of a hydraulic system

The operating valve is connected with a pushing jack, a vertical column, a telescopic jack, a side protection plate jack, a side pushing jack and a balance jack through a high-pressure rubber pipe assembly and a middle joint component,

fifth, test

And (5) inspecting the requirements of appearance quality, operation performance, sealing performance, support performance and strength.

The invention designs a base component

(1) The base is placed on the ground, and the pushing jack is hoisted in place and connected by a corresponding connecting piece;

(2) hoisting the pushing rod in place, and connecting the pushing jack with the pushing rod by using a corresponding connecting piece;

(3) a connector is arranged outside the pushing rod and connected and fixed;

(4) and respectively installing the bottom adjusting device and the bottom lifting device in place and connecting the bottom adjusting device and the bottom lifting device by using corresponding connecting pieces.

(5) The upright post is lifted and placed in the post cap nest, the upright post is fixed by the connecting piece,

second, top beam assembly and shield beam assembly

(1) The upper plane of the top beam is placed on the ground downwards, the telescopic beam and the telescopic jack are installed in place firstly when the telescopic beam is arranged, the telescopic jack and the supporting plate are installed in place by a connecting piece and are fixed by the connecting piece;

(2) directly installing the side protection plate jack in place without a telescopic beam, and retracting the side protection jack to a minimum working state;

(3) retracting and fixing the left and right side guard plates of the top beam to the minimum working state;

(4) placing the upper plane of the shield beam on the ground downwards, and respectively hoisting the front connecting rod and the rear connecting rod to the proper positions to be connected and fixed with the related hinge holes by using connecting pieces;

(5) hoisting the balance jack in place, connecting the balance jack with corresponding connecting pieces, and temporarily fixing the other end of the balance jack on the shield beam by using an iron wire;

(6) installing the side-push jack, the guide rod and the spring assembly in place and connecting the side-push jack, the guide rod and the spring assembly by using corresponding connecting pieces;

(7) hoisting the top beam assembly to the butt joint with the shield beam assembly by using a crane, and connecting and fixing the top beam and the shield beam by using connecting pieces through each hinge hole;

(8) adjusting the length of the balance jack, and connecting the top beam with the shield beam by the balance jack through a connecting piece;

(9) hanging and installing the left and right guard plates of the shield beam to the two sides of the shield beam; the side-pushing jack is retracted to the minimum working state and fixed;

(10) the mounting method of the top beam side-pushing jack, the spring assembly and the left and right side guard plates is the same as that of the shield beam assembly; the left and right side guard plates are in the maximum working state,

(11) finally, the parts such as the side protection plate, the tail beam, the inserting plate and the like are hoisted to corresponding positions by a crane and are fixed by connecting pieces such as a jack and the like,

three, integral assembly

Firstly, fixing the components such as a jack and the like by using iron wires, hoisting, overturning and hoisting the top beam and the shield beam component to the upper surface of the base component by using a travelling crane, fixing the front connecting rod on the base by using a corresponding connecting piece, then fixing the rear connecting rod on the base, supporting the front connecting rod by using a square inclined spacer, dropping the component, adjusting the positions of the upright post and the top beam nest, slowly descending to a proper position, after aligning, fixing the upright post by using the connecting piece,

fourthly, installation of a hydraulic system

(1) Mounting the pilot valve in the position shown;

(2) the high-pressure rubber pipe assembly and the intermediate joint component meet the requirements of MT 98;

(4) the pipeline arrangement needs to be neat and beautiful, and winding and twisting are avoided.

Fifth, test

(1) Appearance quality:

1.1 parts and pipeline systems of the bracket are required to be installed and reliably connected according to the specified positions of the patterns, and the arrangement is neat and beautiful;

1.2 operation indication boards for obviously showing various actions of the bracket are arranged on the bracket operation valve;

1.3 the outer surface of the bracket is painted, the paint layer is uniform without phenomena of missing spraying, bubbling, peeling, cracking and the like,

(2) the operation performance is as follows: the support is convenient to operate, the motion of each moving part is accurate and flexible without clamping stagnation, the support finishes the actions of column descending, frame moving and column lifting under the rated liquid supply pressure and flow of the support, the cycle time of the support meets the design requirement,

(3) sealing performance: the piston cavities of the upright post and the front beam jack can not be reduced under the pressure stabilized at 90 percent of the rated working pressure for 5min, each hydraulic component can not leak under the rated liquid supply pressure according to the regulation action of the bracket, one drop of working liquid seeps after 5min,

(4) support performance: under the rated liquid supply pressure, the support initial supporting force is not less than 95% of the rated initial supporting force when the support is at the test height, and the front beam jack and the balance jack are not more than 110% of the rated working pressure and not less than 90%.

(5) The strength requirement is as follows:

1.1 after the bracket is subjected to various loading tests, the main structural part cannot have the phenomenon of cracking of a welding line and a base metal;

1.2, the relative residual deformation of the top beam and the base is not more than 0.4%;

1.3 the offset angle of the central line of the top beam relative to the central line of the base is not more than 3 degrees;

1.4 other components must not be damaged and deformed significantly,

sixthly, checking and recording

(1) After the product is qualified, making various records;

(2) sealing plugs are added at the openings of the joints;

(3) riveting various nameplates at specified positions;

(4) lowering the support to the transport height;

(5) the pipeline is tied up neatly and cannot be extruded to avoid damage;

(6) when the air temperature is below 0 ℃, the anti-freezing liquid should be added in each hydraulic element and each hydraulic system.

Seventhly, paint spraying is carried out on the whole machine

Eight, rivet data plate and coal ann's sign

The invention designs that a copper bar is used for assembling the pin shaft.

The invention designs that all parts do not have flash, burr, rust and residual scrap iron, qualified structural parts can be assembled only after being painted on a special painting frame, all parts are assembled after being painted, pin shafts and valves are conveyed by a tool frame during assembly, falling to the ground is not allowed, the parts are not allowed to fall off before the assembly of the rubber pipe connecting port, sundries are prevented from entering, and all exposed rubber pipe ports are blocked after warehousing.

The invention designs that an outer cylinder is welded:

1. grinding the inner hole chamfer at the bottom of the cylinder barrel assembly cylinder according to the process requirements, then assembling the cylinder bottom in place, placing the cylinder bottom in an auxiliary device of a welding machine, clamping the outer circle of the cylinder body at one end, supporting the bottom surface of the cylinder at the other end, firmly clamping,

2. pre-adjusting the welding working voltage to be 25-28V, the working current to be 240-270A, the flow rate of protective gas CO2 to be 15-20L/min, the distance between a contact tip and a base material to be 10-12mm, the length of a welding wire extending out of the contact tip to be 2-4mm,

3. the welding adopts a backward welding method, namely, the workpiece is kept to rotate forwards, protective gas is opened, the welding machine is operated to start to work, a wire to be welded extends out of the contact tip by more than 10-15mm to contact with the bottom of the groove for arc welding, the walking angle of the welding wire is kept to be 15-20 degrees, the amplitude and the swing frequency of the welding wire are adjusted in time according to the size of the welding line, and the rotating speed of the workpiece is matched with the amplitude and the swing frequency of the welding wire,

4. and (3) completing multilayer multi-pass filling groove welding in three times: performing priming twice and cover surface welding once, unloading the workpiece at the position of total weld joint height 1/3 in the first welding, and cooling the interlayer to 90 +/-10 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 90 +/-10 ℃; finally, the cover surface is welded to fill the groove to meet the pattern requirement,

5. the left and right cylinder barrels are assembled separately in the welding process,

6. the welding line is required to be formed beautifully without the defects of undercut and the like, the arc-closing position is kept smooth without the defect of pit,

7. spot-welding corresponding liquid through pipes, pipe seats and the like according to the drawing size, pre-adjusting the welding working voltage to be 18-20V, the working current to be 170-190A, the flow of protective gas CO2 to be 15-20L/min, the length of a welding wire extending out of a contact tube to be 2-4mm and the distance of the contact tube to a base metal to be 10-12 mm; opening protective gas, simultaneously operating a welding machine to start up, leading the wire to be welded to extend out of a contact nozzle by 10-15mm for arc welding, keeping a welding wire walking angle at 15-20 degrees, carrying out multi-layer multi-welding seam welding, reserving a rotating cover surface with the thickness of about 2-3mm for welding and forming in the last step, adopting a skip welding anti-cylinder inner hole welding deformation measure for a welding joint seat,

8. according to the process requirements, the assembly plug is in place on the top end face of the bent interface, the welding working current is adjusted to be 160A in advance, the inner hole after the plug is assembled and plugged is subjected to multi-layer and multi-channel plug welding, the rotating cover face with the thickness of 2-3mm is reserved on the last layer for welding and forming,

9. the welding working current is adjusted in advance 140 and 160A, the parts of the components, such as the liquid pipe, the pipe seat, the protective pipe and the like, to be welded and formed by the weld joint of the cover surface are required to be welded and formed, the weld joint is required to be formed beautifully, the interlayer is required to be cleaned, the defects of undercut and the like are avoided,

the invention designs that an outer cylinder barrel is welded:

1. the joint and the suspension ring component are assembled on the outer cylinder and fixed in place by spot welding,

2. pre-adjusting the welding working voltage to 18-20V, the working current to 170-190A, the flow of the protective gas CO2 to 15-20L/min, the length of a welding wire extending out of a contact tube to be 2-4mm, the distance between the contact tube and a base metal to be 10-12mm, opening the protective gas, simultaneously operating a welding machine to start up the welding machine to perform arc welding, keeping the walking angle of the welding wire to be 15-20 degrees, performing multi-layer multi-pass welding, and finally reserving 2-3mm of rotary cover surface for welding and forming in the last layer; the joint position in the welding process is divided into a left cylinder barrel and a right cylinder barrel,

3. the welding working current is adjusted to 140 and 160A, the welding seam to be covered on the bent interface, the hoisting ring component and the like is welded and formed, the welding seam is required to be beautiful, the defects of undercut and the like are avoided,

3. removing spatters such as welding slag, welding flash and the like,

the invention designs a middle cylinder welding method, which comprises the following steps:

1. assembling the middle cylinder bottom into the middle cylinder in place, brushing lime liquor on two side surfaces of the edge of the groove for protection, placing the middle cylinder bottom into an auxiliary device of a welding machine, clamping the outer circle at one end, supporting the bottom surface of the middle cylinder bottom at the other end, firmly clamping,

2. pre-adjusting the welding working voltage to 25-28V, the working current to 240-270A, the flow of the protective gas CO2 to 15-20L/min, the distance between the contact tip and the base material to be 10-12mm, the length of the welding wire extending out of the contact tip to be 2-4mm,

3. the welding adopts a backward welding method (namely keeping the workpiece to rotate forward), protective gas is opened, the welding machine is operated to start to work, a wire to be welded extends out of a contact tip by more than 10-15mm to touch the bottom of a groove for arc welding, the walking angle of the welding wire is kept at 15-20 degrees, the amplitude and the swing frequency of the welding wire are adjusted according to the size of the welding line in time, the rotating speed of the workpiece is matched with the amplitude and the swing frequency of the welding wire,

4. and (3) welding a multilayer multi-pass filling groove for three times: twice priming and once covering. The workpiece is dismounted when the workpiece is welded to the total welding height 1/3 for the first time, and the interlayer temperature is reduced to 90 +/-10 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, the interlayer temperature is reduced to 90 +/-10 ℃,

5. the welding line is required to be formed beautifully without the defects of undercut and the like, the arc-closing part is kept smooth without the defect of pit, the walking angle of the welding wire can be adjusted to be 10-15 degrees during the welding of the cover surface,

6. removing spatters such as welding slag, welding flash and the like,

the invention designs that the movable column is welded:

1. the movable column head, the movable column tube and the movable column are assembled in place, lime liquid is brushed on two side surfaces of the edge of the groove for protection, the movable column head, the movable column tube and the movable column are placed in an auxiliary device of a welding machine, one end of the movable column head is clamped with an outer circle, the other end of the movable column head supports the bottom surface of the plunger, the clamping is firm,

4. and (3) welding a multilayer multi-pass filling groove for three times: twice priming and once covering. The workpiece is dismounted from the position of the total welding seam height 1/3 for the first time, and the interlayer temperature is reduced to 90 +/-10 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 90 +/-10 ℃; finally, the groove is fully filled in the face welding process to meet the requirements of the drawing,

6. and removing spatters such as welding slag, welding flash and the like.

In the technical scheme, the lower part and the upper part are assembled step by step as an important technical characteristic, and the technical field of the assembling method for the hydraulic bracket has novelty, creativity and practicability, and the terms in the technical scheme can be explained and understood by the patent documents in the technical field.

Detailed description of the preferred embodiments

Terms such as "having," "including," and "comprising," as used with respect to the present invention, are to be understood as not specifying the presence or addition of one or more other elements or combinations thereof, in accordance with the examination guidelines.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on general orientations or positional relationships, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

In addition, technical features involved in various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other, and unless otherwise specified, devices and materials used in the following examples are commercially available, and if processing conditions are not explicitly specified, please refer to a purchased product specification or follow a conventional method in the art.

The invention is further described below with reference to the following examples, which are intended to illustrate the invention but not to limit it further.

In a first embodiment of the present invention, the steps are: the hydraulic support comprises a base, a pushing jack, a pushing rod, a bottom adjusting device, a bottom lifting device, a vertical column, a top beam, a telescopic jack, a side protection plate jack, a left side protection plate, a right side protection plate, a shield beam, a front connecting rod, a rear connecting rod, a left side protection plate, a right side protection plate, a side pushing jack, a guide rod, a spring assembly, a balance jack, a side protection plate, a tail beam, an inserting plate, a front connecting rod and a rear connecting rod,

firstly, the method comprises the following steps: base assembly

II, secondly: top beam assembly and shield beam assembly

three, integral assembly

fourthly, installation of a hydraulic system

fifth, test

The second embodiment of the present invention comprises the following steps:

first, base assembly

(3) a connector is arranged outside the pushing rod and connected and fixed;

(5) The upright post is lifted and placed in the post cap nest, the upright post is fixed by a connecting piece,

second, top beam assembly and shield beam assembly

(5) hoisting the balance jack in place, connecting the balance jack with a corresponding connecting piece, and temporarily fixing the other end of the balance jack on the shield beam by using an iron wire;

(7) hoisting the top beam assembly to a joint with the shield beam assembly by using a travelling crane, and connecting and fixing the top beam and the shield beam by using connecting pieces through each hinge hole;

(10) the mounting method of the top beam side pushing jack, the spring assembly and the left and right side guard plates is the same as that of the shield beam assembly; the left and right side guard plates are in the maximum working state,

three, integral assembly

fourthly, installation of a hydraulic system

(1) Mounting the pilot valve in the position shown;

(4) the pipeline arrangement needs to be neat and beautiful and cannot be wound and twisted.

Fifth, test

(1) Appearance quality:

1.1, parts and pipeline systems of the bracket are installed and reliably connected according to the specified positions of the patterns, and are arranged neatly and attractively;

(2) the operation performance is as follows: the support is convenient to operate, the motion of each moving part is accurate, flexible and free from clamping stagnation, the support completes the actions of column descending, frame moving and column lifting under the rated liquid supply pressure and flow rate of the support, the cycle time of the support meets the design requirement,

(5) The strength requirement is as follows:

1.4 other components must not be damaged and deformed significantly,

sixthly, checking and recording

(1) After the product is qualified, making various records;

(2) sealing plugs are added at the openings of the joints;

(3) riveting various nameplates at specified positions;

(4) lowering the support to the transport height;

(5) the pipeline is tied up neatly and cannot be extruded to avoid damage;

Seventhly, paint spraying is carried out on the whole machine

Eight, rivet data plate and coal ann's sign

In this embodiment, the pin is assembled using a copper rod.

In the embodiment, all parts do not have flash, burr, corrosion and residual scrap iron, qualified structural parts can be assembled only after being painted on a special painting frame, all parts are assembled after being painted, pin shafts and valves are conveyed by the tool frame during assembly, falling to the ground is not allowed, a rubber pipe connecting port is not allowed to fall off before being assembled, sundries are prevented from entering, and all exposed rubber pipe ports are blocked after being put in storage.

In the embodiment, the welding method of the pushing jack, the upright post, the telescopic jack, the side protection plate jack, the side pushing jack and the outer cylinder, the outer cylinder barrel, the middle cylinder and the plunger of the balance jack,

welding an outer cylinder:

1. grinding the inner hole chamfer at the bottom of the cylinder barrel assembly cylinder according to the process requirements, then assembling the cylinder bottom in place, placing the cylinder barrel assembly cylinder in an auxiliary device of a welding machine, clamping the outer circle of the cylinder body at one end, supporting the bottom surface of the cylinder at the other end, firmly clamping,

4. and (3) completing the multilayer multi-pass filling groove welding in three times: backing twice and performing cover surface welding once, unloading the workpiece at the position of the total welding line height 1/3 in the first welding process, and cooling the interlayer to 90 +/-10 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 90 +/-10 ℃; finally, the cover surface is welded to fill the groove to meet the pattern requirement,

6. the welding line is required to be formed beautifully without the defects of undercut and the like, the arc-closing position is kept smooth without the defect of a pit,

8. according to the process requirements, the assembly plug is in place on the top end face of the bent connector, the welding working current is adjusted in advance to 140-160A, the inner hole after the assembly plug is welded by multiple layers and multiple channels, the rotating cover face with the thickness of 2-3mm is reserved on the last layer for welding and forming,

welding an outer cylinder barrel:

3. removing spatters such as welding slag, welding flash and the like,

middle cylinder welding:

6. removing spatters such as welding slag, welding flash and the like,

welding the movable column:

3. the welding adopts a backward welding method, namely, the workpiece is kept to rotate forward, protective gas is opened, the welding machine is operated to start to work, a wire to be welded extends out of a contact nozzle by more than 10-15mm to touch the bottom of a groove for arc welding, the walking angle of the welding wire is kept at 15-20 degrees, the amplitude and the swing frequency of the welding wire are adjusted according to the size of the welding line in time, and the rotating speed of the workpiece is matched with the amplitude and the swing frequency of the welding wire,

4. and (3) welding a multilayer multi-pass filling groove for three times: twice priming and once covering. The workpiece is dismounted when the workpiece is welded to the total welding height 1/3 for the first time, and the interlayer temperature is reduced to 90 +/-10 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 90 +/-10 ℃; finally, the groove is fully filled in the face welding process to meet the requirements of the drawing,

6. and removing spatters such as welding slag, welding flash and the like.

In a third embodiment of the present invention, the steps are: a welding method of a pushing jack, a vertical column, a telescopic jack, a side protection plate jack, a side pushing jack and an outer cylinder, an outer cylinder barrel, a middle cylinder and a movable column of a balance jack,

welding an outer cylinder:

2. the welding working voltage is adjusted to 25V in advance, the working current is 240A, the flow of protective gas CO2 is 15L/min, the distance between a contact tip and a base material is 10m, the length of a welding wire extending out of the contact tip is 2mm,

3. the welding adopts a backward welding method, namely, the workpiece is kept to rotate forward, protective gas is opened, meanwhile, the welding machine is operated to start to work, a wire to be welded extends out of a contact tip by more than 10mm to touch the bottom of a groove for arc welding, the walking angle of the welding wire is kept at 15 degrees, the amplitude and the swing frequency of the welding wire are adjusted according to the size of the welding line in time, and the rotating speed of the workpiece is matched with the welding wire,

4. and (3) completing the multilayer multi-pass filling groove welding in three times: performing priming twice and cover surface welding once, dismounting the workpiece at the position of total weld joint height 1/3 in the first welding process, and cooling the interlayer to 80 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 80 ℃; finally, the cover surface is welded to fill the groove to meet the pattern requirement,

7. spot-welding corresponding liquid-passing tubes, tube seats and the like according to the size of a drawing, pre-adjusting the welding working voltage to be 18V, the working current to be 170A, the flow of protective gas CO2 to be 15L/min, extending the welding wire out of a contact tip by 2mm, and enabling the contact tip to be 10mm away from a base material; opening protective gas, simultaneously operating a welding machine to start up, extending a wire to be welded out of a contact tube by 10mm for arc striking welding, keeping a welding wire walking angle of 15 degrees, carrying out multi-layer and multi-channel welding, reserving a rotary cover surface with the thickness of about 2mm for welding and forming in the last step, adopting a skip welding anti-cylinder inner hole welding deformation measure for a welding joint seat,

8. according to the process requirements, the assembly plug is arranged in place on the top end face of the bent interface, the welding working current is adjusted to 140A in advance, the inner hole after the assembly plug is welded in a multilayer and multi-channel plug mode, the rotating cover face with the thickness of 2mm is reserved on the last layer for welding and forming,

9. the welding working current 140A is adjusted in advance, the parts of the components, such as a liquid pipe, a pipe seat, a protective pipe and the like, to be welded and formed by the welding seam of the cover surface are required to be welded and formed, the welding seam is required to be attractive in appearance, the interlayer is required to be cleaned, the defects of undercut and the like are avoided,

welding an outer cylinder barrel:

2. pre-adjusting the welding working voltage to 18V, the working current to 170A, the flow of protective gas CO2 to 15L/min, the length of a welding wire extending out of a contact tube to be 2mm, the distance between the contact tube and a base metal to be 10mm, opening the protective gas, simultaneously operating a welding machine to start working, performing arc striking welding when the welding wire extends out of the contact tube to be 10mm, keeping a welding wire walking angle to be 15 degrees, performing multi-layer welding, finally performing welding forming on a layer of reserved 2mm rotary cover surface, and distinguishing a left cylinder barrel from a right cylinder barrel at a joint position in the welding process,

3. the welding working current 140A is adjusted to weld and form the weld seam to be covered at the bent interface, the suspension ring component and the like, the weld seam is required to be formed beautifully without the defects of undercut and the like,

3. removing spatters such as welding slag, welding flash and the like,

middle cylinder welding:

1. assembling the middle cylinder bottom into the middle cylinder in place, brushing lime liquor on two side surfaces of the edge of the groove for protection, placing the middle cylinder bottom into a welding machine auxiliary device, clamping the outer circle at one end, supporting the bottom surface of the middle cylinder bottom at the other end, firmly clamping,

4. and (3) welding a multilayer multi-pass filling groove for three times: bottoming twice and finishing once. The workpiece is dismounted when the workpiece is welded to the total welding height 1/3 for the first time, and the temperature between layers is reduced to 80 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, the interlayer temperature is reduced to 80 ℃,

5. the welding line is required to be formed beautifully, the defects of undercut and the like are avoided, the arc-closing position is kept smooth, the defect of a pit is avoided, the walking angle of the welding wire can be adjusted to be 10 degrees when the cover surface is welded,

6. removing spatters such as welding slag, welding flash and the like,

welding the movable column:

1. assembling the plunger head, the plunger tube and the plunger in place, brushing lime liquor on two side surfaces of the edge of the groove for protection, placing the plunger tube and the plunger in an auxiliary device of a welding machine, clamping the outer circle at one end, supporting the bottom surface of the plunger at the other end, clamping firmly,

2. pre-adjusting the welding working voltage to 25V, the working current to 240A, the flow of protective gas CO2 to 15/min, the distance between a contact tip and a base material to be 10mm, the length of a welding wire extending out of the contact tip to be 2m,

4. and (3) welding a multilayer multi-pass filling groove for three times: twice priming and once covering. The workpiece is dismounted when the workpiece is welded to the total welding height 1/3 for the first time, and the temperature between layers is reduced to 80 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 80 ℃; finally, the groove is fully filled in the face welding process to meet the requirements of the drawing,

6. and removing spatters such as welding slag, welding flash and the like.

The fourth embodiment of the present invention comprises the following steps: a method for welding a pushing jack, a vertical column, a telescopic jack, a side protection plate jack, a side pushing jack and an outer cylinder, an outer cylinder barrel, a middle cylinder and a movable column of a balance jack,

welding an outer cylinder:

2. the welding working voltage is adjusted to be 28V in advance, the working current is 270A, the flow of protective gas CO2 is 20L/min, the distance between a contact tip and a base metal is 12mm, the length of a welding wire extending out of the contact tip is 4mm,

3. the welding adopts a backward welding method, namely, the workpiece is kept to rotate forward, protective gas is opened, the welding machine is operated to start to work, a wire to be welded extends out of a contact tip by more than 15mm to touch the bottom of a groove for arc welding, the welding wire walking angle is kept at 20 degrees, the amplitude and the swing frequency of the welding wire are adjusted according to the size of a welding seam in time, and the rotating speed of the workpiece is matched with the welding wire,

4. and (3) completing the multilayer multi-pass filling groove welding in three times: backing twice and performing cover surface welding once, unloading the workpiece when the workpiece is welded to the total weld joint height 1/3 for the first time, and cooling the layers to 90 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 90 degrees; finally, the cover surface is welded to fill the groove to meet the pattern requirement,

7. spot-welding corresponding liquid-passing tubes, tube seats and the like according to the drawing size, pre-adjusting the welding working voltage to be 20V, the working current to be 190A, the flow of protective gas CO2 to be 20L/min, extending the welding wire out of a contact tip by 4mm, and enabling the contact tip to be 12mm away from a base metal; opening protective gas, simultaneously operating a welding machine to start up, extending a wire to be welded out of a contact tip by 15mm for arc striking welding, keeping a welding wire walking angle of 20 degrees, carrying out multi-layer and multi-channel welding, reserving a rotating cover surface with the thickness of about 3mm for welding and forming in the last step, adopting a skip welding anti-cylinder inner hole welding deformation measure for a welding joint seat,

8. according to the process requirements, the assembly plug is arranged in place on the top end face of the bent interface, the welding working current is adjusted to 160A in advance, the inner hole after the assembly plug is welded by a plurality of layers and a plurality of channels, the rotating cover face with the thickness of 3mm is reserved on the last layer for welding and forming,

9. the welding current 160A is adjusted in advance, the welding seam of the liquid pipe, the pipe seat, the protective pipe and other parts of the assembly to be covered is welded and formed, the welding seam is required to be beautiful, the interlayer is cleaned, the defects of undercut and the like are avoided,

welding an outer cylinder barrel:

2. pre-adjusting the welding working voltage to be 20V, the working current to be 190A, the flow of protective gas CO2 to be 20L/min, the length of a welding wire extending out of a contact tube to be 4mm, the distance between the contact tube and a base metal to be 12mm, opening the protective gas, simultaneously operating a welding machine to start working, performing arc striking welding when the welding wire extends out of the contact tube to be 15mm, keeping the walking angle of the welding wire to be 20 degrees, performing multi-layer and multi-pass welding, and finally performing welding forming on a layer of reserved 3mm rotary cover surface; the joint position in the welding process is divided into a left cylinder barrel and a right cylinder barrel,

3. the welding working current 160A is adjusted to weld and form the weld seam to be covered at the bent interface, the suspension ring component and the like, the weld seam is required to be formed beautifully without the defects of undercut and the like,

3. removing spatters such as welding slag, welding flash and the like,

middle cylinder welding:

4. and (3) welding a multilayer multi-pass filling groove for three times: twice priming and once covering. The workpiece is dismounted when the workpiece is welded to the total welding height 1/3 for the first time, and the temperature between layers is reduced to 90 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, the interlayer temperature is reduced to 90 ℃,

5. the welding line is required to be formed beautifully, the defects of undercut and the like are avoided, the arc-closing position is kept smooth, the defect of a pit is avoided, the walking angle of the welding wire can be adjusted to be 15 degrees during the welding of the cover surface,

6. removing spatters such as welding slag, welding flash and the like,

welding the movable column:

4. and (3) welding a multilayer multi-pass filling groove for three times: twice priming and once covering. The workpiece is dismounted from the position of the total welding seam height 1/3 for the first time, and the interlayer temperature is reduced to 90 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 90 ℃; finally, the groove is fully filled in the face welding process to meet the requirements of the drawing,

6. and removing spatters such as welding slag, welding flash and the like.

The fifth embodiment of the present invention comprises the following steps: a method for welding a pushing jack, a vertical column, a telescopic jack, a side protection plate jack, a side pushing jack and an outer cylinder, an outer cylinder barrel, a middle cylinder and a movable column of a balance jack,

welding an outer cylinder:

2. the welding working voltage is adjusted to 26V in advance, the working current is 255A, the flow of protective gas CO2 is 18L/min, the distance between a contact tip and a base material is 11mm, the length of a welding wire extending out of the contact tip is 3mm,

3. the welding adopts a backward welding method, namely, the workpiece is kept to rotate forwards, protective gas is opened, meanwhile, the welding machine is operated to start to work, a wire to be welded extends out of a contact tip by more than 13mm to touch the bottom of a groove for arc welding, the walking angle of the welding wire is kept at 17 degrees, the amplitude and the swing frequency of the welding wire are adjusted according to the size of the welding line in time, and the rotating speed of the workpiece is matched with the welding wire,

4. and (3) completing the multilayer multi-pass filling groove welding in three times: performing priming twice and cover surface welding once, dismounting the workpiece at the position of the total welding seam height 1/3 in the first welding process, and cooling the interlayer to 85 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 85 ℃; finally, the cover surface is welded to fill the groove to meet the pattern requirement,

7. spot-welding corresponding liquid through pipes, pipe seats and the like according to the drawing size, pre-adjusting the welding working voltage to be 19V, the working current to be 180A, the flow of protective gas CO2 to be 17L/min, the length of a welding wire extending out of a contact tube to be 3mm, and the distance of the contact tube to a base material to be 11 mm; opening protective gas, simultaneously operating a welding machine to start up, extending a wire to be welded out of a contact tube by 13mm for arc striking welding, keeping a welding wire walking angle of 17 degrees, carrying out multi-layer and multi-channel welding, reserving a rotating cover surface with the thickness of about 2.5mm for welding and forming in the last step, adopting a skip welding anti-cylinder inner hole welding deformation measure for a welding joint seat,

8. according to the process requirements, the assembly plug is arranged in place on the top end face of the bent interface, the welding working current is adjusted to be 150A in advance, the inner hole after the assembly plug is welded by a plurality of layers and a plurality of channels, the rotating cover face with the thickness of 2.5mm is reserved on the last layer for welding and forming,

9. the welding current is adjusted to 150A in advance, the parts of the components, such as a liquid pipe, a pipe seat, a protective pipe and the like, to be welded and formed by the weld joint of the cover surface are required to be welded and formed, the weld joint is required to be formed beautifully, the interlayer is required to be cleaned, the defects of undercut and the like are avoided,

welding the outer cylinder barrel:

1. the joint and the hoisting ring component are assembled on the outer cylinder in place and fixed by spot welding,

2. pre-adjusting the welding working voltage to be 19V, the working current to be 180A, the flow of protective gas CO2 to be 17L/min, the length of a welding wire extending out of a contact tube to be 3mm, the distance between the contact tube and a base metal to be 11mm, opening the protective gas, simultaneously operating a welding machine to start working, performing arc striking welding when the welding wire extends out of the contact tube to be 13mm, keeping the walking angle of the welding wire to be 17 degrees, performing multi-layer and multi-pass welding, and finally reserving 2.5mm for the last layer of rotary cover surface for welding forming; the joint position in the welding process is divided into a left cylinder barrel and a right cylinder barrel,

3. the welding working current is adjusted to be 150A, the weld joint to be covered at the bent interface, the flying ring component and the like is welded and formed, the weld joint is required to be formed beautifully, the defects of undercut and the like are avoided,

3. removing spatters such as welding slag, welding flash and the like,

middle cylinder welding:

2. the welding working voltage is adjusted to be 27V in advance, the working current is 250A, the flow of protective gas CO2 is 17L/min, the distance between a contact tip and a base material is 11mm, the length of a welding wire extending out of the contact tip is 3mm,

4. and (3) welding a multilayer multi-pass filling groove for three times: twice priming and once covering. The workpiece is dismounted from the position of the total welding seam height 1/3 for the first time, and the interlayer temperature is reduced to 85 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, the interlayer temperature is reduced to 85 ℃,

5. the welding line is required to be formed beautifully, the defects of undercut and the like are avoided, the arc-closing position is kept smooth, the defect of a pit is avoided, the walking angle of the welding wire can be adjusted to be 13 degrees during the welding of the cover surface,

6. removing spatters such as welding slag, welding flash and the like,

welding the movable column:

2. the welding working voltage is adjusted to be 27V in advance, the working current is 250-A, the flow of protective gas CO2 is 17L/min, the distance between a contact tip and a base material is 11mm, the length of a welding wire extending out of the contact tip is 3mm,

4. and (3) welding a multilayer multi-pass filling groove for three times: twice priming and once covering. The workpiece is dismounted from the position of the total welding seam height 1/3 for the first time, and the interlayer temperature is reduced to 85 ℃; the second welding is carried out until the depth of the second welding is about 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 85 ℃; finally, the groove is fully filled in the face welding process to meet the requirements of the drawing,

6. and removing spatters such as welding slag, welding flash and the like.

A second embodiment of the invention integrates technical features in such a way that the lower part and the upper part are assembled in steps.

A second embodiment of the invention is based on the first embodiment,

when the invention is verified, the process route that the base and the shield beam are installed through the upright post, the front connecting rod and the rear connecting rod and then other components are installed respectively is changed, the lower component is formed by the base, the push jack, the push rod, the bottom adjusting device, the bottom lifting device, the upright post, the top beam, the telescopic jack, the side guard plate jack, the left side guard plate, the right side guard plate, the shield beam, the front connecting rod, the rear connecting rod, the left side guard plate, the right side guard plate, the side push jack, the guide rod, the spring assembly, the balance jack, the side guard plate, the tail beam and the inserting plate, the assembly precision of the components of the lower component and the upper component is ensured, and the matching assembly among various hydraulic supports is realized through the reserved assembly of the lower component and the upper component, so that the assembly efficiency of the hydraulic supports is improved.

The invention has the following characteristics:

1. the three assembly steps are designed, the assembly of the lower part is realized through the base assembly, the assembly of the upper part is realized through the top beam assembly and the shield beam assembly, and the connection of the middle part is realized through the front connecting rod and the rear connecting rod, so that the step-by-step assembly is realized, and the performance assembly of the hydraulic support is met.

2. Due to the design of the pushing jack, the upright post, the telescopic jack, the side protection plate jack, the side pushing jack and the balance jack, the assembly performance of the outer cylinder, the outer cylinder barrel, the middle cylinder and the plunger is ensured.

3. Because the limitation of the numerical range on the structural shape is designed, the numerical range is the technical characteristic in the technical scheme of the invention and is not the technical characteristic obtained by formula calculation or limited tests, and the tests show that the technical characteristic in the numerical range obtains good technical effect.

4. Due to the design of the technical characteristics of the invention, under the action of the individual and mutual combination of the technical characteristics, tests show that each performance index of the invention is at least 1.7 times of that of the existing performance index, and the invention has good market value through evaluation.

Other technical features that are the same as or similar to those of the lower and upper parts assembled in steps are one of the embodiments of the present invention, and the technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features of the above-described embodiments will not be described again in order to satisfy the requirements of patent laws, patent practice rules, and examination guidelines.

The above embodiment is only one implementation form of the assembling method for the hydraulic bracket provided by the invention, and other modifications of the scheme provided by the invention, such as adding or reducing components or steps therein, or applying the invention to other technical fields close to the invention, belong to the protection scope of the invention.

Claims

1. An assembling method for a hydraulic support is characterized by comprising the following steps: the method comprises the following steps: the base assembly is assembled by taking the base as a basic assembly, the top beam assembly and the shield beam assembly are assembled by taking the top beam as a basic assembly, the shield beam assembly is connected with the base assembly through a front connecting rod and a rear connecting rod,

the hydraulic support comprises a base, a pushing jack, a pushing rod, a bottom adjusting device, a bottom lifting device, a vertical column, a top beam, a telescopic jack, a side protection plate jack, a left side protection plate, a right side protection plate, a shielding beam, a side pushing jack, a guide rod, a spring assembly, a balance jack, a side protection plate, a tail beam, an inserting plate, a front connecting rod and a rear connecting rod,

firstly, the method comprises the following steps: base assembly

II, secondly, the method comprises the following steps: top beam assembly and shield beam assembly

The top beam is placed on the installation tool, the telescopic beam is connected with the top beam through a telescopic jack or a side protection plate jack is connected with the top beam, the supporting plate is connected with the top beam, the left side protection plate and the right side protection plate are connected with the top beam through a side push jack and a spring assembly,

three, integral assembly

fourthly, installation of a hydraulic system

fifth, test

The requirements of appearance quality, operation performance, sealing performance, supporting performance and strength are checked,

the outer cylinders of the pushing jack, the telescopic jack, the side protection plate jack, the side pushing jack and the balance jack are welded:

3. the welding adopts a backward welding method, namely, the workpiece is kept to rotate forward, protective gas is opened, the welding machine is operated to start to work, a wire to be welded extends out of a contact nozzle by 10-15mm to touch the bottom of a groove for arc welding, the walking angle of a welding wire is kept at 15-20 degrees, the amplitude and the swing frequency of the welding wire are adjusted according to the size of the welding line in time, and the rotating speed of the workpiece is matched with the welding wire,

4. and (3) completing the multilayer multi-pass filling groove welding in three times: backing twice and performing cover surface welding once, unloading the workpiece at the position of the total welding line height 1/3 in the first welding process, and cooling the interlayer to 90 +/-10 ℃; the second welding is carried out until the depth of the second welding is 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 90 +/-10 ℃; finally, the cover surface is welded to fill the groove to meet the pattern requirement,

6. the welding line is required to be formed beautifully without undercut defect, the arc-closing part is kept flat without pit defect,

7. spot-welding the corresponding liquid-passing tube and tube seat according to the drawing size, pre-adjusting the welding working voltage to 18-20V, the working current to 170-20A, the flow of the protective gas CO2 to 15-20L/min, the length of the welding wire extending out of the contact tip to be 2-4mm, and the distance between the contact tip and the base metal to be 10-12 mm; opening protective gas, simultaneously operating a welding machine to start up, leading the wire to be welded to extend out of a contact nozzle by 10-15mm for arc welding, keeping a welding wire walking angle at 15-20 degrees, carrying out multi-layer multi-welding seam welding, reserving a 2-3mm thick rotary cover surface for welding and forming in the last step, adopting a skip welding anti-cylinder inner hole welding deformation measure for a welding joint seat,

9. the welding working current 140 and 160A are adjusted in advance, the liquid pipe, the pipe seat and the protective pipe of the outer cylinder assembly are welded and formed by the weld joints to be covered, the weld joints are required to be formed beautifully, the layers are cleaned, and the undercut defect cannot be caused.

2. The assembly method for a hydraulic mount of claim 1, wherein: all parts do not have flash burr, corrosion and residual iron filings, qualified structural parts can be assembled only after being painted on a special paint spraying frame, all parts are assembled after being painted, pin shafts and valves are conveyed by a tool frame during assembly, falling to the ground is not allowed, a rubber pipe connecting port is not allowed to fall off before being assembled, sundries are prevented from entering, and all exposed rubber pipe ports are blocked after being put in storage.

3. The assembly method for a hydraulic mount of claim 1, wherein: the outer cylinder barrel of the pushing jack, the telescopic jack, the side protection plate jack, the side pushing jack and the balance jack is welded:

3. the welding working current is adjusted to 140 and 160A, the welding seam to be covered at the bent interface and the hoisting ring assembly is welded and formed, the welding seam is required to be beautiful, the undercut defect cannot be caused,

4. and removing welding slag and welding flash spatters.

4. The assembly method for a hydraulic mount of claim 1, wherein: the middle cylinder of the pushing jack, the telescopic jack, the side protection plate jack, the side pushing jack and the balance jack is welded:

4. and (3) welding a multilayer multi-pass filling groove for three times: the priming is carried out twice, the cover surface is carried out once,

the workpiece is dismounted from the position of the total welding seam height 1/3 for the first time, and the interlayer temperature is reduced to 90 +/-10 ℃; the second welding is carried out until the depth of the second welding is 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, the interlayer temperature is reduced to 90 +/-10 ℃,

5. the welding line is required to be formed beautifully, the undercut defect cannot be caused, the arc-closing part is kept smooth, the pit defect cannot be caused, the welding wire walking angle can be adjusted to be 10-15 degrees during the overlay welding,

6. and removing welding slag and welding flash splashes.

5. The assembly method for a hydraulic mount of claim 1, wherein: movable column welding of a pushing jack, a telescopic jack, a side protection plate jack, a side pushing jack and a balance jack:

the workpiece is dismounted from the position of the total welding seam height 1/3 for the first time, and the interlayer temperature is reduced to 90 +/-10 ℃; the second welding is carried out until the depth of the second welding is 2mm from the outer surface of the cylinder bottom, the workpiece is unloaded, and the interlayer temperature is reduced to 90 +/-10 ℃; finally, the groove is fully filled in the face welding process to meet the requirements of the drawing,

6. and removing welding slag and welding flash splashes.