Lifting platform for pressing small springs of coke oven furnace columns and construction method for skipping sequences of furnace columns

Abstract

The present invention relates to a lifting platform for applying pressure to small springs of coke oven column and a construction method for column skipping sequence. The lifting platform includes an upper platform, a telescopic lifting mechanism, columns and a column clamping mechanism. The telescopic lifting mechanism is arranged between two columns and consists of a top telescopic beam, two sets of lifting mechanisms and a bottom telescopic beam. The distance between the two columns can be adjusted by the top telescopic beam and the bottom telescopic beam. The two columns are respectively fixedly connected to the column through the column clamping mechanism. The lifting platform of the present invention has a simple structure, flexible adjustment and convenient operation. It can be horizontally adjusted according to the combustion chamber spacing of different furnace types, and provides a liftable operation platform, thereby greatly improving the operation efficiency of installing and applying pressure to small springs of the column, and at the same time greatly reducing the labor intensity of operators and eliminating potential safety hazards in construction.

Description

Technical Field

[0001] The present invention relates to the technical field of coke oven construction, and particularly relates to a lifting platform for pressing small springs of a coke oven column and a construction method for skipping the sequence of the column construction. Background Art

[0002] The coke oven body is mainly made of silica bricks. During the baking and production process of the coke oven, due to the action of high temperature, the main component silicon dioxide of the silica bricks will undergo crystal form transformation, causing changes in the volume and shape of the silica bricks, thereby causing deformation or damage to the masonry. In addition, the coke oven will also be deformed or damaged due to the action of mechanical force. In order to reduce the damage of the coke oven masonry, the coke oven masonry is usually protected by furnace protection ironware, that is, by applying continuous and appropriate protective pressure to the coke oven masonry through the furnace protection ironware, so that the masonry maintains overall tightness and increases its structural strength, thereby ensuring the normal production of the coke oven and prolonging the service life of the coke oven. The furnace protection ironware is an accessory equipment of the coke oven used to protect the coke oven masonry intact and tight.

[0003] The furnace protection ironware includes longitudinal tie rods, transverse tie rods, springs, furnace columns, protection plates, furnace door frames, etc. Among them, the furnace column is a large component with a single-piece weight of about 10 tons; the furnace column is welded by I-beams (or channel steels), or can be made of special square hollow steel, and is installed outside the furnace head protection plate on the machine side or coke side. The furnace columns on both the machine side and coke side are tightened by upper and lower transverse tie rods. Big springs are installed on both the machine side of the upper transverse tie rod and both the machine side and coke side of the lower transverse tie rod. Since the upper transverse tie rod on the coke side is roasted when receiving coke and pushing it out, no spring is provided. A number of small springs are installed along the height direction inside the furnace column. The furnace column bears the expansion pressure of the furnace body through the protection plate and the furnace door frame. That is, the furnace protection ironware mainly gives the furnace body protective pressure by the stress of the furnace column itself and the external force of the spring. By using the potential energy of the adjustable spring, sufficient and evenly distributed and reasonable protective pressure can be continuously applied to the masonry, so that the masonry can still remain complete and tight under its own expansion and external force, thereby ensuring the normal production of the coke oven.

[0004] During the production process of the coke oven, if the protective pressure of the furnace protection ironware on the coke oven masonry is too large or too small, it will affect the integrity of the coke oven masonry. Therefore, the operation of pressing the large and small springs on the furnace column is particularly important.

[0005] At present, when installing and pressurizing the springs on the coke oven columns, most operations are carried out by construction workers standing in a simple small hanging basket suspended under the overhead crane on the top of the coke oven shed, or directly erecting a scaffolding at the position of the column springs. The construction workers climb from the top of the oven to the scaffolding at the corresponding position to install and pressurize the small springs. Since the spacing between two adjacent columns is narrow, there is only enough working space for one person. When using a small hanging basket for operation, the construction risk is relatively high, and it is easy to cause high-altitude falling accidents due to the overturning of the hanging basket, the fracture of the steel wire rope, etc. The method of erecting a scaffolding can only be used for single-person operation, with extremely low operation efficiency, inconvenient construction, and high risk coefficient. Summary of the Invention

[0006] The present invention provides a lifting platform for pressurizing small springs of coke oven columns and a column skipping construction method. The lifting platform has a simple structure, flexible adjustment, and convenient operation. It can be horizontally adjusted according to the combustion chamber spacing of different coke oven types, and provides a liftable operation platform, thus greatly improving the operation efficiency of installing and pressurizing small springs of the columns, while greatly reducing the labor intensity of the operators and eliminating potential safety hazards in construction.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A lifting platform for pressurizing small springs of coke oven columns includes an upper platform, a telescopic lifting mechanism, columns, and a column clamping mechanism; the two columns are vertically arranged, and slide rails are respectively arranged on the inner sides of the columns. The telescopic lifting mechanism is arranged between the two columns and consists of a top telescopic beam, two sets of lifting mechanisms, and a bottom telescopic beam; the two sets of lifting mechanisms are respectively arranged on the inner sides of the two columns, the tops of the two sets of lifting mechanisms are respectively connected to the corresponding ends of the top telescopic beam, and the bottoms of the two sets of lifting mechanisms are respectively connected to the corresponding ends of the bottom telescopic beam; the top telescopic beam is fixedly connected to the upper platform, and slide ways are respectively arranged at both ends of the top telescopic beam to cooperate with the slide rails on the columns for sliding; the spacing between the two columns can be adjusted by the top telescopic beam and the bottom telescopic beam; the two columns are respectively fixedly connected to the columns through the column clamping mechanism.

[0009] The upper platform consists of a platform board and guardrails arranged on both sides of the platform board; guide grooves are respectively arranged on both sides of the slide rails of the columns, and guide sliders are respectively arranged at the corresponding ends of the upper platform to cooperate with the guide grooves.

[0010] The column consists of a column body, a column top, and a column foot; the column top is arranged on the outer side of the top of the column body, the column foot is arranged on the outer side of the bottom of the column body, the column top and the column foot are symmetrically arranged, and the vertical cross-section is a right triangle.

[0011] The lifting mechanism is a scissor-fork type lifting mechanism, a connection node is set between the top end of the lifting mechanism and the top telescopic beam, and the connection node is a hinged node; two connection nodes are set between the bottom end of the lifting mechanism and the bottom telescopic beam, and one of the two connection nodes is a hinged node and the other is a sliding connection node.

[0012] The top telescopic beam is composed of two top end beams and one top middle beam. The top middle beam is arranged between the two top end beams. A hollow section is arranged at one end of the top end beam close to the top middle beam. A plurality of bolt positioning holes are respectively arranged on the top end beam corresponding to the hollow section and on the top middle beam. The two ends of the top middle beam are respectively inserted into the hollow sections corresponding to the top end beams. The connection between the top middle beam and the top end beam and the telescopic adjustment of the top telescopic beam are realized by bolts passing through different bolt positioning holes.

[0013] The bottom telescopic beam is composed of two bottom end beams, two bottom hollow beams and one bottom middle beam; the two bottom hollow beams are respectively located at the two ends of the bottom middle beam, and the two bottom end beams are respectively located at the outer ends of the two bottom hollow beams; the bottom end beam is provided with a receiving groove for accommodating the bottom of the lifting mechanism and a sliding groove for sliding the sliding connection node; the bottom hollow beam and the bottom middle beam are respectively provided with a plurality of bolt positioning holes; the connection between the bottom middle beam and the bottom hollow beam and the telescopic adjustment of the bottom telescopic beam are realized by bolts passing through different bolt positioning holes.

[0014] The furnace column clamping mechanism consists of a fixed seat, a first curved arm and a second curved arm; the fixed seat is fixedly arranged at the middle part of the outer side of the column, one end of the first curved arm and the second curved arm are respectively connected to the fixed seat, and the other end extends to the outer side of the column; the extended ends of the first curved arm and the second curved arm are respectively provided with a semi-enclosed structure hoop, and the hoops of the first curved arm and the second curved arm are closed to form a clamp to clamp the furnace column; the two hoops are fixed by bolt connection.

[0015] The first curved arm, the second curved arm and the fixing seat are detachably connected.

[0016] A furnace column skipping construction method is implemented by using the coke oven column small spring pressurizing lifting platform, and specifically comprises the following steps:

[0017] 1) The furnace columns are hoisted at intervals and small springs are installed and pressurized at intervals. After the two furnace columns are hoisted in place, the top large spring is first welded and fixed to the furnace column with flat steel, and pre-pressure is applied to the top large spring to fix it. The two furnace columns are tied together by upper and lower cross bars, preliminarily aligned and fixed. Then the top and bottom large springs are pressurized.

[0018] 2) A set of lifting platforms is provided on each of the machine side and the coke side. The lifting platforms are arranged between two furnace columns and are respectively connected to the corresponding two furnace columns through two sets of furnace column clamping mechanisms. After the lifting platforms are installed in place, two workers stand on the upper platforms and perform the pressure application operation on the small springs on both sides of the furnace columns simultaneously;

[0019] 3) The small springs are first grouped according to the installation sequence from top to bottom, and then the small springs and the matching set screws are placed in groups on the upper platform according to the numbers. The upper platform is driven by a lifting mechanism to rise and fall, and the small springs are sequentially installed on the furnace columns according to the installation sequence, and the pressure application operation is performed on the small springs according to the set pressure application length;

[0020] 4) After the pressure application operation on the small springs on the two furnace columns is completed, the upper platform is lowered to the lowest position, and the furnace column clamping mechanism is disassembled to separate the lifting platform from the two furnace columns. The whole lifting platform is moved between the next two furnace columns installed at intervals;

[0021] 5) Repeat steps 2) to 4) until the pressure application operation on the small springs on all furnace columns is completed.

[0022] The furnace columns are grouped for construction according to odd-numbered columns and even-numbered columns. After all the small springs on the odd-numbered furnace columns are pressure-applied, the pressure application operation on the small springs on the even-numbered furnace columns is carried out. While the pressure application operation on the small springs of the previous group of furnace columns is being carried out, the operation in step 1) is carried out on the next group of furnace columns to form a flow operation.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1) The lifting platform is provided with a top telescopic beam and a bottom telescopic beam that can be telescopically extended in both directions, and can be horizontally adjusted according to the combustion chamber spacing of different furnace types. A lifting mechanism is set to adjust the height of the upper platform, and the upper platform is raised and lowered to reach the installation positions of each small spring on the furnace column, so as to facilitate the installation and pressure application operation of the small springs;

[0025] 2) During the lifting process of the lifting platform, through the cooperation of the slide rails on the columns and the slide ways on the top telescopic beam, and the cooperation of the guiding sliders on the upper platform and the guiding grooves on the columns, the smoothness of the lifting process is greatly improved;

[0026] 3) The lifting platform is arranged on the outside of the furnace column, thus increasing the area of the operation area. The lifting platform is temporarily connected to the furnace column through a hoop-type furnace column clamping mechanism, and the overall structure is stable and the safety is strong;

[0027] 4) The operator only needs to operate the lifting of the upper platform through an electric button. The small springs and the matching set screws are placed in groups on the upper platform in advance according to the installation sequence, and the operation is more convenient and fast, improving the operation efficiency;

[0028] 5) By setting up a lifting platform between every two furnace columns, the installation and pressurization operations of the small springs inside the two furnace columns can be carried out simultaneously, thus greatly improving the operation efficiency, significantly reducing the labor intensity of the operators, avoiding the risk of falling from height in conventional operations, and ensuring the safety of the operators. Brief Description of the Drawings

[0029] Figure 1 is a three-dimensional structural schematic diagram of the lifting platform described in the present invention.

[0030] Figure 2 is a structural schematic diagram of the upper platform described in the present invention.

[0031] Figure 3 is a structural schematic diagram of the column described in the present invention.

[0032] Figure 4 is a structural schematic diagram of the upper slide rail and guide groove on the column described in the present invention.

[0033] Figure 5 is a structural schematic diagram of the telescopic lifting mechanism described in the present invention.

[0034] Figure 6 is a diagram showing the cooperation relationship between the first curved arm and the second curved arm in the furnace column clamping mechanism described in the present invention.

[0035] Figure 7 is a schematic diagram when the small spring of the furnace column is installed and pressurized using the lifting platform described in the present invention.

[0036] In the figure: 1. Upper platform 101. Platform board 102. Guardrail 103. Guide slider 2. Column 201. Column body 202. Column top 203. Column foot 204. Fixed seat 205. Slide rail 206. Guide groove 3. Lifting mechanism 4. Top telescopic beam 401. Top end beam 402. Top intermediate beam 5. Bottom telescopic beam 501. Bottom intermediate beam 502. Bottom hollow beam 503. Bottom end beam 504. Receiving groove 505. Slide groove 6. Furnace column clamping mechanism 601. First curved arm 602. Second curved arm 603. First hoop 604. Second hoop 7. Bolt 8. Furnace column 9. Small spring installation position Detailed Embodiments

[0037] The following further describes the detailed embodiments of the present invention with reference to the drawings:

[0038] As Figure 1 shown, a lifting platform for pressurizing the small springs of a coke oven furnace column described in the present invention includes an upper platform 1, a telescopic lifting mechanism, columns 2 and a furnace column clamping mechanism 6; the two columns 2 are arranged vertically, and slide rails 205 are respectively arranged inside the columns 2 (as Figure 3As shown in the figure, the telescopic lifting mechanism is arranged between two columns 2 and is composed of a top telescopic beam 4, two sets of lifting mechanisms 3 and a bottom telescopic beam 5. The two sets of lifting mechanisms 3 are respectively arranged on the inner sides of the two columns 2. The tops of the two sets of lifting mechanisms 3 are respectively connected to the corresponding ends of the top telescopic beam 4, and the bottoms of the two sets of lifting mechanisms 3 are respectively connected to the corresponding ends of the bottom telescopic beam 5. The top telescopic beam 4 is fixedly connected to the upper platform 1. Slideways are respectively arranged at both ends of the top telescopic beam 4 and are slidably matched with the slide rails 205 on the columns 2. The distance between the two columns 2 can be adjusted by the top telescopic beam 4 and the bottom telescopic beam 5. The two columns 2 are respectively fixedly connected to the furnace columns 8 through furnace column clamping mechanisms 6.

[0039] As Figure 2 shown, the upper platform 1 is composed of a platform board 101 and guardrails 102 arranged on both sides of the platform board 101. Guide grooves 206 are respectively arranged on both sides of the slide rail 205 of the column 2, and guide sliders 103 are respectively arranged at the corresponding ends of the upper platform 1 and are matched with the guide grooves 206.

[0040] As Figure 3 shown, the column 2 is composed of a column body 201, a column top 202 and a column foot 203. The column top 202 is arranged on the outer side of the top of the column body 201, the column foot 203 is arranged on the outer side of the bottom of the column body 201, the column top 202 and the column foot 203 are symmetrically arranged, and the vertical cross-sections are all right-angled triangles.

[0041] As Figure 4 shown, the lifting mechanism 3 is a scissor-type lifting mechanism. A connection node is arranged between the top end of the lifting mechanism 3 and the top telescopic beam 4, and this connection node is a hinged node. Two connection nodes are arranged between the bottom end of the lifting mechanism 3 and the bottom telescopic beam 5, and one of the two connection nodes is a hinged node and the other is a sliding connection node.

[0042] The top telescopic beam 4 is composed of two top end beams 401 and one top intermediate beam 402. The top intermediate beam 402 is arranged between the two top end beams 401. A hollow section is arranged at one end of the top end beam 401 close to the top intermediate beam 402. A plurality of bolt positioning holes are respectively arranged on the top end beam 401 corresponding to the hollow section and on the top intermediate beam 402. The two ends of the top intermediate beam 402 are respectively inserted into the hollow sections of the corresponding top end beams 401, and the connection between the top intermediate beam 402 and the top end beams 401 and the telescopic adjustment of the top telescopic beam 4 are realized by bolts 7 passing through different bolt positioning holes.

[0043] The bottom telescopic beam 5 is composed of 2 bottom end beams 503, 2 bottom hollow beams 502 and 1 bottom intermediate beam 501; the 2 bottom hollow beams 502 are respectively located at both ends of the bottom intermediate beam 501, and the 2 bottom end beams 503 are respectively located at the outer ends of the 2 bottom hollow beams 502; a receiving groove 504 for receiving the bottom of the lifting mechanism 3 and a sliding groove 505 for the sliding connection node to slide are provided on the bottom end beam 503; a plurality of bolt positioning holes are respectively provided on the bottom hollow beam 502 and the bottom intermediate beam 501; the connection between the bottom intermediate beam 501 and the bottom hollow beam 502 and the telescopic adjustment of the bottom telescopic beam 5 are realized by bolts 7 passing through different bolt positioning holes.

[0044] As Figure 2 , Figure 6 shown, the furnace column clamping mechanism 6 is composed of a fixed seat 204, a first crank arm 601 and a second crank arm 602; the fixed seat 204 is fixedly arranged in the middle of the outer side of the column 2, one ends of the first crank arm 601 and the second crank arm 602 are respectively connected with the fixed seat 204, and the other ends extend to the outer side of the column 2; semi-surrounding structures of a first hoop 603 and a second hoop 604 are respectively arranged at the extending ends of the first crank arm 601 and the second crank arm 602, and the first hoop 603 and the second hoop 604 of the first crank arm 601 and the second crank arm 602 form a clamping hoop to clamp the furnace column 8 after being closed; the two hoops are fixedly connected by bolts.

[0045] The connection between the first crank arm 601, the second crank arm 602 and the fixed seat 204 is detachable.

[0046] A construction method for the furnace column skipping sequence is realized by using the lifting platform for the small spring pressurization of the coke oven furnace column, and specifically includes the following steps:

[0047] 1) The furnace column 8 adopts a skipping construction method of interval hoisting and interval installation and pressurization of small springs; after two spaced furnace columns 8 are hoisted in place, the top large spring is first welded and fixed on the furnace column 8 with flat steel, and a pre-pressure is applied to the top large spring for fixation; the two furnace columns 8 are tied with an upper cross bar and a lower cross bar, and are initially aligned and fixed; then the pressurization operation of the top large spring and the bottom large spring is carried out.

[0048] 2) One set of lifting platform is arranged on each of the machine side and the coke side. As Figure 7 shown, the lifting platform is arranged between two furnace columns 8, and is respectively connected to the corresponding two furnace columns 8 through two sets of furnace column clamping mechanisms 6; after the lifting platform is installed in place, two operators stand on the upper platform 1 and carry out the pressurization operation of the small springs on both sides of the furnace column 8 at the same time.

[0049] 3) The small springs are first grouped according to the installation sequence from top to bottom (the small spring installation position 9 is as Figure 7As shown in the figure, then place the small springs and the matching set screws in groups on the upper platform 1 according to the numbers; drive the upper platform 1 to rise and fall through the lifting mechanism 3, and install the small springs on the furnace columns 8 in sequence according to the installation order, and perform the pressurization operation on the small springs according to the set pressurization length;

[0050] 4) After the pressurization operation of the small springs on the two furnace columns 8 is completed, lower the upper platform 1 to the lowest position, disassemble the furnace column clamping mechanism 6 to separate the lifting platform from the two furnace columns 8; move the whole lifting platform to between the next two furnace columns 8 installed at intervals;

[0051] 5) Repeat steps 2) to 4) until the pressurization operation of the small springs on all the furnace columns 8 is completed.

[0052] The furnace columns 8 are grouped for construction according to odd-numbered columns and even-numbered columns; after all the small springs on the odd-numbered furnace columns are pressurized, then perform the pressurization operation on the small springs on the even-numbered furnace columns; while the small springs on the previous group of furnace columns are being pressurized, the next group of furnace columns performs the operation of step 1), forming a flow operation.

[0053] The following embodiments are implemented on the premise of the technical solution of the present invention, and the detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0054]

Embodiment

[0055] In this embodiment, a lifting platform for pressurizing small springs of a coke oven furnace column includes an upper platform 1, a telescopic lifting mechanism, columns 2 and a furnace column clamping mechanism 6; the upper platform 1 is matched with the guide grooves 206 on the two side columns 2 through the guide sliders 103 at both ends, the upper platform 1 is welded and fixed to the top telescopic beam 4 in the telescopic lifting mechanism, and the upper platform 1 can move up and down along the vertical direction with the lifting mechanism 3. Slideways are provided at both ends of the top telescopic beam 4 to cooperate with the slide rails 205 on the two side columns 2, and the bottom telescopic beam 5 in the telescopic lifting mechanism is welded and fixed to the lower parts of the two side columns 2.

[0056] The furnace column clamping mechanism 6 is designed according to the shape and size of the furnace column 8 and is temporarily connected to the furnace column 8 through a hoop. The furnace column clamping mechanism 6 is provided with a first crank arm 601 and a second crank arm 602. The first hoop 603 on the first crank arm 601 and the second hoop 604 on the second crank arm 602 are joined together and connected by bolts and nuts to form a hoop. The other ends of the first crank arm 601 and the second crank arm 602 are connected to the fixed seat 204 arranged outside the column 2 through bolts, and the overall structural stability is good.

[0057] The cross-sections of the column top 202 and the column foot 203 of the column 2 are designed to be right-angled triangles to increase their overall stability. A fixed seat 204 is set in the middle of the outer side of the column 2, and two guide grooves 206 and a slide rail 205 are set along the inner side of the column 2 along the height. The slide rail 205 is located between the two guide grooves 206. The guide grooves 206 and the slide rail 205 can ensure the stability of the upper platform 1 when it is raised or lowered.

[0058] The telescopic lifting mechanism is composed of a lifting mechanism 3, a top telescopic beam 4, and a bottom telescopic beam 5. The lifting mechanism 3 is driven by electric, pneumatic or hydraulic means. In this embodiment, the lifting mechanism is driven by an electric actuator. The top telescopic beam 4 and the bottom telescopic beam 5 can also be driven by electric, pneumatic or hydraulic means. In this embodiment, manual adjustment is adopted.

[0059] The top telescopic beam 4 is composed of two top end beams 401 and one top middle beam 402. The two top end beams 401 are respectively connected to the top of the lifting mechanism 3 through a hinge node, and the end of the top end beam 401 that is connected to the top middle beam 402 is plugged into the top middle beam 402 through a hollow section. When in use, the length of the top telescopic beam 4 is first adjusted according to the spacing of the furnace columns 8, and then two sets of bolts and nuts are inserted into the prefabricated bolt positioning holes for fixed connection. The bottom middle beam 501 of the bottom telescopic beam 5 is plugged into the bottom hollow beam 502, and the bottom hollow beam 502 is fixedly connected to the bottom end beam 503. The bottom end beam 503 is connected to the lower end of the lifting mechanism 3 through a hinge node and a sliding connection node, wherein the sliding connection node can slide in the slide groove 505 on the bottom end beam 503.

[0060] In this embodiment, the platform plate 101 of the upper platform 1 is made of a 2.5mm thick patterned steel plate, which has reliable bearing capacity, is not easy to deform and has good anti-skid effect. The size of the platform plate 101 is 800mm (width) × 2.5mm (thickness) × 1800mm (length). Two groups of 4 guide sliders 103 are symmetrically processed at both ends of the platform plate 101. The width of each guide slider 103 is 9mm, and the center line spacing of the two guide sliders 103 in the same group is 48mm. The guide slider 103 is used to cooperate with the guide groove 206 on the column 2 to play a guiding role in the lifting process of the upper platform 1. When in use, after the lateral size of the telescopic lifting mechanism is adjusted, the upper platform 1 is welded and fixed to the top end beam 401; since the spacing between the columns 8 of the same model of coke oven is fixed, the installation and pressurization operation of the small spring of the entire coke oven column can be completed after one adjustment.

[0061] In this embodiment, the column 2 is made of a steel plate with a thickness of 20 mm, and its external dimensions are 2000 mm (height) × 20 mm (width) × 200 mm (length). A column top 202 with a right-angled triangle cross-section is welded to the outer side of the top of the column 2, and a column foot 203 with a right-angled triangle cross-section is welded to the outer side of the bottom. The cross-sectional dimensions of the column top 202 and the column foot 203 are: the included angle between the hypotenuse and the horizontal line is 30°, the length of the straight side in the horizontal direction is 300 mm, the height of the outer end face is 30 mm, and the height of the inner end face is 200 mm. One slide rail 205 and two guide grooves 206 are made on the inner side of the column 2. The width of the guide groove 206 is 9 mm, and the center distance between the two guide grooves 206 is 48 mm, which is symmetrically arranged along the center line of the column 2. The slide rail 205 is arranged along the center line of the column 2. The slide rail 205 is a T-shaped slide rail, and its horizontal side dimensions are 36 mm (width) × 4 mm (thickness), and the vertical rib dimensions are 8 mm (width) × 2 mm (thickness). A square pipe with dimensions of 160 mm × 160 mm and a wall thickness of 20 mm is welded to the middle part of the outer side of the column 2 as a fixed seat 204. One side of the pipe opening of the square pipe faces outward. Four through holes with a diameter of are machined at a distance of 60 mm from the outer end face of the fixed seat 204 along its circumferential direction for bolt connection with the first crank arm 601 and the second crank arm 602.

[0062] The internal dimensions of the hoop formed by the first crank arm 601, the second crank arm 602, the first hoop 603 and the second hoop 604 are 300 mm × 300 mm. The widths of the first crank arm 601 and the second crank arm 602 are both 120 mm. The other end is welded with an L-shaped steel plate with a thickness of 60 mm. After the hoops are aligned, they are bolted through the prefabricated holes with a diameter of on the outer side. Through holes are provided on the L-shaped steel plate for bolt connection with the fixed seat 204.

[0063] In this embodiment, the top end beam 401 is made of a flat steel with dimensions of 1040 mm (length) × 20 mm (thickness) × 100 mm (width). Prefabricated holes with a diameter of are machined at a distance of 300 mm from the end face at one end of the top end beam 401 corresponding to the column 2 for hinge connection with the lifting mechanism 3. The center of the prefabricated hole is located on the center line of the flat steel. The other end of the top end beam 401 is machined with a hollow groove with a cross-sectional dimension of 92 mm (width) × 12 mm (height) to form a hollow section with a depth of 400 mm for connection with the top middle beam 402. Five through holes with a diameter of Bolt positioning holes with a spacing of 80 mm. The end face distance from the outermost bolt positioning hole to the top end beam 401 is 40 mm. These bolt positioning holes are provided on the center line of the top end beam 401. Through the cooperation of different bolt positioning holes, the lateral adjustment distance of the telescopic lifting mechanism can be divided into several different gears and fixed by bolt connection after positioning. End baffles are respectively provided at both ends of the top intermediate beam 402. The size of the end baffle is 70 mm (length) × 6 mm (thickness) × 20 mm (width). The size of the top intermediate beam 402 body is 400 mm (length) × 12 mm (thickness) × 60 mm (width). It is made of flat steel and 5 bolt positioning holes with a spacing of 80 mm are machined on its longitudinal center line.

[0064] For the structure and dimensions of the bottom hollow beam 502 and the bottom intermediate beam 501 in the bottom telescopic beam 5, refer to the hollow section of the top end beam 401 and the top intermediate beam 402. One end of the bottom end beam 503 is welded and fixed to the bottom hollow beam 502, and the other end is welded and fixed to the column 2. A receiving groove 504 with a size of 580 mm (length) × 20 mm (width) × 100 mm (height) is opened along the height direction on the bottom end beam 503. A long hole with a center distance of 200 mm and a height of 65 mm is opened horizontally at the outer end of the receiving groove 504 as a sliding groove 505. The lifting mechanism 3 adopts a scissor-type lifting mechanism, and the hinge shafts on it all adopt short shafts with a diameter of which slide in the sliding groove 505 as the short shafts of the sliding connection nodes.

[0065] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An elevating platform for applying pressure to small springs of coke oven columns, characterized in that, It includes an upper platform, a telescopic lifting mechanism, columns and a furnace column clamping mechanism; the columns are 2 and are arranged vertically, with slide rails respectively arranged on the inner sides of the columns; the telescopic lifting mechanism is arranged between the 2 columns and consists of a top telescopic beam, 2 sets of lifting mechanisms and a bottom telescopic beam; the 2 sets of lifting mechanisms are respectively arranged on the inner sides of the 2 columns, the tops of the 2 sets of lifting mechanisms are respectively connected to the corresponding ends of the top telescopic beam, and the bottoms of the 2 sets of lifting mechanisms are respectively connected to the corresponding ends of the bottom telescopic beam; the top telescopic beam is fixedly connected to the upper platform, and slide ways are respectively arranged at both ends of the top telescopic beam to cooperate with the slide rails on the columns for sliding; the distance between the 2 columns can be adjusted through the top telescopic beam and the bottom telescopic beam; the 2 columns are respectively fixedly connected to the furnace columns through the furnace column clamping mechanisms; The upper platform consists of a platform board and guardrails arranged on both sides of the platform board; guide grooves are respectively arranged on both sides of the slide rails of the columns, and guide sliders are respectively arranged at the corresponding ends of the upper platform to cooperate with the guide grooves; The column consists of a column body, a column top and a column foot; the column top is arranged on the outer side of the top of the column body, the column foot is arranged on the outer side of the bottom of the column body, the column top and the column foot are symmetrically arranged, and the vertical cross sections are both right triangles; The lifting mechanism is a scissor-type lifting mechanism, and a connection node is arranged between the top end of the lifting mechanism and the top telescopic beam, and this connection node is a hinge node; 2 connection nodes are arranged between the bottom end of the lifting mechanism and the bottom telescopic beam, and one of the 2 connection nodes is a hinge node and the other is a sliding connection node; The top telescopic beam consists of 2 top end beams and 1 top middle beam; the top middle beam is arranged between the 2 top end beams, a hollow section is arranged at one end of the top end beam close to the top middle beam, and a plurality of bolt positioning holes are respectively arranged on the top end beam corresponding to the hollow section and on the top middle beam; both ends of the top middle beam are respectively inserted into the hollow sections of the corresponding top end beams, and the connection between the top middle beam and the top end beam, as well as the telescopic adjustment of the top telescopic beam, are realized by bolts passing through different bolt positioning holes; The bottom telescopic beam consists of 2 bottom end beams, 2 bottom hollow beams and 1 bottom middle beam; the 2 bottom hollow beams are respectively located at both ends of the bottom middle beam, and the 2 bottom end beams are respectively located at the outer ends of the 2 bottom hollow beams; a receiving groove for receiving the bottom of the lifting mechanism and a sliding groove for the sliding connection node to slide are arranged on the bottom end beam; a plurality of bolt positioning holes are respectively arranged on the bottom hollow beam and the bottom middle beam; the connection between the bottom middle beam and the bottom hollow beam, as well as the telescopic adjustment of the bottom telescopic beam, are realized by bolts passing through different bolt positioning holes; The furnace column clamping mechanism consists of a fixed seat, a first crank arm and a second crank arm; the fixed seat is fixedly arranged in the middle of the outer side of the column, one ends of the first crank arm and the second crank arm are respectively connected to the fixed seat, and the other ends extend to the outer side of the column; semi-enclosing structures of hoops are respectively arranged at the extending ends of the first crank arm and the second crank arm, and the hoops of the first crank arm and the second crank arm form a clamping hoop to clamp the furnace column after being closed; the 2 hoops are connected and fixed by bolts.

2. The lifting platform for pressing small springs of a coke oven column according to claim 1, characterized in that, The connection between the first crank arm and the second crank arm and the fixed seat is a detachable connection.

3. A construction method for furnace columns with sequential skipping, characterized in that, It is realized by using a lifting platform for small spring pressurization of a coke oven furnace column as described in claim 1 or 2, and specifically includes the following steps: 1) The method of skipping sequence construction is adopted for the furnace columns, that is, interval hoisting and interval installation and pressurization of small springs. After the two furnace columns set at intervals are hoisted and in place, first use flat steel to weld and fix the top large spring on the furnace column, and apply pre-pressure to the top large spring for fixation. The two furnace columns are tied together by the upper cross bar and the lower cross bar for preliminary alignment and fixation. Then, the pressurization operations of the top large spring and the bottom large spring are carried out. 2) One set of lifting platforms is set on each of the machine side and the coke side. The lifting platforms are arranged between the two furnace columns and are respectively connected to the corresponding two furnace columns through two sets of furnace column clamping mechanisms. After the lifting platforms are installed in place, two workers stand on the upper platform and simultaneously carry out the pressurization operation on the small springs of the furnace columns on both sides. 3) The small springs are first grouped according to the installation sequence from top to bottom, and then the small springs and the matching top screws are placed in groups on the upper platform according to the numbers. The upper platform is driven by the lifting mechanism to rise and fall, and the small springs are sequentially installed on the furnace columns according to the installation sequence, and the pressurization operation is carried out on the small springs according to the set pressurization length. 4) After the pressurization operation of the small springs on the two furnace columns is completed, the upper platform is lowered to the lowest position, and the furnace column clamping mechanism is disassembled to separate the lifting platform from the two furnace columns. The whole lifting platform is moved between the next two furnace columns installed at intervals. 5) Repeat steps 2) to 4) until the pressurization operation of the small springs on all furnace columns is completed.

4. A method for constructing a furnace column with skipped sequences according to claim 3, characterized in that, The furnace columns are grouped for construction according to odd-numbered columns and even-numbered columns. After the pressurization of all the small springs on the odd-numbered furnace columns is completed, the pressurization operation of the small springs on the even-numbered furnace columns is carried out. While the pressurization operation of the small springs on the previous group of furnace columns is in progress, the next group of furnace columns carries out the operation in step 1), forming a flow operation.

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