阅读说明：本技术 Smw工法中型钢精准插拔定位装置及方法 (Precise plugging and positioning device and method for medium-sized steel in SMW construction method ) 是由 张阿晋 王新新 陈峰军 周泉吉 沈蓉 于 2021-10-12 设计创作，主要内容包括：本发明的SMW工法中型钢精准插拔定位装置及方法,针对现有SMW工法中H型钢靠自重插入就位,无法主动纠偏,导致其就位精准性差的问题。它包括支撑架体,连接于支撑架体两个定位支架之间的夹持件,以及控制系统,夹持件包括相连接的卡箍和伸缩杆,水平且相对设置的一对夹持件的卡箍分别套设于H型钢的两侧翼缘板,夹持件的伸缩杆分别连接于两侧的定位支架,伸缩杆均与控制系统信号连接。方法步骤：施工三轴搅拌桩并安装定位装置,将支撑架体的一对定位支架分别连接于混凝土底座,将夹持件活动连接于两个定位支架之间,将夹持件的夹箍依次套设于H型钢的两侧翼缘板,通过控制系统调整夹持件伸缩杆的长度,对H型钢实施初步就位。(The invention discloses a device and a method for accurately plugging and positioning medium-sized steel in an SMW construction method, and aims to solve the problem that H-shaped steel in the existing SMW construction method cannot be actively corrected because the H-shaped steel is inserted in place by dead weight, so that the positioning accuracy is poor. It is including supporting the support body, connects the holder between two locating support of support body to and control system, the holder is including the clamp and the telescopic link that are connected, and the both sides flange board of H shaped steel is located respectively to the clamp of a pair of holder of level and relative setting, and the telescopic link of holder is connected respectively in the locating support of both sides, and the telescopic link all with control system signal connection. The method comprises the following steps: construct triaxial mixing pile and installation positioner, will support a pair of locating support of support body and connect respectively in the concrete base, with holder swing joint between two locating support, locate H shaped steel's both sides flange board with the clamp hoop of holder in proper order cover, through the length of control system adjustment holder expansion link, implement tentatively taking one's place to H shaped steel.)

Accurate plug positioner of medium-sized steel of SMW worker method, its characterized in that includes: support the support body, at least a pair of holder to and a control system, support the support body and include the locating support that a pair of vertical and interval set up, a pair of locating support sets up along triaxial stirring stake extending direction, and be located respectively the both sides of triaxial stirring stake, at least a pair of holder swing joint of vertical interval setting is between a pair of locating support, and every holder is including the clamp and the telescopic link that are connected, and the both sides flange board of H shaped steel is located respectively to the clamp of a pair of holder of level and relative setting, and the other end of holder telescopic link is connected in the locating support rather than the homonymy, and, the telescopic link and the control system signal connection of holder.

2. The SMW construction method medium-sized steel accurate plugging and pulling positioning device as claimed in claim 1, wherein: the clamping piece further comprises a plurality of pairs of positioning gears connected to the inner wall of the clamping hoop and a driving device connected with the positioning gears, the plurality of pairs of positioning gears of the clamping piece clamp the flange plates on two sides of the H-shaped steel, and the driving device drives the positioning gears to rotate forwards or reversely to indirectly drive the H-shaped steel clamped between the positioning gears to be inserted or pulled out.

3. The SMW construction method medium-sized steel accurate plugging and pulling positioning device as claimed in claim 2, wherein: the clamping piece further comprises a plurality of adjusting rods, each positioning gear is connected with one adjusting rod, one end of each adjusting rod is connected with the rotating shaft of the corresponding positioning gear, the other end of each adjusting rod is connected to the inner wall of the corresponding clamp, and the adjusting rods are all in signal connection with the control system.

4. The SMW construction method medium-sized steel accurate plugging and pulling positioning device as claimed in claim 1, wherein: the laser positioning device further comprises two horizontal positioning assemblies connected with the control system, the two horizontal positioning assemblies are arranged on the inner side of the positioning support at intervals in the vertical direction, and each horizontal positioning assembly comprises a laser transmitter and a laser receiver which are horizontally and oppositely arranged on a pair of positioning supports.

5. The SMW construction method medium-sized steel accurate plugging and pulling positioning device as claimed in claim 1, wherein: the clamping device further comprises two first vertical positioning assemblies connected with the control system, the first vertical positioning assemblies are installed between the two adjacent and vertically arranged clamping pieces, and each first vertical positioning assembly comprises a laser transmitter and a laser receiver which are installed on the side walls of the two clamping piece clamping hoops respectively.

6. The SMW construction method medium-sized steel accurate plugging and pulling positioning device as claimed in claim 1, wherein: the laser transmitter and the laser receiver of the two second vertical positioning assemblies are respectively arranged on the positioning gears of the two clamping pieces which are adjacent and vertically arranged.

7. The SMW construction method medium-sized steel accurate plugging and pulling positioning device as claimed in claim 2, wherein: the flange plates on two sides of the H-shaped steel are also provided with a plurality of tooth grooves along the length direction, and the positioning gear is buckled in the tooth grooves of the H-shaped steel and tightly attached.

The method for accurately plugging and positioning the section steel in the SMW construction method is characterized by comprising the following steps:

s1: constructing concrete bases which are respectively positioned at two sides of the position where the triaxial mixing pile to be constructed is positioned, and constructing to finish the triaxial mixing pile;

s2: installing the precise inserting and pulling positioning device for the medium-sized steel in the SMW construction method according to any one of claims 1 to 7, respectively bolting a pair of positioning brackets of a support frame body to two concrete bases, movably connecting at least one pair of vertically arranged clamping pieces between the two positioning brackets, lowering the H-shaped steel, sequentially sleeving clamping hoops of the at least one pair of clamping pieces on flange plates at two sides of the H-shaped steel, adjusting the length of telescopic rods of the clamping pieces through a control system, preliminarily positioning the H-shaped steel, sequentially installing subsequent sections of the H-shaped steel until the subsequent sections are inserted into the positioning, and sequentially removing the H-shaped steel after a purlin is removed.

9. The method for accurately inserting and pulling the medium-sized steel in the SMW process as recited in claim 8, wherein the step S2 further comprises: the holder still includes many pairs of positioning gear, many regulation poles and connect in positioning gear's drive arrangement, the one end of adjusting the pole is connected with positioning gear's pivot, the other end of adjusting the pole is connected in the clamp inner wall, and adjust the pole all with control system signal connection, the location gear of holder presss from both sides behind the both sides flange plate of tight H shaped steel, adjust the flexible length of every regulation pole respectively through control system, accurate location H shaped steel, and rotate through drive arrangement drive positioning gear, indirectly drive the H shaped steel automatic insertion of centre gripping between positioning gear, the construction is accomplished and is enclosed the purlin and demolishd the back, accomplish the construction of pulling out of H shaped steel through control positioning gear reversal.

10. The method for accurately inserting and pulling the medium-sized steel in the SMW process as recited in claim 8, wherein the step S2 further comprises: the two horizontal positioning assemblies are arranged on the positioning supports at intervals along the vertical direction, the laser transmitter and the laser receiver of each horizontal positioning assembly are horizontally and oppositely arranged on one pair of positioning supports, the two first vertical positioning assemblies are respectively arranged on the side walls of the two clamping pieces which are adjacently and vertically arranged, the laser transmitter and the laser receiver of each first vertical positioning assembly are respectively arranged on the clamp side walls of the two clamping pieces which are vertically arranged, and after the control system respectively receives the real-time monitoring data of the horizontal positioning assemblies and the first vertical positioning assemblies, the positioning of the H-shaped steel is adjusted by controlling the lengths of the telescopic rods and the adjusting rods.

Technical Field

The invention relates to the technical field of pile foundation enclosure construction, in particular to a device and a method for accurately inserting and pulling and positioning medium-sized steel in an SMW construction method.

Background

The SMW method pile is simply characterized in that a mechanical device is used for drilling and cutting a soil body, cement paste sprayed out during drilling is repeatedly stirred through a reinforcer and foundation soil, and finally H-shaped steel is inserted to form a stable underground wall body. The H-shaped steel is mainly hoisted on site by adopting a truck crane in the insertion construction, the insertion in-place work is finished by the self weight of the H-shaped steel, and the active deviation correction cannot be realized in the insertion process, so that the in-place accuracy of the H-shaped steel is poor.

Disclosure of Invention

The invention aims to provide a device and a method for accurately inserting, pulling and positioning profile steel in an SMW (soil mixing wall) construction method, aiming at solving the problem that the H-shaped steel in the existing SMW construction method cannot be actively corrected when being inserted into position by self weight, so that the positioning accuracy is poor.

The technical scheme adopted by the invention for solving the technical problems is as follows: accurate plug positioner of medium-sized steel of SMW worker method, it includes: support the support body, at least a pair of holder to and a control system, support the support body and include the locating support that a pair of vertical and interval set up, a pair of locating support sets up along triaxial stirring stake extending direction, and be located respectively the both sides of triaxial stirring stake, at least a pair of holder swing joint of vertical interval setting is between a pair of locating support, and every holder is including the clamp and the telescopic link that are connected, and the both sides flange board of H shaped steel is located respectively to the clamp of a pair of holder of level and relative setting, and the other end of holder telescopic link is connected in the locating support rather than the homonymy, and, the telescopic link and the control system signal connection of holder.

The invention relates to a precise plug-pull positioning device for profile steel in an SMW construction method, which comprises a support frame body arranged along the extension direction of a triaxial mixing pile, at least one pair of clamping pieces connected between two positioning brackets of the support frame body, and a control system, each clamping piece comprises a hoop and a telescopic rod which are connected, the hoops of a pair of clamping pieces which are horizontally and oppositely arranged are respectively sleeved on the flange plates at two sides of the H-shaped steel, the telescopic rods of the pair of clamping pieces are respectively connected with the positioning brackets at two sides of the H-shaped steel, moreover, the telescopic rod of each clamping piece is in signal connection with the control system, at least one pair of clamping pieces are sleeved on the flange plate of the H-shaped steel to play a role in limiting along the y-axis direction, and further the telescopic length of each telescopic rod is respectively adjusted through the control system, and then indirectly adjust the displacement of H shaped steel along the x axle direction to realize the automatic accurate taking one's place and initiatively rectify the deviation of H shaped steel.

Furthermore, the clamping piece further comprises a plurality of pairs of positioning gears connected to the inner wall of the clamping hoop and a driving device connected with the positioning gears, the plurality of pairs of positioning gears of the clamping piece clamp the flange plates on two sides of the H-shaped steel, and the driving device drives the positioning gears to rotate forwards or reversely so as to indirectly drive the H-shaped steel clamped between the positioning gears to be inserted or pulled out.

Furthermore, the clamping piece further comprises a plurality of adjusting rods, each positioning gear is connected with one adjusting rod, one end of each adjusting rod is connected with the rotating shaft of the corresponding positioning gear, the other end of each adjusting rod is connected to the inner wall of the corresponding clamp, and the adjusting rods are all in signal connection with the control system.

Furthermore, the laser positioning device also comprises two horizontal positioning components connected with the control system, the two horizontal positioning components are arranged on the inner side of the positioning support at intervals along the vertical direction, and each horizontal positioning component comprises a laser transmitter and a laser receiver which are horizontally and oppositely arranged on a pair of positioning supports.

Furthermore, the clamping device further comprises two first vertical positioning assemblies connected with the control system, the first vertical positioning assemblies are installed between the two adjacent clamping pieces which are vertically arranged, and each first vertical positioning assembly comprises a laser transmitter and a laser receiver which are respectively installed on the side walls of the two clamping piece clamping hoops.

Furthermore, the device also comprises two second vertical positioning assemblies connected with the control system, and the laser transmitters and the laser receivers of the two second vertical positioning assemblies are respectively installed on the positioning gears of the two clamping pieces which are adjacent and vertically arranged.

Furthermore, the flange plates on two sides of the H-shaped steel are also provided with a plurality of tooth grooves along the length direction, and the positioning gear is buckled in the tooth grooves of the H-shaped steel and tightly attached to the tooth grooves.

In addition, the invention also provides a method for accurately plugging and positioning the section steel in the SMW construction method, which comprises the following steps:

s1: constructing concrete bases which are respectively positioned at two sides of the position where the triaxial mixing pile to be constructed is positioned, and constructing to finish the triaxial mixing pile;

s2: the method comprises the steps of installing the SMW construction method medium-sized steel accurate plugging and positioning device, respectively bolting a pair of positioning supports of a support frame body to two concrete bases, movably connecting at least one pair of vertically arranged clamping pieces between the two positioning supports, lowering the H-shaped steel, sequentially sleeving clamping hoops of the at least one pair of clamping pieces on flange plates on two sides of the H-shaped steel, adjusting the length of telescopic rods of the clamping pieces through a control system, preliminarily positioning the H-shaped steel, sequentially installing subsequent sections of the H-shaped steel until the sections are inserted into the sections, and sequentially removing the H-shaped steel after the enclosing purlin is detached.

The invention discloses a method for accurately inserting, pulling and positioning section steel in an SMW construction method, which comprises the steps of firstly constructing concrete bases on two sides of a position where a triaxial mixing pile is located, constructing the triaxial mixing pile located between the two concrete bases, respectively connecting a pair of positioning supports of a support frame body to the two concrete bases, connecting two pairs of vertically arranged clamping pieces between the two positioning supports, lowering H-shaped steel, sequentially sleeving clamping hoops of the two pairs of clamping pieces on flange plates on two sides of the H-shaped steel, sleeving at least one pair of clamping pieces on the flange plates of the H-shaped steel to play a limiting role along the y-axis direction, further respectively adjusting the telescopic length of each telescopic rod through a control system, further indirectly adjusting the displacement of the H-shaped steel along the x-axis direction, realizing automatic accurate positioning and active deviation correction of the H-shaped steel, and completing preliminary positioning adjustment of the H-shaped steel.

Further, the step S2 further includes: the holder still includes many pairs of positioning gear, many regulation poles and connect in positioning gear's drive arrangement, the one end of adjusting the pole is connected with positioning gear's pivot, the other end of adjusting the pole is connected in the clamp inner wall, and adjust the pole all with control system signal connection, the location gear of holder presss from both sides behind the both sides flange plate of tight H shaped steel, adjust the flexible length of every regulation pole respectively through control system, accurate location H shaped steel, and rotate through drive arrangement drive positioning gear, indirectly drive the H shaped steel automatic insertion of centre gripping between positioning gear, the construction is accomplished and is enclosed the purlin and demolishd the back, accomplish the construction of pulling out of H shaped steel through control positioning gear reversal.

Further, the step S2 further includes: the two horizontal positioning assemblies are arranged on the positioning supports at intervals along the vertical direction, the laser transmitter and the laser receiver of each horizontal positioning assembly are horizontally and oppositely arranged on one pair of positioning supports, the two first vertical positioning assemblies are respectively arranged on the side walls of the two clamping pieces which are adjacently and vertically arranged, the laser transmitter and the laser receiver of each first vertical positioning assembly are respectively arranged on the clamp side walls of the two clamping pieces which are vertically arranged, and after the control system respectively receives the real-time monitoring data of the horizontal positioning assemblies and the first vertical positioning assemblies, the positioning of the H-shaped steel is adjusted by controlling the lengths of the telescopic rods and the adjusting rods.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a section steel accurate plugging and positioning device in an SMW construction method according to the present invention;

fig. 2 is a schematic diagram of a method for accurately inserting and positioning profile steel in an SMW process according to an embodiment of the present invention.

The numbers in the figures are as follows:

a triaxial mixing pile 1; a concrete base 2; 5, H-shaped steel; a support frame 10; a positioning bracket 11; a base 12; a clamp 22; an expansion link 21; a positioning gear 24; an adjustment lever 25; a horizontal positioning assembly 30; a first vertical positioning assembly 40; a second vertical positioning assembly 50.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.

In this embodiment, an xyz rectangular coordinate system is established with the depth direction of the foundation pit as the z-axis, and by taking the plugging and unplugging construction of the H-shaped steel 5 in the SMW method as an example, the precise plugging and unplugging positioning device for the medium-sized steel in the SMW method of the present invention is described below with reference to fig. 1 and 2, and includes: support body 10, two pairs of holders, and a control system (not shown in the figure), support body 10 includes a pair of vertical and spacing locating support 11 that sets up, a pair of locating support 11 sets up along triaxial mixing stake 1 extending direction, and be located the both sides of triaxial mixing stake 1 respectively, two pairs of holders swing joint that vertical interval set up are between a pair of locating support 11, every holder is including clamp 22 and the telescopic link 21 that are connected, the both sides flange board of H shaped steel 5 is located respectively to the clamp 22 of a pair of holders that level and relative set up, the other end of holder telescopic link 21 is connected in locating support 11 rather than the homonymy, and, the telescopic link 21 and the control system signal connection of holder.

The invention relates to a precise plug-pull positioning device for profile steel in an SMW construction method, which comprises a support frame body 10 arranged along the extension direction of a triaxial mixing pile 1, at least one pair of clamping pieces connected between two positioning brackets 11 of the support frame body 10, and a control system, each clamping piece comprises a hoop 22 and a telescopic rod 21 which are connected, the hoops 22 of a pair of clamping pieces which are horizontally and oppositely arranged are respectively sleeved on the flange plates at two sides of the H-shaped steel 5, the telescopic rods 21 of the pair of clamping pieces are respectively connected with the positioning brackets 11 at two sides, moreover, the telescopic rod 21 of each clamping piece is in signal connection with the control system, at least one pair of clamping pieces are sleeved on the flange plate of the H-shaped steel 5 to play a role in limiting along the y-axis direction, and further the telescopic length of each telescopic rod 21 is respectively adjusted through the control system, and further indirectly adjust the displacement of the H-shaped steel 5 along the x-axis direction, thereby realizing the automatic accurate positioning and active deviation correction of the H-shaped steel 5.

In order to further solve the problem that secondary damage is easily caused when a professional pile pulling machine is used for pulling out the H-shaped steel 5, and the turnover utilization rate of the H-shaped steel 5 is affected, as shown in figure 2, the clamping piece further comprises four pairs of positioning gears 24 connected to the inner wall of the clamping hoop and a driving device connected with the positioning gears 24, the four pairs of positioning gears 24 are arranged up and down and are symmetrically arranged along a web plate of the H-shaped steel 5, after the positioning gears 24 of the clamping pieces respectively clamp two side flange plates of the H-shaped steel 5, the driving device drives the positioning gears 24 to rotate forwards or reversely, the H-shaped steel 5 clamped between the positioning gears 24 is indirectly driven to be automatically inserted or pulled out, the damage to the H-shaped steel 5 in the process of plugging and pulling operation is reduced, the turnover utilization rate of the H-shaped steel 5 is improved, and for an area with limited hoisting height, the automatic plugging and pulling operation of the H-shaped steel 5 is realized by the clamping pieces, the whole process is not required to be assisted by large-scale hoisting equipment, so that the construction difficulty is reduced.

With reference to fig. 2, the clamping member further includes eight adjusting rods 25, each positioning gear 24 is connected to one adjusting rod 25, one end of each adjusting rod 25 is connected to the rotating shaft of the positioning gear 24, the other end of each adjusting rod 25 is connected to the inner wall of the hoop 22, the adjusting rods 25 are in signal connection with the control system, and the control system adjusts the telescopic length of each adjusting rod 25, so as to further achieve accurate positioning of the H-beam 5.

As shown in fig. 2, the device for accurately inserting and positioning the section steel in the SMW construction method further includes two horizontal positioning assemblies 30 connected to the control system, the two horizontal positioning assemblies 30 are arranged at intervals inside the positioning brackets 11 along the vertical direction, each horizontal positioning assembly 30 includes a laser transmitter and a laser receiver which are horizontally and oppositely arranged on a pair of the positioning brackets 11, the control system receives signals of the two horizontal positioning assemblies 30 and judges whether the H-shaped steel 5 deviates along the x-axis direction, and sends out a control signal to adjust the length of the telescopic rod 21 until the inclination of the H-shaped steel 5 along the x-axis direction meets the construction requirements.

With reference to fig. 2, the device for accurately inserting and positioning profile steel in the SMW process of the present invention further includes two first vertical positioning assemblies 40 connected to the control system, the first vertical positioning assemblies 40 are installed between two adjacent vertically arranged clamping members, and each first vertical positioning assembly 40 includes a laser transmitter and a laser receiver respectively installed on the side walls of the two clamping member clamps 22. The control system respectively receives signals of the two first vertical positioning assemblies 40 and judges whether the H-shaped steel 5 deviates along the y-axis direction; better, the accurate plug positioner of H shaped steel 5 still includes two second vertical location subassembly 50 of being connected with control system, the laser emitter and the laser receiver of two second vertical location subassembly 50 install respectively in the positioning gear 24 of two holders of adjacent and vertical setting, on the basis of the calibration of taking one's place initially at first vertical location subassembly 40, the secondary calibration of taking one's place of H shaped steel 5 is realized through second vertical location subassembly 50, to sum up, control system receives horizontal location subassembly 30 and vertical location subassembly's real-time supervision data respectively, and through control telescopic link 21, adjust the flexible construction of initiatively rectifying of H shaped steel 5 of realization of pole 25, not only degree of automation is high, and the accurate degree of H shaped steel 5 location has been improved.

Preferably, a plurality of tooth grooves are formed in the flange plates on two sides of the H-shaped steel 5 along the length direction of the H-shaped steel, the positioning gear 24 is buckled in the tooth grooves of the H-shaped steel 5 and tightly attached to the tooth grooves, the positioning gear 24 and the tooth grooves are squeezed by friction force to push the H-shaped steel 5 to be inserted or pulled out, and the H-shaped steel 5 can be inserted or pulled out under the condition that the hoisting height is limited in a segmental assembling mode.

As shown in fig. 2, the positioning bracket 11 includes a vertically arranged frame body and a base 12 vertically connected to the bottom of the frame body, the frame body is a frame formed by welding a cross rod and a vertical rod in a criss-cross manner, the base 12 is connected to the concrete bases 2 on two sides of the three-axis mixing pile 1 through fastening bolts, and the positioning device is convenient to disassemble and assemble and is beneficial to recycling.

One end of the telescopic rod 21 is connected with the vertical rod of the positioning support 11 through a bolt or in a welding mode, and the other end of the telescopic rod 21 is connected with the clamping hoop of the clamping piece through a bolt or in a welding mode, so that the telescopic rod is convenient to disassemble and assemble.

As shown in fig. 1, a plurality of bolt connection holes are pre-buried in the concrete base 2, and the base 12 of the positioning bracket 11 is bolted to the concrete base 2, and the distance between the bolt connection holes can be arranged according to the design distance of the H-shaped steel 5 and the size of the positioning bracket 11.

The method for accurately inserting and pulling profile steel in the SMW construction method is described by combining the figure 1 and the figure 2, and comprises the following specific steps:

s1: leveling land, positioning and paying off the piles in the construction method, constructing two concrete bases 2 which are respectively positioned at two sides of a to-be-constructed triaxial mixing pile 1, and constructing the triaxial mixing pile 1;

s2: a pair of locating support 11 that will support body 10 is bolted connection in two concrete bases 2 respectively, connect two pairs of holders of vertical setting between two locating support 11, transfer first festival H shaped steel 5, overlap the clamp of two pairs of holders in proper order and locate the both sides flange board of H shaped steel 5, length through control system adjustment telescopic link 21, realize the preliminary regulation of taking one's place of H shaped steel 5, install the follow-up section of H shaped steel 5 in proper order and take one's place until inserting, enclose the purlin and demolish the back, pull out H shaped steel 5.

The invention relates to a method for accurately inserting, pulling and positioning section steel in an SMW construction method, which comprises the following steps of firstly constructing concrete bases 2 at two sides of a position where a triaxial mixing pile 1 is positioned, completing construction of the triaxial mixing pile 1 positioned between the two concrete bases 2, respectively connecting a pair of positioning brackets 11 of a support frame body 10 to the two concrete bases 2, connecting two pairs of vertically arranged clamping pieces between the two positioning brackets 11, lowering H-shaped steel 5, sequentially sleeving clamping hoops of the two pairs of clamping pieces on flange plates at two sides of the H-shaped steel 5, sleeving at least one pair of clamping pieces on the flange plates of the H-shaped steel 5 to play a limiting role along the y-axis direction, and further respectively adjusting the telescopic length of each telescopic rod 21 through a control system, and further indirectly adjusting the displacement of the H-shaped steel 5 along the x-axis direction, realizing the automatic accurate positioning and active deviation correction of the H-shaped steel 5, and completing the primary positioning adjustment of the H-shaped steel 5.

The step S2 further includes: the holder still includes four pairs of positioning gear 24, eight adjust the pole 25 and connect in positioning gear 24's drive arrangement, four pairs of positioning gear 24 are upper and lower to be set up, and along H shaped steel 5's web symmetrical arrangement, the one end of adjusting the pole 25 is connected with positioning gear 24's pivot, the other end of adjusting the pole 25 is connected in clamp 22 inner wall, and adjust pole 25 all with control system signal connection, the positioning gear 24 of holder presss from both sides behind the both sides flange plate of H shaped steel 5 respectively, adjust the flexible length of every regulation pole 25 respectively through control system, realize H shaped steel 5's accurate location, drive positioning gear 24 forward rotation through drive arrangement, indirectly drive the H shaped steel 5 automatic insertion of centre gripping between positioning gear 24, the construction is accomplished and encloses the purlin and demolishs the back, accomplish the construction of pulling out of H shaped steel 5 through control positioning gear 24 reversal.

The step S2 further includes: two horizontal positioning assemblies 30 are arranged on a positioning support 11 at intervals along the vertical direction, a laser emitter and a laser receiver of each horizontal positioning assembly 30 are horizontally and oppositely arranged on a pair of positioning supports 11, two first vertical positioning assemblies 40 are respectively arranged on the side walls of two adjacent clamping pieces which are arranged up and down, the laser emitter and the laser receiver of each first vertical positioning assembly 40 are respectively arranged on the side walls of a hoop 22 of the two clamping pieces which are arranged vertically, after a control system receives real-time monitoring data of the horizontal positioning assemblies 30 and the first vertical positioning assemblies 40, the length through control telescopic link 21 and regulation pole 25 realizes the accurate location of H shaped steel 5 indirectly, that is to say, telescopic link 21 and regulation pole 25 through the monitoring data linkage with horizontal positioning component 30, perpendicular positioning component go on, have realized initiatively rectifying a deviation and accurate location H shaped steel 5.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.