CN112356262A - Stretch-draw machine and prefab production line - Google Patents
Stretch-draw machine and prefab production line Download PDFInfo
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- CN112356262A CN112356262A CN202011041439.0A CN202011041439A CN112356262A CN 112356262 A CN112356262 A CN 112356262A CN 202011041439 A CN202011041439 A CN 202011041439A CN 112356262 A CN112356262 A CN 112356262A
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- tensioning
- stretching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
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- Ceramic Engineering (AREA)
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- Reinforcement Elements For Buildings (AREA)
Abstract
The embodiment of the invention provides a tensioning machine and a prefabricated part production line. The stretching machine is used for stretching a plurality of reinforcing steel bars which extend lengthways. The tensioning machine comprises a whole tensioning device and a pre-tensioning device, the whole tensioning device and the pre-tensioning device are connected with the same end part of the longitudinal direction of the steel bar, the whole tensioning device and the pre-tensioning device stretch the steel bar in the longitudinal direction in the same direction, the positions of the whole tensioning device and the pre-tensioning device are reasonably arranged, the whole tensioning device and the pre-tensioning device are arranged between the whole tensioning device and the pre-tensioning device in a centralized mode, the tensioning machine can be favorably reduced to occupy too large space, and therefore the whole occupied area of the tensioning machine can be favorably reduced.
Description
Technical Field
The invention relates to the technical field of building industry, in particular to a tensioning machine and a prefabricated part production line.
Background
The engineering efficiency can be effectively improved by adopting the prefabricated member for installation and construction in the field of building industry. In the production process of the prefabricated member, the steel bars are tensioned to generate prestress on the steel bars, so that the crack resistance of the prefabricated member is improved.
At present, in the process of stretching steel bars, the steel bars are generally conveyed to a pre-stretching position for pre-stretching, then the whole batch of steel bars which are subjected to pre-stretching are conveyed to a whole stretching position for integral stretching, however, the required space position is larger due to the mode of stretching the steel bars.
Disclosure of Invention
The embodiment of the invention provides a tensioning machine and a prefabricated part production line, which aim to solve the technical problems.
The embodiment of the invention achieves the above object by the following technical solutions.
In a first aspect, embodiments of the present invention provide a tensioning machine for tensioning a plurality of longitudinally extending rebars. The tensioning machine comprises integral tensioning equipment and pre-tensioning equipment, the integral tensioning equipment and the pre-tensioning equipment are connected with the same end part of the reinforcing steel bar in the longitudinal direction, and the integral tensioning equipment and the pre-tensioning equipment stretch the reinforcing steel bar in the longitudinal direction in the same direction.
The tensioning machine provided by the embodiment of the invention can pre-tension the steel bar through the pre-tensioning equipment, and then secondarily tension the steel bar through the integral tensioning equipment, and the integral tensioning equipment and the pre-tensioning equipment are connected with the same end part of the steel bar in the longitudinal direction, so that the integral tensioning equipment and the pre-tensioning equipment can tension the steel bar in the same direction in the longitudinal direction, the positions of the integral tensioning equipment and the pre-tensioning equipment are reasonably arranged, the arrangement between the integral tensioning equipment and the pre-tensioning equipment is more concentrated, the overlarge space occupied by the tensioning machine is favorably reduced, and the integral occupied area of the tensioning machine is favorably reduced. In addition, in the process of stretching the steel bar, one end part of the steel bar is generally fixed on the steel bar anchoring table, so that the stretching machine can conveniently stretch the steel bar by being connected to the other end part of the steel bar, and the integral stretching equipment and the pre-stretching equipment in the embodiment of the invention are connected with the same end part of the steel bar in the longitudinal direction, so that the pre-stretching equipment and the integral stretching equipment can share the same steel bar anchoring table to respectively perform pre-stretching and integral stretching, and the additional arrangement of the steel bar anchoring table can be omitted.
In some embodiments, the unitary tensioning device includes a connected tensioning device and a rebar anchoring mechanism. The end part penetrates through and is fixed on the steel bar anchoring mechanism along the longitudinal direction, and the tensioning movement of the tensioning device drives the steel bar anchoring mechanism to synchronously move along the tensioning direction. The pre-tensioning equipment is positioned at the front end of the moving direction of the steel bar anchoring mechanism and is connected with the end part penetrating out of the steel bar anchoring mechanism.
The integral tensioning equipment provided by the embodiment of the invention is matched with the end part of the steel bar through the steel bar anchoring mechanism, and the movement of the steel bar anchoring mechanism is realized through the tensioning device, so that the structural division of the integral tensioning equipment is reasonable. In addition, the pre-tensioning equipment is positioned at the front end of the moving direction of the steel bar anchoring mechanism, so that the steel bar anchoring mechanism is prevented from blocking the movement of the pre-tensioning equipment along the tensioning direction, and the pre-tensioning equipment can conveniently pre-tension the steel bars.
In some embodiments, the tensioning device includes a first tensioning mechanism, a second tensioning mechanism, and a steel bar anchoring mechanism, the steel bar anchoring mechanism is transversely connected between the first tensioning mechanism and the second tensioning mechanism, and the tensioning movements of the first tensioning mechanism and the second tensioning mechanism drive the steel bar anchoring mechanism to synchronously move in parallel along the tensioning direction. The pre-tensioning equipment is positioned in a space surrounded by the first tensioning mechanism, the second tensioning mechanism and the steel bar anchoring mechanism.
The pretensioning equipment of the tensioning machine is positioned in the space surrounded by the first tensioning mechanism, the second tensioning mechanism and the steel bar anchoring mechanism of the integral tensioning equipment, the positions of the pretensioning equipment and the integral tensioning equipment are reasonably arranged, the space position occupied by the integral tensioning equipment is fully utilized, excessive space positions occupied by the pretensioning equipment are reduced, and the integral occupied area of the tensioning machine is further reduced.
In some embodiments, the pre-tensioning device further includes a pre-tensioning support and a plurality of pre-tensioning mechanisms, the plurality of pre-tensioning mechanisms are arranged in sequence transversely and connected with the plurality of end portions one by one, each pre-tensioning mechanism is independent from each other and is slidably mounted on the pre-tensioning support along the longitudinal direction, and the sliding direction of the pre-tensioning mechanisms is parallel to the tensioning direction of the tensioning device.
The pre-tensioning equipment provided by the embodiment of the invention is convenient for a plurality of pre-tensioning mechanisms to be capable of tensioning different moving strokes, so that the reinforcing steel bars with different relaxities can be pre-tensioned to the same or approximately the same tensioning state, and the pre-tensioning equipment is favorable for ensuring that the prestress generated by each reinforcing steel bar is the same or approximately the same after the reinforcing steel bars are tensioned for the second time by the whole tensioning equipment.
In some embodiments, the pretensioning apparatus further includes a moving mechanism, the moving mechanism carries the pretensioning support, the moving mechanism is configured to move the pretensioning support, the moving mechanism has at least one of a longitudinal moving path and a transverse moving path, the moving mechanism moving along the longitudinal moving path moves along a sliding direction of the pretensioning mechanism, and the moving mechanism moving along the transverse moving path moves along an arrangement direction of the plurality of pretensioning mechanisms.
The moving mechanism of the pre-tensioning device can drive the pre-tensioning support to move along the longitudinal moving path, and the moving mechanism moving along the longitudinal moving path moves along the sliding direction of the pre-tensioning mechanism, so that the pre-tensioning support can provide a stroke moving along the tensioning direction for the pre-tensioning mechanism under the condition that the sliding stroke of the pre-tensioning mechanism is insufficient. The moving mechanism can also drive the pre-tensioning support to move along the transverse moving path, and the moving mechanism moving along the transverse moving path moves along the arrangement direction of the pre-tensioning mechanisms, so that the pre-tensioning mechanisms are suitable for pre-tensioning a plurality of reinforcing steel bars in different batches respectively. In addition, the lateral movement of the pretensioning bracket also facilitates pretensioning of a plurality of steel bars adapted to different spacing requirements.
In some embodiments, the unitary tensioning device has an abutment surface arranged in series with the pre-tensioning mechanism along the tensioning direction, the end portion passing through the abutment surface along the tensioning direction. The pre-tensioning mechanism comprises a pushing part and a barrel, the pushing part is slidably sleeved on the barrel along the longitudinal direction, and the barrel is fixedly connected with the end part. The pushing portion pushes the abutting surface in the direction opposite to the stretching direction, the cylinder body moves in the stretching direction and drives the end portion to move in the stretching direction so as to achieve pre-stretching.
The pretensioning mechanism can realize accurate pretensioning force through the control system, for example, in the process of controlling the pretensioning mechanism to stretch, the control system can control the cylinder to move relative to the pushing part along the tensioning direction, and as the abutting surface and the pretensioning mechanism are sequentially arranged along the tensioning direction, the pushing part abuts against the abutting surface and is kept still, the pushing part pushes the abutting surface along the direction opposite to the tensioning direction, so that the cylinder can drive the end part of the steel bar to stretch along the tensioning direction to realize pretensioning.
In some embodiments, the bar anchoring mechanism includes a bar anchoring insert and a tension moving frame, the tension moving frame is connected between the first tension mechanism and the second tension mechanism, and the bar anchoring insert is detachably mounted to the tension moving frame.
The steel bar anchoring inserting plate provided by the embodiment of the invention can save anchor dismounting operation of the steel bars and the wire drawing vehicle and anchor operation of the steel bars and the tensioning machine, is not only beneficial to improving the universality of the steel bar anchoring inserting plate, but also beneficial to reducing the steps of a steel bar tensioning process and improving the working efficiency.
In some embodiments, the rebar anchoring insert includes an insert body and a rebar anchor fixedly connected to the insert body.
In the process of carrying out the steel bar stretching process by the stretching machine, the steel bar anchorage device cannot move along with the stretching of the steel bar, so that the subsequent resetting operation of the steel bar anchorage device can be omitted.
In some embodiments, the first tensioning mechanism includes a first support frame and a first telescopic assembly, the first support frame is provided with a first sliding groove, and the length direction of the first sliding groove is the same as the telescopic direction of the first telescopic assembly. The second tensioning mechanism comprises a second supporting frame and a second telescopic assembly, the second supporting frame is provided with a second sliding groove, and the length direction of the second sliding groove is the same as the telescopic direction of the second telescopic assembly. One end of the tensioning moving frame is installed in the first sliding groove and connected with the first telescopic assembly, and the other end of the tensioning moving frame is installed in the second sliding groove and connected with the second telescopic assembly.
According to the stretching machine provided by the embodiment of the invention, the stretching moving frame can slide in the first sliding groove and the second sliding groove respectively through the first telescopic assembly and the second telescopic assembly.
In some embodiments, the first telescopic assembly includes a first cylinder and a first telescopic rod, the first cylinder is connected with the first support frame, the first telescopic rod is connected with the tension moving frame, and the telescopic motion of the first telescopic rod drives the tension moving frame to move. The second telescopic assembly comprises a second barrel and a second telescopic rod, the second barrel is connected with the second supporting frame, the second telescopic rod is connected with the tensioning moving frame, and the telescopic motion of the second telescopic rod drives the tensioning moving frame to move.
According to the integral tensioning equipment disclosed by the embodiment of the invention, the telescopic range of the first telescopic rod of the first telescopic assembly is arranged in the first support frame, so that the additional occupied space position of the first telescopic rod in the telescopic process is reduced; meanwhile, the telescopic range of the second telescopic rod of the second telescopic assembly is arranged in the second support frame, so that the space position additionally occupied by the second telescopic rod in the telescopic process is reduced.
In some embodiments, the first supporting frame is further provided with a first limiting groove, the first limiting groove is communicated with the first sliding groove, the first tensioning mechanism further comprises a first limiting member, the first limiting member is detachably mounted in the first limiting groove, and the first limiting member mounted in the first limiting groove limits the movement of the tensioning movable frame. The second supporting frame is further provided with a second limiting groove, the second limiting groove is communicated with the second sliding groove, the second tensioning mechanism further comprises a second limiting part, the second limiting part is detachably mounted in the second limiting groove, and the second limiting part mounted in the second limiting groove limits movement of the tensioning moving frame.
According to the tensioning machine provided by the embodiment of the invention, the first limiting piece is arranged in the first limiting groove, and the second limiting piece is arranged in the second limiting groove, so that the movement of the steel bar anchoring mechanism in the first sliding groove and the second sliding groove can be prevented, at the moment, even if the first telescopic assembly or the second telescopic assembly stops working due to failure, the steel bar anchoring mechanism cannot be retracted, the prestress of the steel bar connected to the steel bar anchoring mechanism cannot be lost, and the working stability of the tensioning machine is favorably provided.
In a second aspect, embodiments of the present invention also provide a preform production line comprising the stretch-draw machine of any of the above embodiments.
In the prefabricated part production line provided by the embodiment of the invention, the stretching machine can pre-stretch the steel bar through the pre-stretching equipment, and then the integral stretching equipment is used for stretching the steel bar for the second time. In addition, in the process of stretching the steel bar, one end part of the steel bar is generally fixed on the steel bar anchoring table, so that the stretching machine can conveniently stretch the steel bar by being connected to the other end part of the steel bar, and the integral stretching equipment and the pre-stretching equipment in the embodiment of the invention are connected with the same end part of the steel bar in the longitudinal direction, so that the pre-stretching equipment and the integral stretching equipment can share the same steel bar anchoring table to respectively perform pre-stretching and integral stretching, and the additional arrangement of the steel bar anchoring table can be omitted.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a stretching machine according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of the stretching machine of fig. 1 from another view angle.
Fig. 3 is a schematic partial structural diagram of a stretching machine according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a stretching machine according to an embodiment of the present invention.
Fig. 5 is an enlarged schematic view at V of the stretching machine of fig. 4.
Fig. 6 is a schematic structural view of a reinforcing bar anchoring insert plate of the stretching machine of fig. 5.
Reference numerals
The integral tensioning device 10, the tensioning machine 100, the first tensioning mechanism 11, the first support 111, the first sliding slot 1111, the first limit slot 1113, the first telescopic assembly 113, the first cylinder 1131, the first telescopic rod 1133, the first limit piece 115, the first support pin 117, the second tensioning mechanism 12, the second support 121, the second sliding slot 1211, the second limit slot 1213, the second telescopic assembly 123, the second cylinder 1231, the second limit piece 125, the second support pin 127, the steel bar anchoring mechanism 13, the steel bar anchoring insertion plate 131, the tension moving frame 133, the clamping groove 1331, the flashboard main body 1311, the steel bar anchorage 1313, the anchorage housing 1312, the clamping piece 1314, the elastic piece 1316, the shell cover 1318, the abutting surface 135, the tension device 14, the steel bar anchoring table 15, the I-steel 16, the pre-tension equipment 20, the pre-tension mechanism 21, the pushing part 211, the barrel body 213, the pre-tension bracket 23, the sliding guide groove 231, the moving mechanism 25 and the ground 300.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the attached drawings. It is to be understood that the described embodiments are merely exemplary of some, and not necessarily all, embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1 and 2, in an embodiment of the invention, a tensioning machine 100 is provided, and the tensioning machine 100 may tension a plurality of reinforcing bars 200 extending lengthwise, so that the reinforcing bars 200 generate prestress.
The tensioning machine 100 comprises a pre-tensioning device 20 and a whole tensioning device 10, the pre-tensioning device 20 can pre-tension the steel bars 200, the whole tensioning device 10 can tension the steel bars 200 for the second time, and the pre-tensioning device 20 can pre-tension the steel bars 200 with different relaxities to the same or approximately the same tensioning state, so that the pre-tension generated by each steel bar 200 is the same or approximately the same after the whole tensioning device 10 tensions the steel bars 200 for the second time. Wherein, the tensioning machine 100 can cooperate with the steel bar anchoring table 15 to tension the steel bar 200, for example, one end of the steel bar 200 can be anchored to the steel bar anchoring table 15, so that the tensioning machine 100 can tension the steel bar 200 by connecting to the other end of the steel bar 200.
The unitary tensioning device 10 may include a tensioning device 14 and a rebar anchoring mechanism 13, with the tensioning device 14 and the rebar anchoring mechanism 13 connected. The steel bar anchoring mechanism 13 is used for anchoring with the steel bars 200, so that the tensioning movement of the tensioning device 14 drives the steel bar anchoring mechanism 13 to synchronously move along the tensioning direction, for example, the tensioning movement of the tensioning device 14 drives the steel bar anchoring mechanism 13 to move along the direction deviating from the steel bar anchoring table 15, thereby realizing the tensioning of the steel bars 200.
The tensioning device 14 may include a first tensioning mechanism 11 and a second tensioning mechanism 12. The steel bar anchoring mechanism 13 is transversely connected between the first tensioning mechanism 11 and the second tensioning mechanism 12, and the tensioning movement of the first tensioning mechanism 11 and the second tensioning mechanism 12 drives the steel bar anchoring mechanism 13 to synchronously move in parallel along the tensioning direction.
The first tensioning mechanism 11 may include a first support frame 111 and a first telescopic assembly 113, the first support frame 111 carries the rebar anchoring mechanism 13, and the first telescopic assembly 113 may be used to connect with the rebar anchoring mechanism 13 and enable sliding of the rebar anchoring mechanism 13 relative to the first support frame 111.
The outer contour of the first support frame 111 may be rectangular parallelepiped. The first supporting frame 111 is provided with a first sliding groove 1111, and the first sliding groove 1111 is used for accommodating the steel bar anchoring mechanism 13. The length direction of the first sliding groove 1111 may be the same as the telescopic direction of the first telescopic assembly 113, so that the reinforcing bar anchoring mechanism 13 slides along the first sliding groove 1111 under the telescopic movement of the first telescopic assembly 113.
The first supporting frame 111 may further have a first limiting groove 1113, and the first limiting groove 1113 is communicated with the first sliding groove 1111. The first limiting groove 1113 is configured to cooperate with a limiting member, so as to limit the sliding of the steel bar anchoring mechanism 13 through the limiting member. For example, the first tensioning mechanism 11 may further include a first limiting member 115, the first limiting member 115 is detachably mounted in the first limiting groove 1113, and the first limiting member 115 mounted in the first limiting groove 1113 limits movement of the tension moving frame 133, so that after the first telescopic assembly 113 drives the steel bar anchoring mechanism 13 to slide and tension the steel bar 200, the first limiting member 115 is mounted in the first limiting groove 1113, so as to block movement of the steel bar anchoring mechanism 13 in the first sliding groove 1111, even if the first telescopic assembly 113 stops working due to a fault, the steel bar anchoring mechanism 13 will not be retracted, and then the prestress of the steel bar 200 connected to the steel bar anchoring mechanism 13 will not be lost, which is helpful for providing stability of the operation of the tensioning machine 100.
In addition, after the tensioning process of the reinforcing bar 200 is completed, the first limiting member 115 may be withdrawn and detached from the first limiting groove 1113, thereby facilitating the tensioning machine 100 to perform the next tensioning process.
Referring to fig. 3, the first telescopic assembly 113 may include a first cylinder 1131 and a first telescopic rod 1133, the first cylinder 1131 may be connected to the first support frame 111, for example, the first cylinder 1131 may be connected to the outside of the first support frame 111. First telescopic link 1133 can stretch into first spout 1111 from first barrel 1131 in, for example, first telescopic link 1133 can be connected with the structure that is located first spout 1111 of reinforcing bar anchor mechanism 13, not only can make the concertina movement of first telescopic link 1133 drive reinforcing bar anchor mechanism 13 and move, moreover because the flexible scope of first telescopic link 1133 is located first support 111, still help reducing the additional spatial position that occupies of first telescopic link 1133 in flexible process. The first telescopic assembly 113 may be a hydraulic cylinder, the first cylinder 1131 may be a cylinder, and the first telescopic rod 1133 may be a piston rod.
The first tensioning mechanism 11 may further include a first supporting leg 117, and the first supporting leg 117 is used for fixing with the ground 300 to improve the stability of the first tensioning mechanism 11. The first supporting leg 117 may be made of carbon structural steel, so that the structure of the first supporting leg 117 is not easily deformed. A part of the structure of the first supporting leg 117 may be buried in concrete, for example, the bottom of the first supporting leg 117 is provided with an anchor bolt mounting hole, and the first supporting leg 117 is fixed by being matched with a bolt before the concrete is poured, so that the position of the first supporting leg 117 can be prevented from being shifted in the process of pouring the concrete.
The number of the first supporting legs 117 may be plural, for example, in the present embodiment, the number of the first supporting legs 117 is two, one of the first supporting legs 117 is connected to the first telescopic assembly 113, for example, may be connected to the first cylinder 1131 of the first telescopic assembly 113, and the other first supporting leg 117 may be connected to the first supporting frame 111, so that the stability of the first tensioning mechanism 11 may be enhanced.
Referring again to fig. 1 and 2, the structure of the second tensioning means 12 may be the same as or different from the structure of the first tensioning means 11. In the present embodiment, the second tension mechanism 12 has the same structure as the first tension mechanism 11. For example, the second tensioning mechanism 12 may include a second support frame 121 and a second telescopic assembly 123, the second support frame 121 carrying the rebar anchoring mechanism 13, and the second telescopic assembly 123 may be used to connect with the rebar anchoring mechanism 13 and enable sliding of the rebar anchoring mechanism 13 relative to the second support frame 121. Wherein the tensioning direction of the second tensioning mechanism 12 is the same as that of the first tensioning mechanism 11
The outer contour of the second support frame 121 may be rectangular. The second supporting frame 121 has a second sliding slot 1211, and the second sliding slot 1211 is used for receiving the reinforcing steel bar anchoring mechanism 13. The length direction of the second slide groove 1211 may be the same as the telescopic direction of the second telescopic assembly 123, so that the reinforcing bar anchoring mechanism 13 slides along the second slide groove 1211 under the telescopic movement of the second telescopic assembly 123.
The second supporting frame 121 may further have a second limiting groove 1213, and the second limiting groove 1213 is in communication with the second sliding groove 1211. The second limiting groove 1213 is adapted to cooperate with a limiting member so as to limit the sliding of the bar anchoring mechanism 13 by the limiting member. For example, the second tensioning mechanism 12 may further include a second limiting member 125, the second limiting member 125 is detachably mounted in the second limiting groove 1213, and the second limiting member 125 mounted in the second limiting groove 1213 limits the movement of the tensioning moving frame 133, so that after the second telescopic assembly 123 drives the steel bar anchoring mechanism 13 to slide and tension the steel bar 200, the second limiting member 125 is mounted in the second limiting groove 1213, so as to block the movement of the steel bar anchoring mechanism 13 in the second sliding groove 1211, even if the second telescopic assembly 123 stops working due to a fault, the steel bar anchoring mechanism 13 will not be retracted, and then the prestress of the steel bar 200 connected to the steel bar anchoring mechanism 13 will not be lost, which is helpful for providing the working stability of the tensioning machine 100.
In addition, after the tensioning process of the reinforcing bar 200 is completed, the second stopper 125 may be withdrawn and detached from the second stopper groove 1213, thereby facilitating the next two tensioning processes of the tensioning machine 100.
The second telescopic assembly 123 may include a second cylinder 1231 and a second telescopic rod (not shown), the second cylinder 1231 may be connected to the second support frame 121, for example, the second cylinder 1231 may be connected to the outside of the second support frame 121. The second telescopic rod can extend into the second sliding slot 1211 from the second cylinder 1231, for example, the second telescopic rod can be connected with the structure of the reinforcing bar anchoring mechanism 13, which is located in the second sliding slot 1211, so that not only the telescopic motion of the second telescopic rod can drive the reinforcing bar anchoring mechanism 13 to move, but also the telescopic range of the second telescopic rod is located in the second supporting frame 121, which is helpful to reduce the additional occupied space position of the second telescopic rod in the telescopic process. The second telescopic assembly 123 may be a hydraulic cylinder, and then the second cylinder 1231 may be a cylinder, and the second telescopic rod may be a piston rod.
The second tensioning mechanism 12 may further include a second support leg 127, and the second support leg 127 is used for fixing with the ground 300 to improve the stability of the second tensioning mechanism 12. The second supporting leg 127 can be made of carbon structural steel, so that the structure of the second supporting leg 127 is not easy to deform. A part of the structure of the second support leg 127 may be buried in concrete, for example, the bottom of the second support leg 127 is provided with an anchor bolt mounting hole, and the second support leg 127 is fixed by being matched with a bolt before concrete is poured, so that the position of the second support leg 127 can be prevented from being deviated in the process of concrete pouring. In addition, before concrete is poured, the second supporting leg 127 can be fixedly connected with the first supporting leg 117 through the i-steel 16, so that not only can the stability of the first tensioning mechanism 11 and the second tensioning mechanism 12 be enhanced, but also the contact area between the concrete and the tensioning device 14 can be increased, and the structure that the first tensioning mechanism 11 and the second tensioning mechanism 12 are buried in the ground 300 is firmer.
The number of the second support legs 127 may be plural, for example, in the present embodiment, the number of the second support legs 127 is two, one of the second support legs 127 is connected to the second telescopic assembly 123, for example, may be connected to the first cylinder 1231 of the first telescopic assembly 123, and the other second support leg 127 may be connected to the second support frame 121, so that the stability of the second tensioning mechanism 12 may be enhanced.
Referring to fig. 2, the reinforcing bar anchoring mechanism 13 is used for anchoring the reinforcing bar 200, and an end of the reinforcing bar 200 penetrates and is fixed to the reinforcing bar anchoring mechanism 13 along the longitudinal direction. The reinforcing bar anchoring mechanism 13 may include a reinforcing bar anchoring insert 131 and a tension moving frame 133, the reinforcing bar anchoring insert 131 being used to anchor the reinforcing bars 200, and the tension moving frame 133 being used to be connected with the first and second tension mechanisms 11 and 12.
The stretching moving frame 133 may be connected between the first stretching mechanism 11 and the second stretching mechanism 12, one end of the stretching moving frame 133 is installed in the first sliding groove 1111 and connected to the first telescopic assembly 113, for example, one end of the stretching moving frame 133 is connected to an end of the first telescopic rod 1133 of the first telescopic assembly 113, which is away from the first cylinder 1131, and the stretching movement of the first telescopic rod 1133 drives the stretching moving frame 133 to move; the other end of the tension moving frame 133 is installed in the second sliding slot 1211 and connected to the second telescopic assembly 123, for example, the other end of the tension moving frame 133 is connected to an end of the second telescopic rod of the second telescopic assembly 123 away from the second cylinder 1231, and the telescopic motion of the second telescopic rod drives the tension moving frame 133 to move, so that the tension motions of the first tension mechanism 11 and the second tension mechanism 12 drive the tension moving frame 133 to slide.
Referring to fig. 4 and 5, the bar anchoring insertion plate 131 is detachably mounted to the tension moving frame 133, for example, the tension moving frame 133 may be provided with a slot 1331, and the slot 1331 is used for cooperating with the bar anchoring insertion plate 131 to detachably connect the bar anchoring insertion plate 131 and the tension moving frame 133.
Because the steel bar anchoring insertion plate 131 can be separated from the tensioning movable frame 133, the tensioning machine 100 can be helped to detach the steel bar anchoring insertion plate 131 from the tensioning movable frame 133 and anchor the steel bar 200 as a wire drawing plate on a wire drawing vehicle before the steel bar 200 tensioning process, and after the wire drawing vehicle carries the steel bar 200 and the steel bar anchoring insertion plate 131 to the tensioning machine 100 together, the steel bar anchoring insertion plate 131 can be directly reinstalled on the tensioning movable frame 133 and the steel bar 200 tensioning process is carried out, so that the anchor detaching operation of the steel bar 200 and the wire drawing vehicle and the anchoring operation of the steel bar 200 and the tensioning machine 100 can be omitted, the universality of the steel bar anchoring insertion plate 131 can be helped to be improved, the steps of the steel bar 200 tensioning process can be helped to be reduced, and the working efficiency can be improved.
Bar anchoring insert 131 may comprise an insert body 1311 and bar anchors 1313, insert body 1311 being connected to bar anchors 1313. After the bar-anchoring insertion plate 131 is installed on the tension moving frame 133, the insertion plate main body 1311 may be accommodated in the slot 1331, and the bar anchors 1313 may be located outside the slot 1331.
Reinforcing steel bar anchorage 1313 can be fixed connection in picture peg main part 1311, for example reinforcing steel bar anchorage 1313 and picture peg main part 1311 can carry out fixed connection through threaded connection, so, because reinforcing steel bar anchorage 1313 is fixed relatively with picture peg main part 1311, in the process of tensioning machine 100 carrying out reinforcing bar 200 stretch-draw process, reinforcing steel bar anchorage 1313 can not take place to remove along with the stretch-draw of reinforcing bar 200 to subsequent reset operation of reinforcing steel bar anchorage 1313 can have been saved.
Referring to fig. 6, the steel anchorage 1313 may include an anchorage housing 1312, a clamping piece 1314, an elastic piece 1316, and a cover 1318, wherein the anchorage housing 1312 is fixedly connected to the board body 1311, the clamping piece 1314, the elastic piece 1316, and the cover 1318 are all mounted on the anchorage housing 1312, and the elastic piece 1316 abuts between the clamping piece 1314 and the cover 1318. Because the clips 1314 are used to grip the bar 200 and the clips 1314 are installed in tapered holes in the anchor housing 1312, when a force is applied to the bar 200 from the spring 1316 in the direction of the clips 1314, the gripping force of the clips 1314 on the bar 200 increases and causes the bar 200 to be fixed relative to the bar anchor 1313, thereby effecting anchoring of the bar anchor 1313 to the bar 200. When a force is applied to the reinforcement bar 200 from the jaws 1314 in the direction of the resilient member 1316, the clamping force of the jaws 1314 on the reinforcement bar 200 is reduced and causes relative sliding between the reinforcement bar 200 and the reinforcement anchor 1313, thereby enabling the reinforcement anchor 1313 and the reinforcement bar 200 to be undone.
Additionally, the housing cover 1318 may be threadably coupled to the anchor housing 1312 to facilitate adjusting the clamping force of the clips 1314 on the reinforcement 200 by adjusting the degree to which the housing cover 1318 is threaded into the anchor housing 1312.
Referring to fig. 2 and 5, the integral tensioning device 10 may further have an abutting surface 135, the abutting surface 135 may be located on the steel bar anchoring mechanism 13, for example, the abutting surface 135 may be located on the tensioning moving frame 133 of the steel bar anchoring mechanism 13. The abutment surface 135 may be used for the pretensioning device 20 to make an abutment fit. The end of the reinforcing bar 200 may pass through the abutment surface 135 in the tensioning direction.
The pre-tensioning equipment 20 and the integral tensioning equipment 10 are connected with the same end part of the reinforcing steel bar 200 in the longitudinal direction, and the pre-tensioning equipment 20 and the integral tensioning equipment 10 tension the reinforcing steel bar 200 in the same direction in the longitudinal direction, so that the positions of the integral tensioning equipment 10 and the pre-tensioning equipment 20 are reasonably arranged, the arrangement between the two is concentrated, the overlarge space position occupied by the tensioning machine 100 is favorably reduced, and the whole occupied area of the tensioning machine 100 is favorably reduced.
The pre-tensioning device 20 may be located at a front end of the movement direction of the steel bar anchoring mechanism 13, for example, the pre-tensioning device 20 may be located at one side of the abutting surface 135 of the steel bar anchoring mechanism 13, which prevents the steel bar anchoring mechanism 13 from blocking the movement of the pre-tensioning device 20 in the tensioning direction, thereby facilitating the pre-tensioning device 20 to pre-tension the steel bar 200.
The pretensioning device 20 is connected with the end of the steel bar 200 penetrating through the steel bar anchoring mechanism 13, for example, the pretensioning device 20 can be located in a space surrounded by the first tensioning mechanism 11, the second tensioning mechanism 12 and the steel bar anchoring mechanism 13, the positions of the pretensioning device 20 and the overall tensioning device 10 are reasonably arranged, the spatial position occupied by the overall tensioning device 10 is fully utilized, and the excessive spatial position occupied by the pretensioning device 20 is reduced.
The pre-tensioning device 20 may include a pre-tensioning mechanism 21, and the pre-tensioning device 20 may pre-tension the reinforcing bars 200 through the pre-tensioning mechanism 21. Pretension mechanism 21 and reinforcing bar anchor platform 15 can be located reinforcing bar anchor mechanism 13's the both sides that carry on mutually back respectively, and pretension equipment 20 of being convenient for can utilize reinforcing bar anchor platform 15, reinforcing bar anchor mechanism 13 isotructure to carry out pretension to reinforcing bar 200 to can save and repeatedly add reinforcing bar anchor platform 15, reinforcing bar anchor mechanism 13 isotructure, help simplifying pretension equipment 20's structure.
In addition, in order to facilitate the structure of the pre-tensioning device 20, structures such as the steel bar anchoring table 15 and the steel bar anchoring mechanism 13 may be applied, and the pre-tensioning device 20 may further include a pre-tensioning mechanism 21, and a tensioning direction of the pre-tensioning mechanism 21 is the same as a tensioning direction of the first tensioning mechanism 11.
In the process of pretensioning by the pretensioning mechanism 21, one end portion of the reinforcing bar 200 is anchored to the reinforcing bar anchoring table 15, the other end portion of the reinforcing bar 200 is inserted into the reinforcing bar anchoring mechanism 13, and the pretensioning mechanism 21 can be connected to the other end portion of the reinforcing bar 200. Since the force applied to the reinforcing bars 200 from the reinforcing bar anchoring mechanism 13 toward the pre-tensioning mechanism 21 causes the reinforcing bars 200 to move relative to the reinforcing bar anchoring mechanism 13, the reinforcing bar anchoring mechanism 13 does not block the pre-tensioning process of the pre-tensioning mechanism 21.
The pretensioning mechanism 21 may be a hydraulic cylinder, for example, the pretensioning mechanism 21 may include a pushing portion 211 and a cylinder 213, and the pushing portion 211 is slidably sleeved on the cylinder 213 along the longitudinal direction. The end of the reinforcing bar 200 is fixed to the cylinder 213 by passing the pushing portion 211 in the longitudinal direction. The pushing portion 211 abuts against the integral tensioning device 10, for example, the pushing portion 211 may abut against an abutting surface 135 of the integral tensioning device 10, so that the pretensioning mechanism 21 may realize an accurate pretensioning force through a control system, for example, in a process of controlling tensioning of the pretensioning mechanism 21, the control system may control the cylinder 213 to move along a tensioning direction relative to the pushing portion 211, since the abutting surface 135 and the pretensioning mechanism 21 are sequentially arranged along the tensioning direction, and the pushing portion 211 abuts against the abutting surface 135 and remains stationary, the pushing portion 211 pushes the abutting surface 135 along a direction opposite to the tensioning direction, so that the cylinder 213 may drive an end of the steel bar 200 to be tensioned along the tensioning direction to realize pretensioning.
Referring to fig. 5, the pre-stretching device 20 may further include a pre-stretching bracket 23, the pre-stretching mechanism 21 is slidably mounted on the pre-stretching bracket 23 along a longitudinal direction, and a sliding direction of the pre-stretching mechanism 21 is parallel to a stretching direction of the pre-stretching mechanism 21. For example, the pre-tensioning bracket 23 is provided with a sliding guide groove 231, the longitudinal direction of the sliding guide groove 231 is the same as the tensioning direction of the pre-tensioning mechanism 21, and the pre-tensioning mechanism 21 is slidably mounted in the sliding guide groove 231.
The number of the pre-tensioning mechanisms 21 is multiple, and the multiple pre-tensioning mechanisms 21 are connected with the multiple end portions one by one, that is, each pre-tensioning mechanism 21 is connected with the end portion of a corresponding reinforcing steel bar 200. The pretensioning means 21 are arranged in succession transversely, for example from the first tensioning means 11 in the direction of the second tensioning means 12. The pre-tensioning mechanisms 21 are independent from each other, so that the pre-tensioning mechanisms 21 can tension different moving strokes, and the reinforcing steel bars 200 with different relaxities can be pre-tensioned to the same or approximately the same tensioning state, thereby being helpful for ensuring that the prestress generated by each reinforcing steel bar 200 is the same or approximately the same after the integral tensioning equipment 10 performs secondary tensioning on the reinforcing steel bars 200.
The pre-tensioning device 20 may further include a moving mechanism 25, where the moving mechanism 25 carries the pre-tensioning support 23, and the moving mechanism 25 is configured to drive the pre-tensioning support 23 to move. The moving mechanism 25 has at least one of a longitudinal moving path and a lateral moving path, and the moving mechanism 25 moving along the longitudinal moving path moves in the sliding direction of the pre-tensioning mechanisms, and the moving mechanism 25 moving along the lateral moving path moves in the arrangement direction of the plurality of pre-tensioning mechanisms.
For example, the moving mechanism 25 has a longitudinal moving path, and since the moving mechanism 25 moving along the longitudinal moving path moves along the sliding direction of the pre-tensioning mechanism 21, the pre-tensioning bracket 23 is convenient to provide a stroke for the pre-tensioning mechanism 21 to move along the tensioning direction in the case that the sliding stroke of the pre-tensioning mechanism 21 is insufficient.
For another example, the moving mechanism 25 has a transverse moving path, and since the moving mechanism 25 moving along the transverse moving path moves along the arrangement direction of the plurality of pre-tensioning mechanisms 21, the pre-tensioning mechanisms 21 are adapted to pre-tension the plurality of reinforcing bars 200 of different batches, respectively.
In addition, the movement of the pre-tensioning bracket 23 along the transverse moving path is also helpful to pre-tensioning a plurality of steel bars 200 adapted to different spacing requirements, in the case that the spacing between two adjacent steel bars 200 is smaller than the spacing between two adjacent pre-tensioning mechanisms 12, for example, when the spacing value of two adjacent pre-tensioning mechanisms 12 is twice the spacing value of two adjacent steel bars 200, the plurality of steel bars 200 are arranged in sequence along the transverse direction as the 1 st steel bar, the 2 nd steel bar, and the 3 rd steel bar … … nth steel bar (N is an even number), so that the pre-tensioning mechanisms 12 can pre-tension the 1 st steel bar, the 3 rd steel bar, and the 5 th steel bar … … nth-1 steel bar, and then move the appropriate positions transversely and pre-tension the 2 nd steel bar, the 4 th steel bar, and the 6 th steel bar … … nth steel bar.
For another example, the moving mechanism 25 has both a longitudinal moving path and a transverse moving path, and the functions, effects, and the like of the moving mechanism 25 along the longitudinal moving path and the transverse moving path are described above.
The moving mechanism 25 may be a wheel, the type of the wheel may be adjusted according to the number of moving paths of the moving mechanism 25, for example, the moving mechanism 25 has a longitudinal moving path or a transverse moving path, and then the moving mechanism 25 may be a one-way wheel; also for example, if the moving mechanism 25 has both a longitudinal moving path and a lateral moving path, the moving mechanism 25 may be a universal wheel.
In the process of using the stretching machine 100, one end of the steel bar 200 may be anchored to the steel bar anchoring table 15, and the other end of the steel bar 200 is inserted into the steel bar anchoring mechanism 13 and connected to the pre-stretching mechanism 21 of the pre-stretching device 20, and each pre-stretching mechanism 21 pre-stretches the corresponding steel bar 200 from the steel bar anchoring mechanism 13 toward the pre-stretching mechanism 21, so that different steel bars 200 are stretched to the same or approximately the same stretching state; then, the reinforcing bar anchoring mechanism 13 is tensioned for the second time from the reinforcing bar anchoring mechanism 13 toward the first tensioning mechanism 11 by the first tensioning mechanism 11 and the second tensioning mechanism 12 of the integral tensioning device 10, and when the reinforcing bar anchoring mechanism 13 moves to the first limiting groove 1113 and the second limiting groove 1213, the first limiting member 115 is installed in the first limiting groove 1113 and the second limiting member 125 is installed in the second limiting groove 1213, respectively, so as to keep the reinforcing bar anchoring mechanism 13 at the current position.
Embodiments of the present invention also provide a preform production line including the stretch-draw machine 100 of any of the above embodiments. The preform production line may be used to produce pre-stressed laminated panels.
In the prefabricated member production line according to the embodiment of the invention, the tensioning machine 100 can pre-tension the steel bar 200 through the pre-tensioning equipment 20, and then secondarily tension the steel bar 200 through the integral tensioning equipment 10, because the integral tensioning equipment 10 and the pre-tensioning equipment 20 are connected to the same end part of the steel bar 200 in the longitudinal direction, the integral tensioning equipment 10 and the pre-tensioning equipment 20 tension the steel bar 200 in the same longitudinal direction, the positions of the integral tensioning equipment 10 and the pre-tensioning equipment 20 are reasonably arranged, the arrangement between the integral tensioning equipment 10 and the pre-tensioning equipment 20 is centralized, which is beneficial to reducing the overlarge space position occupied by the tensioning machine 100, and is beneficial to reducing the whole floor space of the tensioning machine 100. In addition, since one end portion of the reinforcing bar 200 is generally fixed to the reinforcing bar anchoring table 15 during the process of tensioning the reinforcing bar 200, so that the tensioning machine 100 can tension the reinforcing bar 200 by being connected to the other end portion of the reinforcing bar 200, the integral tensioning device 10 and the pre-tensioning device 20 according to the embodiment of the present invention are connected to the same end portion of the reinforcing bar 200 in the longitudinal direction, which facilitates the pre-tensioning device 20 and the integral tensioning device 10 to share the same reinforcing bar anchoring table 15 for pre-tensioning and integral tensioning, respectively, so that an additional reinforcing bar anchoring table 15 can be omitted.
In the present invention, the terms "mounted," "connected," "secured," and the like are to be construed broadly unless otherwise explicitly stated or limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through the inside of two elements, or they may be connected only through surface contact or through surface contact of an intermediate member. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first," "second," and the like are used merely for distinguishing between descriptions and not intended to imply or imply a particular structure. The description of the terms "some embodiments," "other embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the invention. In the present invention, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described herein can be combined and combined by those skilled in the art without contradiction.
The above embodiments are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (12)
1. The utility model provides a tensioning machine (100) for stretch-draw many reinforcing bars (200) that the lengthwise extends, its characterized in that, tensioning machine (100) includes whole tensioning equipment (10) and pretensioning equipment (20), whole tensioning equipment (10) with pretensioning equipment (20) are connected the same tip of lengthwise direction of reinforcing bar (200), whole tensioning equipment (10) with pretensioning equipment (20) in lengthwise upward syntropy stretch-draw reinforcing bar (200).
2. Tensioning machine (100) according to claim 1, characterized in that said unitary tensioning device (10) comprises a tensioning device (14) and a rebar anchoring mechanism (13) connected;
the end part penetrates through the longitudinal direction and is fixed on the steel bar anchoring mechanism (13), and the tensioning movement of the tensioning device (14) drives the steel bar anchoring mechanism (13) to synchronously move along the tensioning direction;
the pretensioning equipment (20) is located at the front end of the steel bar anchoring mechanism (13) in the moving direction, and the pretensioning equipment (20) is connected with the end penetrating out of the steel bar anchoring mechanism (13).
3. Tensioning machine (100) according to claim 2, characterized in that the tensioning device (14) comprises a first tensioning mechanism (11) and a second tensioning mechanism (12), the bar anchoring mechanism (13) being connected transversely between the first tensioning mechanism (11) and the second tensioning mechanism (12), the tensioning movements of the first tensioning mechanism (11) and the second tensioning mechanism (12) driving the bar anchoring mechanism (13) to move synchronously and in parallel along the tensioning direction; the pre-tensioning equipment (20) is located in a space surrounded by the first tensioning mechanism (11), the second tensioning mechanism (12) and the steel bar anchoring mechanism (13).
4. Stretching machine (100) according to claim 1, wherein said pre-stretching means (20) comprises a pre-stretching support (23) and a plurality of pre-stretching mechanisms (21), said plurality of pre-stretching mechanisms (21) being arranged in series transversely and being connected one by one to said plurality of end portions, each of said pre-stretching mechanisms (21) being mounted to said pre-stretching support (23) slidably along said longitudinal direction independently of each other, the sliding direction of said pre-stretching mechanisms (21) being parallel to the stretching direction of said stretching means (14).
5. Stretching machine (100) according to claim 4, wherein the pretensioning device (20) further comprises a moving mechanism (25), the moving mechanism (25) carrying the pretensioning support (23) and being adapted to bring the pretensioning support (23) into motion, the moving mechanism (25) having at least one of a longitudinal moving path along which the moving mechanism (25) moves in a sliding direction of the pretensioning mechanism (21) and a transverse moving path along which the moving mechanism (25) moves in an arrangement direction of the plurality of pretensioning mechanisms (21).
6. Stretching machine (100) according to claim 4, wherein said integral stretching device (10) has an abutment surface (135), said abutment surface (135) being arranged in succession to said pre-stretching means (21) along the stretching direction, said end portion passing through said abutment surface (135) along the stretching direction;
the pre-tensioning mechanism (21) comprises a pushing part (211) and a cylinder body (213), the pushing part (211) is slidably sleeved on the cylinder body (213) along the longitudinal direction, and the cylinder body (213) is fixedly connected with the end part;
the pushing portion (211) pushes the abutting surface (135) in the direction opposite to the stretching direction, the cylinder body (213) displaces in the stretching direction and drives the end portion to displace in the stretching direction so as to achieve pre-stretching.
7. Stretching machine (100) according to claim 3, wherein said rebar anchoring means (13) comprise a rebar anchoring insert (131) and a stretching mobile frame (133), said stretching mobile frame (133) being connected between said first stretching means (11) and said second stretching means (12), said rebar anchoring insert (131) being removably mounted to said stretching mobile frame (133).
8. Stretching machine (100) according to claim 7, wherein the rebar anchoring insert (131) comprises an insert body (1311) and a rebar anchorage (1313), the rebar anchorage (1313) being fixedly connected to the insert body (1311).
9. Stretching machine (100) according to claim 7, characterized in that said first stretching means (11) comprise a first support frame (111) and a first telescopic assembly (113), said first support frame (111) being provided with a first runner (1111), the length direction of said first runner (1111) being the same as the telescopic direction of said first telescopic assembly (113);
the second tensioning mechanism (12) comprises a second supporting frame (121) and a second telescopic assembly (123), the second supporting frame (121) is provided with a second sliding chute (1211), and the length direction of the second sliding chute (1211) is the same as the telescopic direction of the second telescopic assembly (123);
one end of the tensioning movable frame (133) is mounted in the first sliding groove (1111) and connected with the first telescopic assembly (113), and the other end of the tensioning movable frame (133) is mounted in the second sliding groove (1211) and connected with the second telescopic assembly (123).
10. Stretching machine (100) according to claim 9, wherein said first telescopic assembly (113) comprises a first cylinder (1131) and a first telescopic rod (1133), said first cylinder (1131) being connected to said first support frame (111), said first telescopic rod (1133) being connected to said stretching mobile frame (133), the telescopic movement of said first telescopic rod (1133) causing said stretching mobile frame (133) to move;
the second telescopic assembly (123) comprises a second barrel body (1231) and a second telescopic rod, the second barrel body (1231) is connected with the second supporting frame (121), the second telescopic rod is connected with the tensioning moving frame (133), and the telescopic motion of the second telescopic rod drives the tensioning moving frame (133) to move.
11. Tensioning machine (100) according to claim 10, characterized in that said first support (111) is further provided with a first limit slot (1113), said first limit slot (1113) communicating with said first sliding slot (1111), said first tensioning mechanism (11) further comprises a first limit member (115), said first limit member (115) being removably mounted to said first limit slot (1113), said first limit member (115) mounted to said first limit slot (1113) limiting the movement of said tensioning mobile frame (133);
the second supporting frame (121) is further provided with a second limiting groove (1213), the second limiting groove (1213) is communicated with the second sliding groove (1211), the second tensioning mechanism (12) further comprises a second limiting piece (125), the second limiting piece (125) is detachably mounted in the second limiting groove (1213), and the second limiting piece (125) mounted in the second limiting groove (1213) limits the movement of the tensioning moving frame (133).
12. Preform production line, characterized in that it comprises a stretch-draw machine (100) according to any one of claims 1 to 11.
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| KR20180020462A (en) * | 2016-08-18 | 2018-02-28 | 한국철도기술연구원 | Method and Apparatus for Manufacturing Pre-tensioned Concrete Member |
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