阅读说明：本技术 一种钢丝预成型测量棒及其应用方法 (Steel wire preforming measuring rod and application method thereof ) 是由 褚福金 刘霞 曹锐 田成 于 2019-11-07 设计创作，主要内容包括：本发明公开了一种钢丝预成型测量棒及其应用方法,属于高压钢丝缠绕胶管加工技术领域,包括若干不同直径的预成型棒和标准测量棒,预成型棒和标准测量棒上沿其长度方向均标示有长度刻度尺；应用中,根据相应钢丝增强层选择相同直径的标准测量棒和直径较大的预成型棒,再将钢丝绕制在预成型棒上,制成预成型钢丝,然后将预成型钢丝套装在标准测量棒上用拉伸装置进行拉伸,至钢丝完全贴附在标准测量棒表面上,通过长度刻度尺可直接得到拉伸后钢丝的螺距,判断其是否达标。本发明对钢丝的预成型和测量操作均较为简单；应用时采用的拉伸装置能够方便的对标准测量棒进行拆装,能够稳定的夹持预成型钢丝,拉伸操控简单,还能够及时停止拉伸预成型钢丝。(The invention discloses a steel wire preforming measuring rod and an application method thereof, belonging to the technical field of high-pressure steel wire winding rubber pipe processing, and comprising a plurality of preforming rods and standard measuring rods with different diameters, wherein length scales are marked on the preforming rods and the standard measuring rods along the length direction of the preforming rods and the standard measuring rods; in application, a standard measuring rod with the same diameter and a preformed rod with a larger diameter are selected according to a corresponding steel wire reinforcing layer, then a steel wire is wound on the preformed rod to form a preformed steel wire, the preformed steel wire is sleeved on the standard measuring rod and stretched by a stretching device until the steel wire is completely attached to the surface of the standard measuring rod, the pitch of the stretched steel wire can be directly obtained through a length scale, and whether the steel wire reaches the standard or not is judged. The steel wire preforming and measuring operation is simple; the stretching device that adopts when using can be convenient carry out the dismouting to the standard measurement stick, centre gripping preforming steel wire that can be stable, and tensile control is simple, can also in time stop tensile preforming steel wire.)

1. The utility model provides a steel wire preforming measuring rod, its characterized in that includes the preforming stick (100) of a plurality of different diameters and the standard measuring rod (200) of a plurality of different diameters, preforming stick (100) and standard measuring rod (200) all are cylinder straight bar shape, all mark a straight line (300) along its length direction on preforming stick (100) and standard measuring rod (200), mark length scale (400) on straight line (300).

2. A wire preform measuring stick according to claim 1, wherein the preform stick (100) is of iron and the gauge stick (200) is of nylon.

3. The method for applying the steel wire pre-forming measuring rod according to claim 2, wherein the steel wire pre-forming measuring rod is applied to a steel wire which is selected to be used for preparing a steel wire reinforcing layer, and the method comprises the following steps:

s1, selecting a standard measuring rod (200) with the same diameter according to the spiral diameter of the steel wire reinforced layer to be prepared, and selecting a preformed rod (100) with the diameter larger than that of the standard measuring rod (200);

s2, spirally winding the straight steel wire on the preformed rod (100) selected in the step S1, keeping the steel wire attached to the surface of the preformed rod (100), and enabling the pitch of the wound steel wire to be smaller than that of the steel wire reinforcing layer to obtain the preformed steel wire;

s3, sleeving the preformed steel wire obtained in the step S2 on the standard measuring rod (200) selected in the step S1, stretching the preformed steel wire along the length direction of the preformed steel wire until the steel wire is just attached to the surface of the standard measuring rod (200) to form a finished steel wire product, wherein the thread diameter of the finished steel wire product is equal to that of the steel wire reinforcing layer, measuring the thread pitch of the finished steel wire product through a length scale (400) on the standard measuring rod (200), and selecting the preformed steel wire obtained in the step S2 as a material steel wire if the obtained thread pitch is equal to that of the steel wire reinforcing layer; if the obtained screw pitch is larger than the screw pitch of the steel wire reinforcing layer, the screw diameter of the preformed steel wire in the step S2 is too large, and a preformed rod (100) with a smaller diameter is required to be selected to perform a steel wire with a smaller screw diameter again; if the pitch of the preformed wire is smaller than the pitch of the wire reinforcement layer, the diameter of the preformed wire in step S2 is too small, and a preformed rod (100) with a larger diameter is selected to perform a preformed wire with a larger diameter again until the pitch of the resulting wire-like product is equal to the pitch of the wire reinforcement layer, and the preformed wire before drawing can be used as the material wire for preparing the wire reinforcement layer.

4. In the step S3, the preformed steel wire is drawn in the longitudinal direction thereof by using a special drawing device, which has the following specific structure:

the device comprises two support frame plates (1) which are oppositely arranged in the horizontal direction, and a stretching mechanism, a clamping mechanism, a measuring rod mounting mechanism and an infrared stop mechanism which are arranged between the two support frame plates (1), wherein the stretching mechanism comprises a guide rod (2) and a screw rod (3) which are horizontally arranged, and two sliding blocks (4) which are respectively sleeved on two sides of the screw rod (3), the guide rod (2) is fixedly connected between the upper ends of the two support frame plates (1), one end of the screw rod (3) is connected with a forward and reverse rotating motor (5) which is arranged on the support frame plate (1) on one side, the other end of the screw rod (3) is connected onto the support frame plate (1) on the other side through a bearing (6), the middle part of the screw rod (3) is used as a boundary, threads with opposite turning directions are respectively distributed on the surfaces on two sides of the screw rod, and the insides of the two sliding blocks (4) are respectively, the opposite sides of the two sliding blocks (4) are respectively provided with a lantern ring (7) which is sleeved on the screw rod (3) in a clearance mode, one side, facing the sliding blocks (4), of each lantern ring (7) is provided with an annular clamping groove (8) with the opening diameter reduced, one side, facing the lantern ring (7), of each sliding block (4) is fixedly provided with an annular body (9) which is inserted into the annular clamping groove (8), the length of each annular body (9) is not smaller than the depth of each annular clamping groove (8), and the annular bodies (9) are located at the openings of the annular clamping grooves (8) in an initial state; the top parts of the lantern ring (7) and the sliding block (4) are respectively fixedly provided with a guide sleeve (46) sleeved on the guide rod (2), the lantern ring (7) and the sliding block (4) are respectively connected with a connecting rod (10) in a longitudinal sliding mode, and a first locking screw (11) is arranged at the sliding position;

the clamping mechanism comprises two arc-shaped clamping jaws (12) which are oppositely arranged in the front-back direction, a driving assembly for driving the two clamping jaws (12) to open and close and a bracket for mounting the driving assembly, wherein the number of the clamping mechanisms is four, and the four clamping mechanisms are fixedly connected to the lower ends of four connecting rods (10) through the bracket respectively;

the measuring rod mounting mechanism comprises two fixed short rods (13) which are opposite to each other and respectively fixed on the opposite surfaces of the two support frame plates (1), two sleeves (14) respectively sleeved on the two fixed short rods (13) in a sliding manner, springs (15) connected to the inner sides of the sleeves (14) and the fixed short rods (13), two abutting plates (16) respectively fixed on the opposite surfaces of the two sleeves (14), a clamping component connected to one sleeve (14) and a limiting component longitudinally connected to the abutting plate (16) on the other side in a sliding manner, the fixed short rod (13) and the sleeve (14) are both horizontally arranged, a group of concentric circles taking the center of the resisting plate as the center are marked on the opposite surfaces of the two resisting plates (16), when the spring (15) is in a natural state, the distance between the two resisting plates (16) is smaller than the length of the standard measuring rod (200); the clamping assembly comprises two horizontally arranged fixed rods (17) respectively arranged above and below the sleeve (14), two slide ways (18) respectively longitudinally fixed at the top and the bottom of the sleeve (14), two square clamping blocks (19) used for clamping the standard measuring rod (200) at two sides in the vertical direction, and an L-shaped swing rod (20) hinged among the slide ways (18), the fixed rods (17) and the clamping blocks (19), the middle part of the L-shaped swing rod (20) is hinged on the fixed rod (17), the two ends of the L-shaped swing rod (20) are respectively hinged on the slideway (18) and the clamping blocks (19), the back surfaces of the two clamping blocks (19) are respectively fixed with a vertically arranged movable adjusting plate (21), the movable adjusting plate (21) is provided with a through hole through which the fixing rod (17) at the corresponding side passes and can move longitudinally relative to the fixing rod; the limiting assembly comprises two longitudinally-arranged sliding channel openings (22) arranged on the upper side and the lower side of the resisting plate (16), two limiting rods (23) respectively connected in the two sliding channel openings (22) in a sliding mode, and a connecting rod (24) connected between the two limiting rods (23), the connecting rod (24) is connected with the corresponding resisting plate (16) in a sliding mode, and a second locking screw (25) is arranged at the sliding position;

the infrared stop mechanism comprises an infrared transmitter (26) and an infrared receiver (27) which are respectively fixed on the opposite surfaces of a clamping block (19) and a limiting rod (23) which are positioned below, and a controller (28) which is installed on one side of the bottom of one supporting frame plate (1), wherein the infrared transmitter (26), the infrared receiver (27) and a forward and reverse rotation motor (5) are electrically connected with the controller (28).

5. The method for applying the steel wire pre-forming measuring rod according to the claim 3, wherein the drawing device adopted in the step S2 is characterized in that a first shaft sleeve (29) for the connecting rod (10) to longitudinally pass through is fixed on the sliding block (4) and the lantern ring (7), and the first locking screw (11) is arranged on one side of the first shaft sleeve (29) in a penetrating way; one side of the abutting plate (16) of the connecting and limiting assembly, which is back to the other abutting plate (16), is fixedly provided with a second shaft sleeve (30) for the connecting rod (24) to move up and down, and the second locking screw (25) penetrates through one side of the second shaft sleeve (30).

6. The method of claim 3, wherein the drawing device used in step S2 includes a first gear (31) and a second gear (32) which are aligned in a front-rear direction and engaged with each other, a third gear (33) which is engaged with one side of the second gear (32) and is not in contact with the first gear (31), two linear shafts (34) which are respectively fixed to centers of the first gear (31) and the second gear (32), a driving shaft (35) which is fixed to a center of the third gear (33), and a locking assembly which is provided at one end side of the driving shaft (35), the bracket includes two clamping plates (36) which are respectively located at both end sides of the linear shafts (34) and a fixing plate (37) which is connected between upper ends of the two clamping plates (36), the fixing plate (37) is fixedly connected to a lower end of the connecting rod (10), and the two clamping jaws (12) are respectively fixed to the two linear shafts (34), the opposite surfaces of the two clamping plates (36) are respectively provided with a mounting groove (38) for inserting and rotating the end part of the straight moving shaft (34), one end of the driving shaft (35) is rotatably connected to the clamping plate (36) at one side through the mounting groove (38), and the other end of the driving shaft (35) penetrates through the clamping plate (36) at the other side and extends outwards; the locking assembly comprises a sliding groove which is arranged on a driving shaft (35) on the outer side and is parallel to the axial direction of the driving shaft, a sliding sleeve (39) which is connected in the sliding groove in a sliding mode and a limiting groove (40) which is arranged on the plane of a clamping plate (36) on the side where the sliding sleeve (39) is located, an outer gear ring I (41) which surrounds the periphery of the driving shaft (35) is formed on the surface of the sliding groove, an inner gear ring I (42) which is meshed with the outer side of the outer gear ring I (41) is formed on the inner ring surface of the sliding sleeve (39), an outer gear ring II (43) which surrounds the periphery of the sliding sleeve (39) is formed on the outer ring surface of the sliding sleeve (39), an inner gear ring II (44) which is meshed with the outer side of the outer gear ring II (43) is formed on the side wall of the limiting groove (40), one end, facing the.

Technical Field

The invention relates to the technical field of high-pressure steel wire wound rubber pipe processing, in particular to a steel wire preforming measuring rod and an application method thereof.

Background

The structure of the high-pressure steel wire wound rubber pipe mainly comprises an inner rubber layer, a middle rubber layer, four or more layers of alternately wound steel wire reinforcing layers and an outer rubber layer, wherein the inner rubber layer has the function of enabling a conveying medium to bear pressure and protecting steel wires from being corroded, the outer rubber layer protects the steel wires from being damaged, and the steel wire reinforcing layers (phi 0.3-2.0) are framework materials and play a role in reinforcement. The steel wire reinforcing layer is positioned between the inner rubber layer and the outer rubber layer in a spiral wrapping mode, a material steel wire which is spiral and has proper thread diameter and thread pitch needs to be selected for stretching and coating in the production process, if the selected material steel wire is not right, the prepared steel wire reinforcing layer is difficult to ensure that the thread diameter and the thread pitch reach the standard at the same time, when the steel wire reinforcing layer is produced, the thread diameter and the thread pitch of the material steel wire which is suitable for selection can be determined only through multiple experiments and multiple measurements, and in the prior art, the parameter control of the preforming operation of the steel wire is complex; in addition, during each measurement, the thread diameter and the thread pitch of the steel wire are separately performed, so that the operation is complicated and the application is inconvenient; in addition, there is no apparatus for drawing a spiral wire in the prior art.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to solve the technical problem of providing a steel wire preforming measuring rod and an application method thereof, wherein the preforming and measuring operations of a steel wire are simple and the application is convenient; the stretching device that adopts when using can be convenient carry out the dismouting to the standard measurement stick, centre gripping preforming steel wire that can be stable, and tensile control is simple, can also in time stop tensile preforming steel wire.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

a steel wire preforming measuring rod comprises a plurality of preforming rods with different diameters and a plurality of standard measuring rods with different diameters, wherein the preforming rods and the standard measuring rods are cylindrical straight rods, a straight line is marked on each of the preforming rods and the standard measuring rods along the length direction of the preforming rods and the standard measuring rods, and a length scale is marked on each straight line;

furthermore, the preformed rod is made of iron, and the standard measuring rod is made of nylon. The nylon has strong performances such as wear resistance and the like, and the preformed rod and the standard measuring rod made of the nylon have good structural stability and can be prevented from being scraped and abraded by steel wires.

The invention also provides a method for applying the steel wire preforming measuring rod to the selection of the steel wire for preparing the steel wire reinforcing layer, which comprises the following steps:

s1, selecting a standard measuring rod 200 with the same diameter according to the spiral diameter of the steel wire reinforcing layer to be prepared, and selecting a preformed rod with the diameter larger than that of the standard measuring rod;

s2, spirally winding the straight steel wire on the preformed rod selected in the step S1, keeping the steel wire attached to the surface of the preformed rod, and enabling the pitch of the wound steel wire to be smaller than that of the steel wire reinforcing layer to obtain the preformed steel wire;

s3, sleeving the preformed steel wire obtained in the step S2 on the standard measuring rod selected in the step S1, stretching the preformed steel wire along the length direction of the preformed steel wire until the steel wire is just attached to the surface of the standard measuring rod to form a finished steel wire product, wherein the thread diameter of the finished steel wire product is equal to that of the steel wire reinforcing layer, the thread pitch of the finished steel wire product is measured by a length scale on the standard measuring rod, and if the obtained thread pitch is equal to that of the steel wire reinforcing layer, the preformed steel wire obtained in the step S2 can be selected as a material steel wire; if the obtained thread pitch is larger than that of the steel wire reinforcing layer, the thread diameter of the preformed steel wire in the step S2 is too large, and a preformed rod with a smaller diameter needs to be selected to perform a steel wire with a smaller thread diameter again; if the pitch of the preformed wire is smaller than the pitch of the wire reinforcement layer, the diameter of the preformed wire in step S2 is too small, and a preformed rod with a larger diameter needs to be selected to perform a preformed wire with a larger diameter again until the pitch of the resulting wire product is equal to the pitch of the wire reinforcement layer, and the preformed wire before drawing can be used as the material wire for preparing the wire reinforcement layer.

In the step S3, the preformed steel wire is drawn in the longitudinal direction thereof by using a special drawing device, which has the following specific structure:

the device comprises two support frame plates which are oppositely arranged in the horizontal direction, and a stretching mechanism, a clamping mechanism, a measuring rod mounting mechanism and an infrared stop mechanism which are arranged between the two support frame plates, wherein the stretching mechanism comprises a guide rod and a screw rod which are horizontally arranged, and two sliding blocks which are respectively sleeved on two sides of the screw rod, the guide rod is fixedly connected between the upper ends of the two support frame plates, one end of the screw rod is connected with a forward and reverse rotating motor which is arranged on the support frame plate on one side, the other end of the screw rod is connected onto the support frame plate on the other side through a bearing, threads with opposite rotation directions are respectively distributed on the surfaces of two sides of the screw rod by taking the middle part as a boundary, the insides of the two sliding blocks are respectively matched with the threads on the corresponding sides, lantern rings which are sleeved on the screw rod in a clearance manner are arranged on the opposite sides of the two sliding blocks, and, an annular body inserted in the annular clamping groove is fixed on one side surface of the sliding block facing the side lantern ring, the length of the annular body is not smaller than the depth of the annular clamping groove, and the annular body is located at an opening of the annular clamping groove in an initial state; the top parts of the lantern ring and the sliding block are respectively fixedly provided with a guide sleeve sleeved on the guide rod, the lantern ring and the sliding block are respectively connected with a connecting rod in a longitudinal sliding mode, and a first locking screw is arranged at the sliding position;

the clamping mechanism comprises two arc-shaped clamping jaws which are oppositely arranged in the front-back direction, a driving assembly for driving the two clamping jaws to open and close and a bracket for mounting the driving assembly, and the four clamping mechanisms are fixedly connected to the lower ends of the four connecting rods through the brackets respectively;

the measuring rod mounting mechanism comprises two fixed short rods, two sleeves, springs, two abutting plates, a clamping assembly and a limiting assembly, wherein the two fixed short rods are opposite to each other and are respectively fixed on opposite surfaces of two supporting frame plates, the two sleeves are respectively sleeved on the two fixed short rods in a sliding mode, the springs are connected to the inner sides of the sleeves and the fixed short rods, the two abutting plates are respectively fixed on opposite surfaces of the two sleeves, the clamping assembly is connected to one sleeve, the limiting assembly is longitudinally connected to the other abutting plate in a sliding mode, the fixed short rods and the sleeves are horizontally arranged, a group of concentric circles with the centers of the abutting plates as the circle center are marked on opposite surfaces of the two abutting plates, and when the springs are in a natural state, the distance between the two abutting plates is; the clamping assembly comprises two horizontally arranged fixed rods, two slide ways, two square clamping blocks and an L-shaped swing rod, wherein the two horizontally arranged fixed rods are respectively arranged above and below the sleeve, the two slide ways are respectively and longitudinally fixed at the top and the bottom of the sleeve, the two square clamping blocks are used for clamping the standard measuring rod on two sides in the vertical direction, the L-shaped swing rod is hinged between the slide ways, the fixed rods and the clamping blocks, the middle part of the L-shaped swing rod is hinged to the fixed rods, two ends of the L-shaped swing rod are respectively hinged to the slide ways and the clamping blocks, vertically arranged movable adjusting plates are respectively fixed on the back surfaces of the two clamping blocks, and through holes for the fixed rods on the corresponding sides to; the limiting assembly comprises two longitudinally arranged slideway ports arranged on the upper side and the lower side of the resisting plate, two limiting rods respectively connected in the two slideway ports in a sliding manner, and a connecting rod connected between the two limiting rods, the connecting rod is connected with the corresponding resisting plate in a sliding manner, and a locking screw II is arranged at the sliding position;

the infrared stop mechanism comprises an infrared transmitter and an infrared receiver which are respectively fixed on the opposite surfaces of the clamping block and the limiting rod which are positioned below, and a controller which is installed on one side of the bottom of one supporting frame plate, wherein the infrared transmitter, the infrared receiver and the forward and reverse rotating motor are all electrically connected with the controller.

Furthermore, a first shaft sleeve for the connecting rod to longitudinally penetrate through is fixed on each of the sliding block and the lantern ring, and the first locking screw penetrates through one side of the first shaft sleeve; one side of the supporting plate back to the other supporting plate of the connecting limiting assembly is fixedly provided with a second shaft sleeve for the connecting rod to move up and down, and the second locking screw penetrates through one side of the second shaft sleeve. The sliding connection of the sliding block, the lantern ring and the connecting rod and the sliding connection of the abutting plate and the connecting rod are simply realized through the arrangement.

Further, the driving assembly comprises a first gear and a second gear which are aligned in the front-rear direction and are meshed with each other, a third gear which is meshed with one side of the second gear and is not contacted with the first gear, two straight moving shafts which are respectively fixed at the centers of the first gear and the second gear, a driving shaft which is arranged at the center of the third gear, and a locking assembly which is arranged at one end side of the driving shaft, the bracket comprises two clamping plates respectively positioned at two end sides of the direct-acting shaft and a fixed plate connected between the upper ends of the two clamping plates, the fixing plate is fixedly connected with the lower end of the connecting rod, the two clamping jaws are respectively fixed on the two straight moving shafts, the opposite surfaces of the two clamping plates are respectively provided with a mounting groove for the end part of the straight moving shaft to insert and rotate, one end of the driving shaft is rotatably connected to the clamping plate on one side through the mounting groove, and the other end of the driving shaft penetrates through the clamping plate on the other side and extends outwards; the locking assembly comprises a sliding groove, a sliding sleeve and a limiting groove, the sliding groove is arranged on a driving shaft on the outer side and is parallel to the axial direction of the driving shaft, the sliding sleeve is connected in the sliding groove in a sliding mode, the limiting groove is formed in the plane of a clamping plate on the side of the sliding sleeve, an outer gear ring I surrounding the driving shaft is formed on the surface of the sliding groove, an inner gear ring I meshed with the outer side of the outer gear ring I is formed on the inner ring surface of the sliding sleeve, an outer gear ring II surrounding the periphery of the sliding sleeve is formed on the outer ring surface of the sliding sleeve, an inner gear ring II meshed with the outer side of the outer gear ring II is formed on the side wall of the limiting groove, one. The driving shaft can directly drive the gear III to rotate by rotating the driving shaft, because the gear II is meshed with the gear III, and the gear I is meshed with the gear II, the gear I and the gear II can be driven to rotate in opposite directions, so that the two direct-acting shafts rotate in opposite directions, clamping and opening of the two clamping jaws can be driven, when the clamping jaws move in place, the sliding sleeve slides to be inserted into the limiting groove, the sliding sleeve can be prevented from rotating autonomously by the meshing effect between the outer gear ring II and the inner gear ring II, the driving shaft can be prevented from rotating autonomously by the meshing effect between the outer gear ring I and the inner gear ring I, namely, the driving shaft is positioned, and the clamping jaws can be ensured to be in a stable state.

3. Advantageous effects

(1) The invention comprises a plurality of preformed rods with different diameters and a plurality of standard measuring rods with different diameters, wherein straight lines are marked on the preformed rods and the standard measuring rods along the length direction of the preformed rods and the standard measuring rods, so that the measuring lines are conveniently kept on the same straight line, a length scale is marked on the straight line, the intersection points of the steel wire and the straight line can be visually shown, the distance between every two adjacent intersection points in the length direction is the screw pitch of the steel wire, and the measuring accuracy is higher. When the method is applied to selecting a material steel wire for preparing a steel wire reinforcing layer, a standard measuring rod with the same diameter and a preformed rod with the diameter larger than that of the standard measuring rod are selected according to the spiral diameter of the steel wire reinforcing layer, the preformed steel wire with the larger spiral diameter and the smaller spiral pitch can be conveniently prepared by using the preformed rod, the specific operation is that the steel wire is always attached to the surface of the preformed rod to be spirally wound, and the spiral pitch of the preformed steel wire is determined by a length scale on the preformed rod during winding; then, sleeving the preformed steel wire on a standard measuring rod and stretching the preformed steel wire until the steel wire is just attached to the surface of the standard measuring rod, wherein the thread diameter of the stretched steel wire is equal to that of the steel wire reinforcing layer, the thread pitch of the stretched steel wire can be directly read through a length scale on the standard measuring rod, and whether the corresponding preformed steel wire can be used as a material steel wire or not can be determined by comparing the thread pitch with that of the steel wire reinforcing layer; if the pitch of the thread pitch is smaller than that of the steel wire reinforcing layer, the thread diameter of the corresponding preformed steel wire is too small, a preformed rod with a larger diameter needs to be selected to perform a steel wire with a larger thread diameter again, until the pitch of the stretched steel wire is equal to that of the steel wire reinforcing layer, and the preformed steel wire before stretching can be used as a material steel wire for preparing the steel wire reinforcing layer.

(2) The stretching device adopted when stretching the preformed steel wire is used for installing the standard measuring rod through the measuring rod installation mechanism, during installation, the standard measuring rod is only needed to push the abutting plate on the side where the limiting component is located to compress the side spring, then the hand is loosened, under the reset action of the spring, the other end of the standard measuring rod can push the abutting plate on the side where the clamping component is located to enable the side sleeve to move towards the side fixed short rod, meanwhile, the two clamping blocks can be driven to move oppositely through the L-shaped swing rod to clamp the corresponding end part of the standard measuring rod, then the connecting rod is moved to enable the top of the limiting rod located below to be in contact with the bottom of the standard measuring rod, the locking screw II is screwed, the opposite end of the clamping end of the standard measuring rod can be supported, and the installation of the standard measuring rod is completed; during the dismantlement, only need to measure the stick with the standard and remove to spacing subassembly place side, under the reset action of spring, the sleeve of clamping component place side and support the board and can remove to spacing subassembly place side, drive the grip block dorsad removal through L shape pendulum rod, loosen the centre gripping to the stick is measured to the standard promptly, alright convenient taking off standard measures the stick. The stretching device is convenient to mount and dismount the standard measuring rod.

(3) The stretching device adopted when stretching the preformed steel wire clamps two ends of the preformed steel wire through the two sets of clamping mechanisms, and drives the two sets of clamping mechanisms to move back and forth through the stretching mechanism, so that the preformed steel wire is stretched; the stretching mechanism comprises a screw rod, two sliding blocks and a stretching mechanism, wherein screw threads with opposite rotation directions are distributed on two sides of the screw rod, the two sliding blocks are respectively matched and sleeved on two sides of the screw rod, lantern rings sleeved on the screw rod in a clearance mode are arranged on opposite sides of the two sliding blocks, an annular clamping groove with a reduced opening diameter is formed in each lantern ring, an annular body inserted into the annular clamping groove is fixed on each sliding block, and in an initial state, the annular body is located at the opening of the annular clamping groove; when the clamping mechanism is used, the preformed steel wire is clamped by the clamping jaws, then the wire lever is driven to rotate, the two sliding blocks move back to back, the annular body is inserted into the annular clamping groove, the two clamping mechanisms positioned on the same side are tightly pressed together, the stable clamping of the end part of the preformed steel wire is realized, the clamping effect is good, the standard measuring rod cannot be abraded, and the measurement accuracy of the standard measuring rod can be prevented from being influenced by abrasion; then the removal of slider promotes the lantern ring and removes together, and the slider back of the body of both sides removes back of the body and drives the both ends of preforming steel wire and move back of the body mutually, realizes the drawing to preforming steel wire.

(4) The stretching device adopted when stretching the preformed steel wire is provided with the infrared stop mechanism, the infrared stop mechanism comprises an infrared emitter and an infrared receiver which are respectively fixed on the opposite surfaces of the clamping block and the limiting rod which are positioned below, and a controller which is arranged on one side of the bottom of one supporting frame plate. In application, the installation of the standard measuring rod is realized, and meanwhile, the infrared transmitter and the infrared receiver are just almost attached to the bottom of the standard measuring rod, so that preparation is made for the timely stop operation of stretching action; open infra-red transmitter and infrared receiver in the pivoted of drive wire lever, because the spiral diameter of preforming steel wire is greater than the diameter of standard measurement stick before tensile, then the infrared ray can directly extend to infrared receiver from infra-red transmitter, stretch to just attached when measuring stick on the surface in the standard when preforming steel wire, infrared propagation can be blocked to the steel wire, then infrared receiver can not receive the infrared ray smoothly, it produces triggering signal and gives the controller, the controller stops drive wire lever and rotates, stop promptly to stretch preforming steel wire, can avoid preforming steel wire by tensile excessive.

In conclusion, the preforming and measuring operations of the measuring rod on the steel wire are simple, the adopted stretching device can conveniently disassemble and assemble the standard measuring rod during application, and preparation is made for the timely stopping operation of stretching actions when the standard measuring rod is installed; the preformed steel wire can be stably clamped, and the standard measuring rod can be prevented from being abraded; the stretching control is simple, the stretching of the preformed steel wire can be stopped in time, and the preformed steel wire can be prevented from being stretched excessively.

Drawings

FIG. 1 is a schematic view of a preformed measuring stick configuration;

FIG. 2 is a schematic structural view of a stretching apparatus;

FIG. 3 is an enlarged view of the structure of the area A in FIG. 2;

fig. 4 is a schematic view of the internal connection between the slider 4 and the collar 7;

FIG. 5 is a right side view of the stop assembly of FIG. 2;

FIG. 6 is a side view of the clamping mechanism;

fig. 7 is a front view of the clamping mechanism.

Reference numerals: 1. a support frame plate; 2. a guide bar; 3. a wire lever; 4. a slider; 5. a positive and negative rotation motor; 6. a bearing; 7. a collar; 8. an annular neck; 9. an annular body; 10. a connecting rod; 11. locking the first screw; 12. a clamping jaw; 13. fixing the short rod; 14. a sleeve; 15. a spring; 16. a resisting plate; 17. fixing the rod; 18. a slideway; 19. a clamping block; 20. an L-shaped swing link; 21. moving the adjusting plate; 22. a gate port; 23. a limiting rod; 24. a connecting rod; 25. a second locking screw; 26. an infrared emitter; 27. an infrared receiver; 28. a controller; 29. a first shaft sleeve; 30. a second shaft sleeve; 31. a first gear; 32. a second gear; 33. a third gear; 34. a linear moving shaft; 35. a drive shaft; 36. a splint; 37. a fixing plate; 38. mounting grooves; 39. a sliding sleeve; 40. a limiting groove; 41. a first outer gear ring; 42. a first inner gear ring; 43. a second outer gear ring; 44. a second inner gear ring; 45. a handle bar; 46. a guide sleeve; 100. pre-forming a rod; 200. a standard measuring bar; 300. a straight line; 400. a length scale.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.