CN222481808U - Chain bending measuring instrument for opening window - Google Patents

Abstract

The utility model discloses a window opening chain curvature measuring instrument, comprising a machine platform, a pushing and clamping mold and a side bending guide mechanism, a placement cavity is arranged in the middle position of the machine platform, a mounting plate is fixedly connected to the top of the machine platform, a center hole which passes through the placement cavity is opened at the center of the mounting plate, the pushing and clamping mold is provided with two groups which are respectively arranged on both sides of the top of the mounting plate, two groups of linear slide rails are symmetrically fixedly connected to both sides of the top of the mounting plate, the pushing and clamping mold is slidably installed on the two groups of linear slide rails on the same side, and the two groups of the pushing and clamping molds are used to clamp and fix the window opening chain body to be measured. The utility model can accurately measure the key dimensional curvature value of the window opening chain, the measurement data is intuitive, the operation is simple, the technical requirements for the operator are reduced, the back bending dimension measurement and the side bending dimension measurement can be realized on a set of equipment, and the measurement efficiency is improved.

Description

Chain bending measuring instrument for opening window

Technical Field

The utility model relates to the technical field of windowing chain testing, in particular to a windowing chain bending measuring instrument.

Background

The window opening chain is a mechanical device, and the main function of the window opening chain is to realize the opening and closing of the window in a manual or electric mode, and the device plays a key transmission role in the opening and closing process of the window. The chain bending degree measurement of windowing usually involves evaluating whether the chain is twisted or deformed in the use process, so as to avoid affecting the opening and closing of a window, the window movement is not smooth and even is blocked due to the twisting or deformation of the chain, and the chain of windowing can be ensured to be in a good working state through the bending degree measurement, thereby ensuring the normal function of the window and improving the use convenience.

The prior window chain bending measurement method comprises the following two modes, namely a manual measurement method, wherein a straight ruler or a thinner steel wire is utilized to draw the head part and the tail part of the chain into the same straight line, the chain is ensured to be straightened, a wooden rod or a thin iron rod is used for respectively applying a bit of pressure on the outer side of the chain, the window chain bending is observed and measured, a certain manpower and experience are required for the dynamic measurement method to ensure that proper pressure is applied, and the other automatic measurement method comprises a laser scanning method, a lower cam method, a mechanical arm method and the like, and is accurate and quick, but the equipment cost is higher, the back bending dimension and the side bending dimension of the window chain are important measurement standards of the window chain, and the two methods are mainly only suitable for back bending measurement of the window chain, and the equipment is required to be replaced during the side bending measurement of the window chain, so that the operation is troublesome, and the measurement efficiency is reduced, and therefore, the window chain bending measurement instrument is required to be designed to improve the problems.

Disclosure of utility model

The application aims to provide a window chain bending measuring instrument, which aims to solve the problems that equipment is required to be replaced, the operation is troublesome and the measuring efficiency is reduced when the back bending size and the side bending size of a window chain are measured in the prior art, wherein the technical requirements on operators are high.

In order to achieve the above purpose, the application provides the following technical scheme that the chain bending measuring instrument for windowing comprises:

The device comprises a machine table, wherein a placing cavity is arranged in the middle of the machine table, the top of the machine table is fixedly connected with a mounting plate, and a central hole communicated with the placing cavity is formed in the center of the mounting plate;

The pushing clamping die is provided with two groups of pushing clamping dies which are respectively arranged at two sides of the top of the mounting plate, two groups of linear sliding rails are symmetrically and fixedly connected to the two sides of the top of the mounting plate, the pushing clamping dies are slidably arranged on the two groups of linear sliding rails at the same side, and the two groups of pushing clamping dies are used for clamping and fixing a windowing chain body to be measured;

The side bending guide mechanism is provided with two groups of front and rear ends which are respectively arranged at the middle position of the mounting plate, and a through hole which is communicated with the placing cavity is formed in the position, corresponding to the side bending guide mechanism, on the mounting plate;

the window chain body is fixedly connected with a steel wire rope at the middle point of the window chain body during measurement, one end of the steel wire rope can penetrate through the central hole and extend to the placing cavity to be connected with weights, and the weights are used for measuring the back bending size of the window chain body;

One end of the steel wire rope can be arranged on the lateral bending guide mechanism, penetrates through the through hole and extends to the placing cavity to be connected with weights, and is used for lateral bending of the two-side windowing chain body.

Preferably, the pushing clamping die comprises a mounting seat, a sliding seat is fixedly connected to the bottom of the mounting seat corresponding to the linear sliding rail, the sliding seat is slidably connected to the linear sliding rail, a fixed clamping block and a stress guiding sliding block are mounted at the top of the mounting seat, a compression sliding plate is slidably mounted inside the stress guiding sliding block, two ends of the compression sliding plate extend to the outside of the stress guiding sliding block, a movable clamping block is mounted at one end, close to the fixed clamping block, of the compression sliding plate, a pushing piece is connected to the other end of the compression sliding plate and used for driving the compression sliding plate and the movable clamping block to transversely move, and the end part of the windowing chain body is clamped between the fixed clamping block and the movable clamping block.

Preferably, the pushing piece comprises a spring guide seat connected to one end of the compression sliding plate, which is far away from the movable clamping block, an adjusting screw is fixedly connected to one end of the spring guide seat, which is far away from the compression sliding plate, a transverse compression elbow clamp is fixedly connected to one end of the adjusting screw, which is far away from the spring guide seat, and the transverse compression elbow clamp is fixedly installed on the installation seat.

Preferably, the installation cavity is formed in the spring guide seat, the guide rod is movably installed in the installation cavity, one end of the guide rod is fixedly connected to the compression sliding plate, the other end of the guide rod is arranged in the installation cavity and fixedly connected with a limiting block, and a spring is sleeved between the limiting block and the outer wall of the compression sliding plate and located outside the guide rod.

Preferably, the fixing clamp splice is inside transversely cross-connected with the locating pin, locating pin and fixing clamp splice demountable installation, fixing clamp splice and mount pad demountable installation, movable clamp splice and compress tightly slide demountable installation.

Preferably, a fixing plate is fixedly connected to one side of the mounting seat, and a slide rail locking device is mounted on the fixing plate and located at the linear slide rail.

Preferably, buffer pieces are arranged on two sides between the two groups of linear sliding rails on the same side, and the buffer pieces are used for limiting the moving range of pushing the clamping die.

Preferably, the buffer piece comprises a buffer fixing seat fixedly connected to the top of the mounting plate and a buffer fixedly connected to the buffer fixing seat, and the stress end of the buffer faces the pushing clamping die and extends out of the buffer fixing seat.

Preferably, the lateral bending guiding mechanism comprises a slide bar fixing seat fixedly connected to the top of the mounting plate, two slide bars are vertically fixedly connected to the top of the slide bar fixing seat, guide wheel adjusting seats are sleeved on the slide bars in a sliding mode, butterfly bolts are connected to the positions, located on the slide bars, of the guide wheel adjusting seats, guide wheel fixing seats are fixedly connected to the top of the guide wheel adjusting seats, guide wheels are rotatably connected to the inside of the guide wheel fixing seats, the guide wheels vertically correspond to the positions of the through holes, and avoidance grooves corresponding to the through holes are formed in the slide bar fixing seats.

Preferably, the horizontal scale is all installed to the embedding of the left and right sides that just is located the centre bore at mounting panel top, the vertical scale is installed to the front and back both ends that just is located the centre bore at mounting panel top, vertical scale sets up with horizontal scale is perpendicular.

In summary, the utility model has the technical effects and advantages that:

1. According to the utility model, two ends of the windowing chain body are respectively arranged on two groups of pushing clamping dies and used for fixing the windowing chain body to be measured, then the clamping dies are pushed to move on the linear sliding rail, the position of the windowing chain body is adjusted, the middle point of the windowing chain body is arranged at the center hole, the steel wire rope is fixed at the middle point of the windowing chain body, one end of the steel wire rope penetrates through the center hole and is connected with weights with corresponding mass, the windowing chain body can be pulled through the freely-drooping state of the weights, the height ruler is used for measuring the back bending dimension of the windowing chain body, one end of the steel wire rope respectively bypasses the two groups of side bending guide mechanisms and then penetrates through the through hole to be connected with weights with corresponding mass, the right angle ruler is used for measuring the side bending dimension, the key dimension bending value of the windowing chain can be accurately measured, the measuring data are visual, the operation is simple and convenient, the technical requirements on operators are reduced, the back bending dimension measurement and the side bending dimension measurement can be realized on one set of equipment, and the measuring efficiency is improved.

2. According to the utility model, the positioning pin is detachably arranged with the fixed clamping block, the fixed clamping block is detachably arranged with the mounting seat, the movable clamping block is detachably arranged with the compaction sliding plate, so that the positioning pin, the fixed clamping block and the movable clamping block can be conveniently replaced, the length of the adjusting screw can be adjusted, the movable range of the movable clamping block is adjusted, the clamping width between the movable clamping block and the fixed clamping block is adjusted, the windowing chain products with multiple specifications can be adaptively measured, and the practicability is higher.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic overall perspective view of a window chain camber measuring device;

FIG. 2 is a schematic view of a part of a perspective structure of a window chain bending measuring instrument;

FIG. 3 is a schematic diagram of a pushing and clamping mold in a three-dimensional structure;

FIG. 4 is a cross-sectional view of a push grip mold;

FIG. 5 is an enlarged schematic view of the structure of the area A in FIG. 2;

FIG. 6 is a schematic perspective view of a lateral bending guide mechanism;

fig. 7 is a schematic view of the structure of the back curve and side curve of the windowing chain body.

The device comprises a machine table 1, a placing cavity 101, a moving wheel 2, a mounting plate 301, a center hole 302, a transverse scale 303, a vertical scale 4, a pushing frame 5, a linear slide rail 6, a pushing clamping die 601, a mounting seat 602, a fixed clamping block 603, a locating pin 604, a stress guiding slide block 605, a pressing slide plate 606, a movable clamping block 607, a spring guide seat 6071, a guide rod 6072, a spring 608, an adjusting screw 609, a transverse pressure type toggle clamp 610, a fixing plate 611, a slide rail locking device 612, a slide seat 7, a windowing chain body 8, a lateral bending guiding mechanism 801, a slide bar fixing seat 802, a slide bar 803, a guide wheel adjusting seat 804, a butterfly bolt 805, a guide wheel fixing seat 806, a guide wheel 9, a buffer part 901, a buffer fixing seat 902, a buffer 10 and a weight.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1-7, the embodiment of the utility model provides a window chain bending measuring instrument, which comprises a machine table 1, a pushing and clamping die 6 and a lateral bending guide mechanism 8, wherein a placing cavity 101 is arranged in the middle of the machine table 1, the top of the machine table 1 is fixedly connected with a mounting plate 3, and the center of the mounting plate 3 is provided with a center hole 301 communicated with the placing cavity 101; the pushing clamping die 6 is provided with two groups of linear slide rails 5 which are respectively arranged at two sides of the top of the mounting plate 3, two groups of linear slide rails 5 are symmetrically and fixedly connected to the two sides of the top of the mounting plate 3, the pushing clamping die 6 is slidably arranged on the two groups of linear slide rails 5 at the same side, and the two groups of pushing clamping die 6 are used for clamping and fixing a windowing chain body 7 to be measured; the side bending guide mechanism 8 is provided with two groups of through holes which are respectively arranged at the front end and the rear end of the middle position of the mounting plate 3, the position of the mounting plate 3 corresponding to the side bending guide mechanism 8 is provided with a through hole which is communicated with the placing cavity 101, the middle point of the windowing chain body 7 is fixedly connected with a steel wire rope when the windowing chain body 7 is measured, one end of the steel wire rope can pass through the central hole 301 and extend to the placing cavity 101 to be connected with weights 10 for measuring the back bending dimension of the windowing chain body 7, one end of the steel wire rope can be arranged on the side bending guide mechanism 8 and then pass through the through hole and extend to the placing cavity 101 to be connected with weights 10 for measuring the side bending dimension of the two sides windowing chain body 7, when the bending degree of the windowing chain body 7 is measured, the two ends of the windowing chain body 7 are respectively arranged on the two groups of pushing clamping dies 6 for fixing the windowing chain body 7 to be measured, then the position of the windowing chain body 7 is adjusted by pushing the clamping dies 6 to move on the linear sliding rail 5, the middle point of the windowing chain body 7 is arranged at the central hole 301, one end of the steel wire rope penetrates through the center hole 301 and then is connected with the weight 10 with corresponding mass, the windowing chain body 7 can be pulled through the freely drooping state of the weight 10, the back bending size (A in fig. 7) of the windowing chain body 7 is measured by using a height ruler, one end of the steel wire rope respectively bypasses two groups of lateral bending guide mechanisms 8 and then penetrates through the through hole to be connected with the weight 10 with corresponding mass, the lateral bending size (B in fig. 7) is measured by using a square, the critical size bending value of the windowing chain can be accurately measured, the measured data is visual, the operation is simple and convenient, and the technical requirements on operators are reduced.

In this embodiment, as shown in fig. 2, the top of the mounting plate 3 is located at the left side and the right side of the central hole 301, the transverse scales 302 are embedded and installed, the vertical scales 303 are embedded and installed at the front end and the rear end of the mounting plate 3 and located at the central hole 301, the vertical scales 303 are perpendicular to the transverse scales 302, the length midpoint of the windowing chain body 7 is conveniently moved and adjusted to the corresponding position of the central hole 301 when the clamping die 6 is pushed to adjust the position, the measurement is conveniently performed, the right angle scales lean against the two sides of the windowing chain body 7 when the lateral bending dimension is measured through the vertical scales 303, and the lateral bending dimension of the windowing chain is directly observed through the readings of the corresponding vertical scales 303 at the bottom of the right angle scales.

As an implementation manner of this embodiment, as shown in fig. 3, the pushing and clamping mold 6 includes a mounting seat 601, a sliding seat 612 is fixedly connected to the bottom of the mounting seat 601 corresponding to the position of the linear sliding rail 5, the sliding seat 612 is slidably connected to the linear sliding rail 5, a fixed clamping block 602 and a force-bearing guide sliding block 604 are installed at the top of the mounting seat 601, the force-bearing guide sliding block 604 is fixedly connected to the mounting seat 601 through a bolt, a compression sliding plate 605 is slidably installed inside the force-bearing guide sliding block 604, two ends of the compression sliding plate 605 extend to the outside of the force-bearing guide sliding block 604, a movable clamping block 606 is installed at one end of the compression sliding plate 605, which is close to the fixed clamping block 602, a pushing piece is connected to the other end of the compression sliding plate 605, the pushing piece is used for driving the compression sliding plate 605 and the movable clamping block 606 to move transversely, and when the windowing chain body 7 is clamped between the fixed clamping block 602 and the movable clamping block 606, the end of the windowing chain 7 is placed between the movable clamping block 606 and the fixed clamping block 602, and the movable clamping block 606 is driven to move towards the direction of the fixed clamping block 602 by the pushing piece, so that the end of the windowing chain 7 is clamped and fixed, and has a simple structure and convenient use.

In this embodiment, as shown in fig. 3, the fixing clamp splice 602 is internally and transversely connected with a positioning pin 603 in a penetrating manner, and the positioning pin 603 is used for penetrating through the sleeve inner hole of the windowing chain body 7 to prevent the windowing chain body 7 from clamping and fixing dislocation, so that the consistency of the windowing chain body 7 in each clamping and fixing can be ensured, and the measurement accuracy is improved.

In this embodiment, as shown in fig. 3, the pushing member includes a spring guide 607 connected to one end of the compression slide 605 away from the movable clamping block 606, an adjusting screw 608 is fixedly connected to one end of the spring guide 607 away from the compression slide 605, a transverse elbow clamp 609 is fixedly connected to one end of the adjusting screw 608 away from the spring guide 607, the transverse elbow clamp 609 is fixedly mounted on the mounting seat 601, the adjusting screw 608 can be driven to move transversely by pressing the transverse elbow clamp 609, the adjusting screw 608 pushes the spring guide 607 to move, the spring guide 607 pushes the compression slide 605 to move in the stressed guide slide 604, so that the compression slide 605 drives the movable clamping block 606 to move for clamping and fixing, and the stability of moving adjustment of the compression slide 605 is improved by sliding the compression slide 605 in the stressed guide slide 604, so that the clamping effect of the movable clamping block 606 on the windowing chain body 7 is improved.

In this embodiment, as shown in fig. 3 and fig. 4, an installation cavity is formed inside the spring guide 607, a guide rod 6071 is movably installed in the installation cavity, one end of the guide rod 6071 is fixedly connected to the compression slide plate 605, the other end of the guide rod 6071 is fixedly connected with a limiting block in the installation cavity, a spring 6072 is sleeved outside the guide rod 6071 between the limiting block and the outer wall of the compression slide plate 605, and through the arrangement of the guide rod 6071 and the spring 6072, a certain displacement buffer can be provided for the movable clamping block 606, so that the excessive clamping force of the movable clamping block 606 is avoided, and the damage caused by clamping of the windowing chain body 7 is avoided.

In this embodiment, as shown in fig. 3 and 4, the positioning pin 603 and the fixed clamping block 602 may be detachably mounted, and the detachable mounting manner may be a bolt connection, a threaded connection, etc., the fixed clamping block 602 and the mounting seat 601 may be detachably mounted, and the movable clamping block 606 and the compression sliding plate 605 may be detachably mounted, and the detachable mounting manner may be a bolt connection, a mortise and tenon joint, etc., so that the positioning pin 603, the fixed clamping block 602 and the movable clamping block 606 may be replaced, where the adjusting screw 608 may perform length adjustment, so as to adjust the movable range of the movable clamping block 606, that is, adjust the clamping width between the movable clamping block 606 and the fixed clamping block 602, and be capable of adapting to measure the windowing chain products with different sizes, so that the practicality is higher.

In this embodiment, as shown in fig. 3, a fixing plate 610 is fixedly connected to one side of the mounting seat 601, a slide rail locking device 611 is installed on the fixing plate 610 at the position of the linear slide rail 5, the slide rail locking device 611 can be used for locking on the linear slide rail 5, the mounting seat 601 is fixed in position, when the lateral bending dimension of the windowing chain body 7 is measured, two groups of pushing clamping dies 6 are locked in position, the windowing chain body 7 is prevented from moving to influence the measurement precision when the lateral bending dimension is measured, in one example, the slide rail locking device 611 comprises a connecting frame fixedly connected to the fixing plate 610, a bidirectional screw rod rotatably connected to the connecting frame, a knob fixedly connected to one end of the bidirectional screw rod and clamping blocks in threaded connection to two opposite sides of the bidirectional screw rod, and the bidirectional screw rod is driven to rotate by rotating the knob, so that the two clamping blocks are adjusted to be close to or far away from each other, and clamped on the linear slide rail 5 by the clamping blocks, and the position of the mounting seat 601 is locked.

In this embodiment, as shown in fig. 2, two sides between two sets of linear slide rails 5 on the same side are respectively provided with a buffer member 9, the buffer members 9 are used for limiting the movement range of pushing the clamping mold 6, each buffer member 9 comprises a buffer fixing seat 901 fixedly connected to the top of the mounting plate 3 and a buffer 902 fixedly connected to the buffer fixing seat 901, the stress end of each buffer 902 faces the pushing clamping mold 6 and extends out of the buffer fixing seat 901, and the buffer members 9 are used for limiting the movement range of pushing the clamping mold 6, so as to avoid the pushing clamping mold 6 from being separated from the linear slide rails 5.

As an implementation manner of this embodiment, as shown in fig. 6, the lateral bending guiding mechanism 8 includes a slide bar fixing seat 801 fixedly connected to the top of the mounting plate 3, two slide bars 802 are vertically and fixedly connected to the top of the slide bar fixing seat 801, a guide wheel adjusting seat 803 is slidably sleeved on the two slide bars 802, a butterfly bolt 804 is connected to the guide wheel adjusting seat 803 at the position of the slide bar 802, a guide wheel fixing seat 805 is fixedly connected to the top of the guide wheel adjusting seat 803, a guide wheel 806 is rotatably connected to the inside of the guide wheel fixing seat 805, the guide wheel 806 corresponds to the via hole up and down, a avoidance groove corresponding to the via hole is formed in the slide bar fixing seat 801, when the lateral bending dimension of the windowing chain body 7 is measured, the guide wheel adjusting seat 803 is longitudinally moved on the slide bar 802, the guide wheel 806 is moved to the position of the connection point of the windowing chain body 7 and the steel wire rope, the butterfly bolt 804 is screwed to fix the position of the guide wheel adjusting seat 803, then the steel wire rope bypasses the guide wheel 806 and then passes through the via hole to connect weight 10, and the lateral bending of the windowing chain body 7 is measured, and care needs to be kept as level as possible.

In the embodiment, the four corners of the bottom of the machine table 1 are provided with the movable wheels 2, and the two sides of the top of the mounting plate 3 are highly connected with pushing frames 4, so that the window chain bending measuring instrument can be conveniently moved to a use area.

Working principle: when in use, one end of the windowing chain body 7 is arranged between one group of movable clamping blocks 606 and fixed clamping blocks 602 which push the clamping die 6, the positioning pin 603 penetrates through the sleeve inner hole of the windowing chain body 7, the adjusting screw 608 can be driven to transversely move by pressing the transverse elbow clamp 609, the adjusting screw 608 pushes the spring guide seat 607 to move, the spring guide seat 607 pushes the compression sliding plate 605 to move in the stressed guide sliding block 604, thereby driving the movable clamping blocks 606 to move to clamp and fix the end part of the windowing chain body 7 by the compression sliding plate 605, then the other end of the windowing chain body 7 is arranged between the other group of movable clamping blocks 606 and fixed clamping blocks 602 which push the clamping die 6, the other end of the windowing chain body 7 is clamped and fixed by the method, then the clamping die 6 is pushed to move on the linear sliding rail 5 to match with the indication of the transverse scale 302, the middle point of the length of the windowing chain body 7 is moved and adjusted to the corresponding position of the central hole 301, a height gauge is adopted to measure the distance between the highest point of the windowing chain body 7 and the mounting plate 3 in a natural state, then a steel wire rope is fixed at the middle point of the windowing chain body 7, one end of the steel wire rope penetrates through the central hole 301 and is connected with a weight 10 with corresponding mass, the windowing chain body 7 is pulled to be bent back through the free sagging state of the weight 10, the height gauge is adopted to measure the back bending size of the windowing chain body 7, after the back bending size is measured, the weight 10 is taken down, a guide wheel adjusting seat 803 is longitudinally moved on a sliding rod 802, a guide wheel 806 is moved to the position of the connecting point of the windowing chain body 7 and the steel wire rope, a butterfly bolt 804 is screwed to fix the position of the guide wheel adjusting seat 803, then the steel wire rope is wound around the guide wheel 806 and penetrates through a through hole to be connected with the weight 10, the side bending of the windowing chain body 7 is pulled, then the right angle ruler is leaned against the side edge of the windowing chain body 7, and the side bending size of the windowing chain is directly observed through the reading of the position, corresponding to the vertical scale 303, of the bottom of the right angle ruler.

It should be noted that, although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, and improvements to some of the technical features described in the foregoing embodiments may be made by those skilled in the art, and all modifications, equivalents, improvements and modifications are intended to be included in the scope of the present utility model.

Claims (10)

1. The chain bending measuring apparatu of windowing, its characterized in that includes:

The device comprises a machine table (1), wherein a placing cavity (101) is formed in the middle of the machine table (1), a mounting plate (3) is fixedly connected to the top of the machine table (1), and a central hole (301) communicated with the placing cavity (101) is formed in the center of the mounting plate (3);

the pushing clamping die (6) is provided with two groups of pushing clamping dies (6) which are respectively arranged at two sides of the top of the mounting plate (3), two groups of linear sliding rails (5) are symmetrically and fixedly connected to the two sides of the top of the mounting plate (3), the pushing clamping dies (6) are slidably arranged on the two groups of linear sliding rails (5) at the same side, and the two groups of pushing clamping dies (6) are used for clamping and fixing a windowing chain body (7) to be measured;

The lateral bending guide mechanism (8), the lateral bending guide mechanism (8) is provided with two groups of front and rear ends which are respectively arranged at the middle position of the mounting plate (3), and the mounting plate (3) is provided with a through hole which is communicated with the placing cavity (101) at the position corresponding to the lateral bending guide mechanism (8);

The window chain body (7) is fixedly connected with a steel wire rope at the middle point of the window chain body during measurement, one end of the steel wire rope can penetrate through the central hole (301) and extend into the placing cavity (101) to be connected with weights (10) for measuring the back bending size of the window chain body (7);

One end of the steel wire rope can be arranged on the lateral bending guide mechanism (8) and then penetrates through the through hole and extends into the placing cavity (101) to be connected with weights (10) for lateral bending sizes of the two-side windowing chain bodies (7).

2. The bending measuring instrument for the windowing chain according to claim 1, wherein the pushing clamping die (6) comprises a mounting seat (601), a sliding seat (612) is fixedly connected to the bottom of the mounting seat (601) corresponding to the linear sliding rail (5), the sliding seat (612) is slidably connected to the linear sliding rail (5), a fixed clamping block (602) and a stress guiding sliding block (604) are mounted on the top of the mounting seat (601), a pressing sliding plate (605) is slidably mounted inside the stress guiding sliding block (604), two ends of the pressing sliding plate (605) extend to the outside of the stress guiding sliding block (604), a movable clamping block (606) is mounted at one end, close to the fixed clamping block (602), of the pressing sliding plate (605), a pushing piece is connected to the other end of the pressing sliding plate (605) and used for driving the pressing sliding plate (605) to move transversely, and the end of the windowing chain body (7) is arranged between the fixed clamping block (602) and the movable clamping block (606).

3. The chain bending measuring instrument according to claim 2, wherein the pushing member comprises a spring guide (607) connected to one end of the compression slide (605) away from the movable clamping block (606), one end of the spring guide (607) away from the compression slide (605) is fixedly connected with an adjusting screw (608), one end of the adjusting screw (608) away from the spring guide (607) is fixedly connected with a transverse elbow clamp (609), and the transverse elbow clamp (609) is fixedly installed on the installation seat (601).

4. The chain bending measuring instrument for windowing according to claim 3, wherein an installation cavity is formed in the spring guide seat (607), a guide rod (6071) is movably installed in the installation cavity, one end of the guide rod (6071) is fixedly connected to the compression sliding plate (605), a limiting block is fixedly connected to the other end of the guide rod (6071) in the installation cavity, and a spring (6072) is sleeved between the limiting block and the outer wall of the compression sliding plate (605) and located outside the guide rod (6071).

5. The chain bending measuring instrument for windowing according to claim 2, wherein a positioning pin (603) is transversely connected inside the fixed clamping block (602) in a penetrating manner, the positioning pin (603) is detachably mounted with the fixed clamping block (602), the fixed clamping block (602) is detachably mounted with the mounting seat (601), and the movable clamping block (606) is detachably mounted with the compression sliding plate (605).

6. The chain bending measuring instrument for opening windows according to claim 2, wherein a fixing plate (610) is fixedly connected to one side of the mounting seat (601), and a slide rail locking device (611) is mounted on the fixing plate (610) and located at the position of the linear slide rail (5).

7. The chain bending measuring instrument for windowing according to claim 1, wherein buffer pieces (9) are arranged on two sides between two groups of linear sliding rails (5) on the same side, and the buffer pieces (9) are used for limiting the moving range of pushing the clamping die (6).

8. The chain bending measuring instrument according to claim 7, wherein the buffer member (9) comprises a buffer fixing seat (901) fixedly connected to the top of the mounting plate (3) and a buffer (902) fixedly connected to the buffer fixing seat (901), and a stress end of the buffer (902) faces the pushing clamping die (6) and extends out of the buffer fixing seat (901).

9. The window chain bending measuring instrument according to claim 1, wherein the lateral bending guiding mechanism (8) comprises a slide bar fixing seat (801) fixedly connected to the top of the mounting plate (3), two slide bars (802) are vertically and fixedly connected to the top of the slide bar fixing seat (801), guide wheel adjusting seats (803) are sleeved on the two slide bars (802) in a sliding manner, butterfly bolts (804) are connected to positions, located at the slide bars (802), of the guide wheel adjusting seats (803), guide wheel fixing seats (805) are fixedly connected to the tops of the guide wheel adjusting seats, guide wheels (806) are rotatably connected to the inside of the guide wheel fixing seat (805), the guide wheels (806) vertically correspond to the through holes, and avoidance grooves corresponding to the through holes are formed in the slide bar fixing seat (801).

10. The chain bending measuring instrument for windowing according to claim 1, wherein the transverse scales (302) are embedded and installed on the top of the mounting plate (3) and on the left side and the right side of the central hole (301), the vertical scales (303) are embedded and installed on the top of the mounting plate (3) and on the front end and the rear end of the central hole (301), and the vertical scales (303) are perpendicular to the transverse scales (302).