A speed bump laying device
By designing an automated drilling and bolt conveying device, the problem of low efficiency in manual installation of speed bumps was solved, enabling fast and labor-saving speed bump laying.
Patent Information
- Application Number
- CN202311155568.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-07
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2043-09-07
AI Technical Summary
The installation of existing speed bumps mainly relies on manual operation, resulting in a significant waste of manpower and time.
Design a speed bump laying device that includes a drilling device and a bolt conveying device, and achieve automated installation by moving the vehicle body in conjunction with drilling and bolt conveying.
It enables rapid drilling and installation of speed bumps, saving manpower and time and improving installation efficiency.
Smart Images

Figure CN117166389B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of traffic speed reduction belt, in particular to a speed reduction belt laying device. BACKGROUND
[0002] Speed reduction belt is also called speed reduction ridge, which is a traffic facility installed on the highway to reduce the speed of passing vehicles. The shape is generally strip-shaped, and also a little bit, the material is mainly rubber, and also metal, generally yellow and black alternately to attract visual attention, slightly arch the road surface to achieve the purpose of vehicle speed reduction, generally set at highway intersections, industrial and mining enterprises, schools, residential area entrances and other road sections that require vehicle speed reduction and slow down and are prone to traffic accidents. It is a new type of traffic safety setting for reducing the speed of motor vehicles and non-motor vehicles. Speed reduction belt greatly reduces the occurrence of accidents at various traffic intersections, so there are many speed reduction belts on the roads of many colleges and universities, which greatly ensures the safety of pedestrians. At present, the installation of road speed reduction belt is manually laid on the road surface and then manually punched and installed, which not only wastes manpower, but also greatly wastes time. SUMMARY
[0003] In view of the problems in the prior art, the purpose of the present application is to provide a speed reduction belt laying device to solve the above problems.
[0004] The technical scheme of the present application is as follows: a speed reduction belt laying device, comprising a vehicle body and a universal drive wheel rotatably connected to the lower end of the vehicle body, further comprising:
[0005] A punching device is fixedly installed on the inner side of the vehicle body for hole opening and bolt implantation into the hole;
[0006] A bolt conveying device is fixedly installed on the inner side of the vehicle body above the punching device for conveying bolts to the punching device.
[0007] Further, the vehicle body is in the shape of a "door", and the vehicle body comprises:
[0008] A lead screw A is rotatably connected to the upper side of the vehicle body;
[0009] A moving plate is threadedly connected to the lead screw A;
[0010] A drive motor B is fixedly installed on one side of the moving plate, and a lead screw B is fixedly installed on the output shaft of the drive motor B;
[0011] The driving motor A is fixedly installed on one side of the vehicle body, the output end of the driving motor A is fixedly connected with the screw rod A through the vehicle body, the screw rod B is parallel to the height direction of the moving plate, one side of the punching device is slidably connected to the rear side of the moving plate, and the punching device is fixedly installed with a threaded connection block matched with the screw rod B.
[0012] Further, the bolt conveying device comprises:
[0013] The chute is arranged on the upper end of the feeding plate and is adjacent to the rear wall of the feeding plate.
[0014] The taking mechanism is located at the left end of the feeding plate.
[0015] The feeding plate is inclined, and the chute is adjacent to the rear wall of the feeding plate.
[0016] Further, the taking mechanism comprises:
[0017] The fixed plate A is fixedly installed on the left lower edge of the feeding plate.
[0018] The taking plate A comprises a vertical part slidably connected to the left wall of the feeding plate and a horizontal part integrally formed on the left lower edge of the vertical part.
[0019] The spring is fixedly connected between the fixed plate A and the horizontal part.
[0020] The taking drag plate is located on the upper end surface of the horizontal part, and the upper end of the taking drag plate is provided with a recess part arranged along the length direction thereof.
[0021] The taking plate B is vertically arranged on the upper end of the feeding plate, and the connecting plate A is fixedly installed between the front and rear sides of the taking plate B and the taking plate A.
[0022] The electric push rod A is hinged to one side of the upper end edge of the fixed plate A, wherein the end of the taking drag plate away from the electric push rod A is hinged to the upper end edge of the fixed plate A, the end of the taking drag plate away from the taking plate A is fixedly installed with a vertical plate, and the output end of the electric push rod A is hinged to the outer edge of the upper end of the vertical plate.
[0023] Further, the recess part is fixedly installed with a positioning plate on the side away from the chute, and the positioning plate is embedded with a permanent magnet A.
[0024] Further, the punching device comprises:
[0025] The fixed plate B is located below the fixed plate A and is vertically arranged, and the threaded connecting block is fixedly installed on the front side of the fixed plate B;
[0026] The switching shaft is located on the rear side of the fixed plate B;
[0027] The fixed shaft seat is fixedly installed on the rear side of the fixed plate B, and the two ends of the switching shaft are rotatably connected to the fixed shaft seat;
[0028] The fixed block is fixedly installed on the rear side of the fixed plate B and adjacent to the fixed shaft seat;
[0029] The sliding plate is slidably connected to one side of the fixed block away from the fixed plate B;
[0030] The electric push rod B has a fixed end slidably connected to the rear side of the fixed plate B and adjacent to the fixed block, and the length direction of the electric push rod B is parallel to the height direction of the fixed plate B;
[0031] The support plate is located below the switching shaft, and a connecting seat is fixedly installed between the upper end of the support plate and the switching shaft, and the connecting seat is provided with at least two groups;
[0032] The driving motor C is fixedly installed on the upper end of the support plate;
[0033] The fixed end of the electric push rod B is fixedly connected with the connecting plate B between one side wall of the sliding plate, one end of the switching shaft extends to the rear side of the sliding plate through the fixed shaft seat and is fixedly connected with a gear, the rear side of the sliding plate is integrally formed with a plurality of gear teeth matched with the gear, the output shaft of the driving motor C extends downward through the lower end of the support plate and is fixedly connected with a hexagonal screw rod, and a permanent magnet B is embedded in the end of the hexagonal screw rod. The magnetic force of the permanent magnet B on the screw rod is greater than the magnetic force of the permanent magnet A on the screw rod.
[0034] Further, the punching device further comprises: a horizontal plate fixedly installed on the front side of the fixed plate B; and a driving motor D fixedly installed on the upper end of the horizontal plate, wherein the output end of the driving motor D extends downward through the lower end of the horizontal plate and is fixedly installed with a drill bit; and wherein the lower end of the horizontal plate is further embedded with a distance sensor.
[0035] Further, the width of the gap between the material taking plate A and the material taking plate B is equal to the outer diameter of the head of a single bolt, the distance between the material taking plate B and the feeding plate is equal to the outer diameter of the head of a single bolt when the spring is in the extended state, and the horizontal height of the upper end of the material taking plate A is equal to the horizontal height of the upper edge line on the left side of the feeding plate.
[0036] The beneficial effects of the present application are that the bolt conveying device cooperates with the punching device, and then the vehicle body cooperates with movement, so that the speed reduction belt laid on the ground can be quickly punched and installed, time and labor are saved, and the use effect is good. Attached Figure Description
[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0038] Figure 1 is a schematic diagram of the speed bump laying device according to a specific embodiment of the present invention. Figure One ;
[0039] Figure 2 shows the structure of the speed bump laying device according to a specific embodiment of the present invention. Figure One Enlarged view of part A in the middle;
[0040] Figure 3 is a schematic diagram of the speed bump laying device according to a specific embodiment of the present invention. Figure Two ;
[0041] Figure 4 shows the structure of the speed bump laying device according to a specific embodiment of the present invention. Figure Two Enlarged view of part B in the middle. Detailed Implementation
[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0043] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0044] Example 1:
[0045] As shown in Figures 1 to 4, this invention discloses a speed bump laying device, including a vehicle body 1 and a universal drive wheel 2 rotatably connected to the lower end of the vehicle body 1, and further including:
[0046] A drilling device is fixedly installed inside the vehicle body 1 for drilling holes and inserting bolts into the holes;
[0047] A bolt conveying device is fixedly installed inside the vehicle body 1 and located above the drilling device for conveying bolts to the drilling device.
[0048] By adopting the above technical solution, using a bolt conveying device in conjunction with a drilling device, and then moving the vehicle body, it is possible to quickly drill and install speed bumps laid on the ground, saving time and effort, and achieving good results.
[0049] Example 2:
[0050] This embodiment provides a speed bump laying device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0051] The present invention is further configured such that: the vehicle body 1 is in the shape of a "door" and the vehicle body 1 includes: a lead screw A, which is rotatably connected to the upper part of the vehicle body 1;
[0052] The movable plate is connected to the lead screw A by a thread;
[0053] Drive motor B101 is fixedly installed on one side of the movable plate, and lead screw B is fixedly installed on the output shaft of drive motor B101;
[0054] Among them, a drive motor A is fixedly installed on one side of the vehicle body 1. The output end of the drive motor A passes through the vehicle body and is fixedly connected to the lead screw A. The lead screw B is parallel to the height direction of the moving plate. One side of the drilling device is slidably connected to the rear side of the moving plate. A threaded connecting block 102 that matches the lead screw B is fixedly installed on the drilling device. A support frame is fixedly installed on the moving plate and the bolt conveying device.
[0055] By adopting the above technical solution, the relative position of the drilling device and the speed bump can be quickly adjusted by setting lead screw A, and then lead screw B can be used to push the drilling device for feeding, drilling and bolt installation, resulting in good performance.
[0056] Example 3:
[0057] This embodiment provides a speed bump laying device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.
[0058] The present invention is further configured such that: the bolt conveying device includes:
[0059] A feeding plate 3 is fixedly installed on one side of the vehicle body 1 and used for carrying the bolts;
[0060] A sliding groove 4 is formed on one side of the upper end of the feeding plate 3 along the length direction of the feeding plate 3;
[0061] A taking mechanism is located at the left end of the feeding plate 3;
[0062] Among them, the feeding plate 3 is arranged in an inclined manner, and the sliding groove 4 is adjacent to the rear side wall of the feeding plate 3.
[0063] By adopting the above technical scheme, the arc-shaped part of the head of the bolt after being laid down can be clamped into the sliding groove, and the bolts can be arranged in a neat and horizontal manner along the length direction of the feeding plate. In combination with the inclined feeding plate and the taking mechanism, the fast feeding to the punching device is realized, and the use effect is good.
[0064] Embodiment 4:
[0065] The embodiment provides a speed bump laying device, in addition to the technical scheme of the above-mentioned embodiment, further has the following technical features,
[0066] The taking mechanism further comprises:
[0067] A fixed plate A5 is fixedly installed on the left lower edge of the feeding plate 3;
[0068] A taking plate A6 comprises a vertical part slidingly connected to the left side wall of the feeding plate 3 and a horizontal part integrally formed on the left lower edge of the vertical part;
[0069] A spring is fixedly connected between the fixed plate A5 and the horizontal part;
[0070] A taking drag plate 8 is located on the upper end surface of the horizontal part, and a recessed part is formed on the upper end of the taking drag plate 8 along the length direction of the taking drag plate 8;
[0071] A taking plate B9 is vertically arranged on the upper end of the feeding plate 3, and a connecting plate A is fixedly installed between the front and rear sides of the taking plate B9 and the taking plate A6. A gap is arranged between the taking plate B9 and the taking plate A6 for a single bolt to enter;
[0072] An electric push rod A10 is hingedly connected to one side of the upper edge of the fixed plate A5;
[0073] The one end of the material taking drag plate 8 away from the electric push rod A10 is hinged to the upper end edge of the fixed plate A5, the one end of the material taking drag plate 8 away from the material taking plate A6 is fixedly installed with a vertical plate, and the output end of the electric push rod A10 is hinged to the upper end outer edge of the vertical plate.
[0074] By adopting the technical scheme, the transversely placed bolt can be switched to the vertical state through the setting of the material taking mechanism, so that the punching device can be conveniently taken, the material taking drag plate is driven by the electric push rod A to switch between the horizontal state and the vertical state, when the material taking drag plate is switched from the vertical state to the horizontal state, the material taking drag plate is pressed to the horizontal part to make the material taking plate A and the material taking plate B move downward, when the upper end horizontal height of the material taking drag plate and the material taking plate A is lower than the chute groove bottom, the bolt between the material taking plate A and the material taking plate B rolls downward into the recess of the material taking drag plate, when the material taking drag plate is switched to the vertical state, the material taking plate A is reset through the spring, and the next bolt enters the gap between the material taking plate A and the material taking plate B through the material taking plate B.
[0075] Embodiment 5:
[0076] The embodiment provides a speed bump laying device, in addition to comprising the technical scheme of the above embodiment, further has the following technical features,
[0077] The recess is further provided with a positioning plate 103 fixedly installed away from one side of the chute 4, and a permanent magnet A is embedded in the positioning plate 103.
[0078] By adopting the technical scheme, the bolt falling into the recess can be adsorbed and fixed through the setting of the permanent magnet A, so that the bolt does not loosen and fall off before contacting the punching device after being switched to the vertical state, and the use effect is good.
[0079] Embodiment 6:
[0080] The embodiment provides a speed bump laying device, in addition to comprising the technical scheme of the above embodiment, further has the following technical features,
[0081] The punching device comprises:
[0082] A fixed plate B11 is located below the fixed plate A5 and is vertically arranged, and a threaded connecting block 102 is fixedly installed on the front side of the fixed plate B11.
[0083] A switching shaft 12 is located on the rear side of the fixed plate B11.
[0084] The fixed shaft seat 13 is fixedly installed on the rear side of the fixed plate B11, and the two ends of the switching shaft 12 are rotatably connected to the fixed shaft seat 13.
[0085] The fixed block 14 is fixedly installed on the rear side of the fixed plate B11 and adjacent to the fixed shaft seat 13.
[0086] The sliding plate 15 is slidably connected to one side of the fixed block 14 away from the fixed plate B11.
[0087] The electric push rod B16 has a fixed end slidably connected to the rear side of the fixed plate B11 and adjacent to the fixed block 14, and the length direction of the electric push rod B16 is parallel to the height direction of the fixed plate B11.
[0088] The support plate 17 is located below the switching shaft 12, and a connecting seat is fixedly installed between the upper end of the support plate 17 and the switching shaft 12, and the connecting seat is provided with at least two groups.
[0089] The driving motor C18 is fixedly installed on the upper end of the support plate 17.
[0090] The fixed end of the electric push rod B16 is fixedly connected with the side wall of the sliding plate 15 through a connecting plate B, one end of the switching shaft 12 extends to the rear side of the sliding plate 15 through the fixed shaft seat 13 and is fixedly connected with a gear 19, the rear side of the sliding plate 15 is integrally formed with a plurality of teeth matched with the gear 19, the output shaft of the driving motor C18 extends downward through the lower end of the support plate 17 and is fixedly connected with a hexagonal screw rod, and a permanent magnet B is embedded at the end of the hexagonal screw rod. The magnetic force of the permanent magnet B on the screw rod is greater than the magnetic force of the permanent magnet A on the screw rod.
[0091] By adopting the above technical scheme, when the bolt needs to be taken out, the electric push rod B can be started, and when the electric push rod B is extended, the fixed end of the electric push rod B moves downward to drive the sliding plate to move downward synchronously. Since the sliding plate is provided with teeth matched with the gear, the switching shaft is driven to rotate clockwise, thereby driving the hexagonal screw rod at the lower end of the support plate to rotate upward and align with the head of the bolt. After the hole punching device is lifted to be inserted into the head of the bolt through the rotation of the screw rod B, the screw rod B and the electric push rod B are reset in sequence, and the bolt is aligned with the hole on the deceleration belt through the adjustment of the vehicle driving wheel. Then, the screw rod B is rotated to insert the bolt into the hole, and then the driving motor C is started to tighten. After completion, the electric push rod B is started to make the hexagonal screw rod fold upward, which does not affect the subsequent drilling operation, and the use effect is good.
[0092] Example 7:
[0093] The embodiment provides a deceleration strip laying device, in addition to comprising the technical scheme of the above embodiment, further has the following technical features,
[0094] The punching device further comprises:
[0095] The horizontal plate 20 is fixedly installed on the front side of the fixed plate B11.
[0096] The driving motor D21 is fixedly installed on the upper end of the horizontal plate 20, the output end of the driving motor D21 extends downward through the lower end surface of the horizontal plate 20 and is fixedly installed with a drill bit.
[0097] The lower end of the horizontal plate 20 is further embedded with a distance sensor.
[0098] Through the above technical scheme, the driving motor D is used for driving the drill bit to perform a punching operation, and the distance sensor can be used for realizing accurate positioning of the drill bit, so that the use effect is good.
[0099] Embodiment 8:
[0100] The embodiment provides a deceleration strip laying device, in addition to comprising the technical scheme of the above embodiment, further has the following technical features,
[0101] The application further provides that the gap between the material taking plate A6 and the material taking plate B9 has a width equal to the outer diameter of the head of a single bolt, the gap between the material taking plate B9 and the feeding plate 3 has a width equal to the outer diameter of the head of a single bolt when the spring is in the extended state, and the horizontal height of the upper end of the material taking plate A6 is equal to the horizontal height of the left upper edge line of the feeding plate 3. Through the above technical scheme, the bolt conveying device can convey only one bolt at a time, so that the bolts are prevented from sliding out, and the use effect is good.
[0102] In addition, the technologies not mentioned in the specification belong to the prior art and will not be discussed again in the specification.
[0103] The above only describes preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the protection scope of the application.
Claims
1. A speed bump laying device comprising a vehicle body (1) and a universal driving wheel (2) rotatably connected to the lower end of the vehicle body (1), characterized in that, Also include: Punching device, fixedly installed in the inside of the vehicle body (1) for opening and implanting bolts into the opening; Bolt conveying device, fixedly installed in the inside of the vehicle body (1) and located above the punching device for conveying bolts to the punching device; The bolt conveying device comprises: Feeding plate (3), fixedly installed on one side of the vehicle body (1) for carrying bolts; Chute (4), the chute (4) is provided on one side of the upper end of the feeding plate (3) along the length direction of the feeding plate (3); Material taking mechanism, located at the left end of the feeding plate (3); Wherein, the feeding plate (3) is inclinedly arranged, and the chute (4) is adjacent to the rear side wall of the feeding plate (3); The material taking mechanism comprises: Fixed plate A (5), fixedly installed on the left lower edge of the feeding plate (3); Material taking plate A (6), comprising a vertical part slidably connected to the left side wall of the feeding plate (3) and a horizontal part integrally formed on the left lower edge of the vertical part; Spring, fixedly connected between the fixed plate A (5) and the horizontal part; Material taking drag plate (8), located on the upper end face of the horizontal part, the upper end of the material taking drag plate (8) is provided with a recess part along the length direction thereof; Material taking plate B (9), vertically arranged on the upper end of the feeding plate (3), the connecting plate A is fixedly installed between the front and rear sides of the material taking plate B (9) and the material taking plate A (6), and a gap for a single bolt to enter is provided between the material taking plate B (9) and the material taking plate A (6); Electric push rod A (10), hinged to one side of the upper end edge of the fixed plate A (5); Wherein, the end of the material taking drag plate (8) away from the electric push rod A (10) is hinged to the upper end edge of the fixed plate A (5), the end of the material taking drag plate (8) away from the material taking plate A (6) is fixedly installed with a vertical plate, the output end of the electric push rod A (10) is hinged to the outer edge of the upper end of the vertical plate, when the electric push rod A (10) is in the fully extended state, the length direction of the material taking drag plate (8) is perpendicular to the length direction of the fixed plate A (5), at this time, the material taking plate A (6) is located on the front side of the material taking drag plate (8).
2. A speed hump laying apparatus as claimed in claim 1, wherein, The vehicle body (1) is in the shape of "door", the vehicle body (1) comprises: Lead screw A, rotatably connected to the upper side in the vehicle body (1); Moving plate, threadedly connected to the lead screw A; Drive motor B (101), fixedly installed on the outer side of the moving plate, the output shaft of the drive motor B (101) is fixedly installed with a lead screw B; 3. A speed hump laying apparatus as claimed in claim 2, wherein, Wherein, the outer side of the vehicle body (1) is fixedly installed with a drive motor A, the output end of the drive motor A is fixedly connected with the lead screw A, the height direction of the lead screw B is parallel to the moving plate, one side of the punching device is slidably connected to the rear side of the moving plate, the punching device is fixedly installed with a threaded connecting block (102) matched with the lead screw B, and the moving plate and the bolt conveying device are fixedly installed with a support frame.
4. A speed hump laying apparatus as claimed in claim 3, wherein, The recess part is fixedly installed with a positioning plate (103) on the side away from the chute (4), and the positioning plate (103) is embedded with a permanent magnet A. The punching device comprises: Fixed plate B (11), located below the fixed plate A (5) and vertically arranged, the threaded connecting block (102) is fixedly installed on the front side of the fixed plate B (11); Switching shaft (12), located on the rear side of the fixed plate B (11); Fixed shaft seat (13), fixedly installed on the rear side of the fixed plate B (11), both ends of the switching shaft (12) are rotatably connected to the fixed shaft seat (13); Fixed block (14), fixedly installed on the rear side of the fixed plate B (11) and adjacent to the fixed shaft seat (13); Slide plate (15), slidingly connected to the side of the fixed block (14) away from the fixed plate B (11); Electric push rod B (16), the fixed end of the electric push rod B (16) is slidingly connected to the rear side of the fixed plate B (11) and adjacent to the fixed block (14), the length direction of the electric push rod B (16) is parallel to the height direction of the fixed plate B (11); Support plate (17), located below the switching shaft (12), a connecting seat is fixedly installed between the upper end of the support plate (17) and one side of the switching shaft (12), and the connecting seat is provided with at least two groups; Drive motor C (18), fixedly installed on the upper end of the support plate (17); Wherein, the fixed end of the electric push rod B (16) and one side wall of the slide plate (15) are fixedly connected with a connecting plate B, one end of the switching shaft (12) extends to the rear side of the slide plate (15) through the fixed shaft seat (13) and is fixedly connected with a gear (19), the rear side of the slide plate (15) is integrally formed with a plurality of teeth matched with the gear (19), the output shaft of the drive motor C (18) extends downward through the lower end of the support plate (17) and is fixedly connected with a hexagonal screw rod, a permanent magnet B is embedded at the end of the hexagonal screw rod, and the magnetic force of the permanent magnet B on the screw rod is greater than that of the permanent magnet A.
5. A speed hump laying apparatus as claimed in claim 3, wherein, The punching device further comprises: Horizontal plate (20), fixedly installed on the front side of the fixed plate B (11); Drive motor D (21), fixedly installed on the upper end of the horizontal plate (20), the output end of the drive motor D (21) extends downward through the lower end of the horizontal plate (20) and is fixedly installed with a drill bit; Wherein, the lower end of the horizontal plate (20) is also embedded with a distance sensor.
6. A speed hump laying apparatus as claimed in claim 1, wherein, The width of the gap between the material taking plate A (6) and the material taking plate B (9) is equal to the outer diameter of the head of a single bolt, when the spring is in the extended state, the distance between the material taking plate B (9) and the feeding plate (3) is equal to the outer diameter of the head of a single bolt, and the horizontal height of the upper end of the material taking plate A (6) is equal to the horizontal height of the upper edge line on the left side of the feeding plate (3).
Citation Information
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