Universal movable arm bucket rod screw seat positioning device

Abstract

The utility model belongs to the technical field of positioning tools, and relates to a universal movable arm bucket rod screw seat positioning device which comprises a reference frame, an adjusting frame, an angle adjusting mechanism, a distance adjusting mechanism and a screw seat positioning block. The reference frame comprises a base plate and two positioning pins arranged on the two sides of the base plate respectively, and the angle adjusting mechanism is arranged on the base plate and used for adjusting the angle of the adjusting frame relative to the reference frame. And the distance adjusting mechanism is arranged on the adjusting frame and is used for adjusting the relative position of the screw seat positioning block relative to the adjusting frame. According to the positioning tool, position positioning can be conducted on the movable arm or the bucket rod through the reference frame, the rotating angle of the adjusting frame relative to the reference frame is controlled through the angle adjusting mechanism, the position of the screw base positioning block relative to the adjusting frame is controlled through the distance adjusting mechanism, and therefore precise positioning of the screw base on the movable arm or the bucket rod is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning tooling, and particularly relates to a general boom and stick wire seat positioning device. Background Technique

[0002] The boom and stick refer to a working device of an excavator, and their main functions are to control the excavation, loading and other actions of the digging bucket. The boom is connected to the frame and has a relatively long arm length, so it is commonly called the "big arm"; the stick is connected to the digging bucket and has a relatively short arm length, so it is commonly called the "small arm". The working device of the excavator adopts the principle of a linkage mechanism, and the movement of each part is realized by the telescopic movement of the oil cylinder. The connections between the components of the backhoe working device are all hinged, and various actions during the excavation process are realized by changing the stroke of each oil cylinder. The stick is hinged to the upper end of the boom, and by changing the stroke of the oil cylinder installed on the upper plane of the boom beam, the stick rotates around the hinge point at the upper end of the boom. The digging bucket is hinged to the lower end of the stick, and by changing the stroke of the oil cylinder installed on the lower surface of the stick arm beam, the digging bucket rotates around the hinge point at the lower end of the stick.

[0003] Chinese Patent CN 217475801U discloses a stick wire seat positioning tooling, which can be fixed on the stick side plate by using a positioning base, and then the steel pipe wire seat and the ball valve wire seat are respectively positioned by using a first positioning component and a second positioning component. Here, when positioning the stick, it relies on the welding edge of the stick, but the position of the welding edge itself is not accurate enough, resulting in an unsatisfactory position of the wire seat.

[0004] Therefore, it is necessary to improve the structure of the positioning device to solve the above problems. Summary of the Invention

[0005] The main purpose of the utility model is to provide a general boom and stick wire seat positioning device, which can meet the wire seat positioning requirements of various booms or sticks.

[0006] The utility model realizes the above purpose through the following technical solutions: a general boom and stick wire seat positioning device, including a reference frame, an adjustment frame, an angle adjustment mechanism, a distance adjustment mechanism and a wire seat positioning block; the reference frame includes a base plate and two positioning pins respectively arranged on both sides of the base plate, the angle adjustment mechanism is arranged on the base plate and used to adjust the angle of the adjustment frame relative to the reference frame, and the distance adjustment mechanism is arranged on the adjustment frame and used to adjust the relative position of the wire seat positioning block relative to the adjustment frame.

[0007] Specifically, the positioning pins are divided into a first positioning pin fixedly connected to one end of the substrate and a second positioning pin movably arranged at the other end of the substrate. The first positioning pin is close to the angle adjusting mechanism. A first slide rail is arranged at one end of the substrate away from the angle adjusting mechanism. The second positioning pin is fixed on a slider that slides along the first slide rail, and the slider is fixedly arranged on the substrate in a position-adjustable manner.

[0008] Specifically, the angle adjusting mechanism includes a first servo motor, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The first synchronous pulley is rotatably connected to the substrate around a vertical axis. The second synchronous pulley is fixedly connected to the lower part of the adjusting frame around a vertical axis. The first servo motor is fixed on the substrate and drives the first synchronous pulley to rotate. The first synchronous pulley and the second synchronous pulley are linked by the synchronous belt.

[0009] Further, the angle adjusting mechanism further includes a tension pulley pressing on the outer surface of the synchronous belt. A kidney-shaped hole is provided on the substrate. The rotating shaft of the tension pulley passes through the kidney-shaped hole and is fixed to the substrate with bolts.

[0010] Specifically, the adjusting frame is strip-shaped, and a pair of second slide rails are arranged along the length direction on its upper part. The distance adjusting mechanism includes a second servo motor, a lead screw, a nut sleeve, a slide seat, and a connecting rod. The lead screw is rotatably connected to the adjusting frame and is located between the two second slide rails. The second servo motor is fixed on the adjusting frame and drives the lead screw to rotate. The nut sleeve is fixed to the bottom of the slide seat and cooperates with the lead screw. The slide seat slides along the second slide rail. The connecting rod connects the slide seat and the wire seat positioning block.

[0011] Further, an induction sheet is provided at the bottom of the slide seat, and a plurality of sensors cooperating with the induction sheet are provided on one side of the adjusting frame.

[0012] The beneficial effects of the technical solution of the present utility model are:

[0013] This positioning tooling can use the reference frame to position on the boom or the stick, control the rotation angle of the adjusting frame relative to the reference frame through the angle adjusting mechanism, and control the position of the wire seat positioning block relative to the adjusting frame through the distance adjusting mechanism, so as to provide precise positioning of the wire seat on the boom or the stick. Description of the Drawings

[0014] Figure 1 It is a three-dimensional view of the universal boom and stick wire seat positioning device in the embodiment;

[0015] Figure 2 It is a three-dimensional view of the universal boom and stick wire seat positioning device from another angle in the embodiment

[0016] Figure 3 Stereogram of the general boom stick seat positioning device for an embodiment used on the boom.

[0017] The numbers in the figure indicate:

[0018] 1 - Seat positioning device

[0019] 11 - Reference frame, 111 - Substrate, 1111 - Kidney-shaped hole, 112a - First positioning pin, 112b - Second positioning pin, 113 - First slide rail, 114 - Slide block;

[0020] 12 - Adjustment frame, 121 - Second slide rail, 122 - Inductor

[0021] 13 - Angle adjustment mechanism, 131 - First servo motor, 132 - First synchronous pulley, 133 - Second synchronous pulley, 134 - Synchronous belt, 135 - Tension pulley

[0022] 14 - Distance adjustment mechanism, 141 - Second servo motor, 142 - Lead screw, 143 - Nut sleeve, 144 - Slide seat, 145 - Connecting rod, 146 - Inductive sheet

[0023] 15 - Seat positioning block

[0024] 2 - Boom, 21 - First wing plate, 22 - Second wing plate, 23 - Seat Detailed implementation mode

[0025] The present utility model will be further described in detail below with reference to specific embodiments.

[0026] Embodiment:

[0027] As Figures 1 to 3 shown, a general boom stick seat positioning device 1 of the present utility model includes a reference frame 11, an adjustment frame 12, an angle adjustment mechanism 13, a distance adjustment mechanism 14, and a seat positioning block 15.

[0028] As Figure 1 and Figure 2 shown, the reference frame 11 includes a substrate 111 and two positioning pins (the first positioning pin 112a and the second positioning pin 112b) respectively arranged on both sides of the substrate 111. The angle adjustment mechanism 13 is arranged on the substrate 111 and is used to adjust the angle of the adjustment frame relative to the reference frame 11. The distance adjustment mechanism 14 is arranged on the adjustment frame 12 and is used to adjust the relative position of the seat positioning block 15 relative to the adjustment frame 15.

[0029] The wire seat positioning block 15 can provide a reference plane for the wire seat 23. In this embodiment, the wire seat positioning block 15 is an L-shaped component, so it can provide two mutually perpendicular reference planes for the wire seat 23. The two positioning pins on the reference frame 11 can be integrally positioned by using the pin holes on the first wing plate 21 and the second wing plate 22 on the boom 2 respectively, so that the wire seat positioning device 1 can be first erected on the boom 2 or the dipper stick. The position of the wire seat 23 is determined by the rotation angle of the adjustment frame 12 relative to the reference frame 11 and the distance of the wire seat positioning block 15 relative to the rotating shaft. The angle adjustment mechanism 13 controls the rotation angle of the adjustment frame 12 relative to the reference frame 11, and the distance adjustment mechanism 14 controls the position of the wire seat positioning block 15 relative to the adjustment frame 12, so as to provide accurate positioning of the wire seat 23 on the boom 2 or the dipper stick.

[0030] As Figures 1 to 3 shown, the positioning pins are divided into a first positioning pin 112a fixedly connected to one end of the base plate 111 and a second positioning pin 112b movably arranged at the other end of the base plate 111. The first positioning pin 112a is close to the angle adjustment mechanism 13. A first slide rail 113 is arranged at one end of the base plate 111 away from the angle adjustment mechanism 13. The second positioning pin 112b is fixed on a slider 114 that slides along the first slide rail 113.

[0031] For different booms 2 or dipper sticks, the axial center distance between the first positioning pin 112a and the second positioning pin 112b is probably different. Therefore, the relative distance between the second positioning pin 112b and the first positioning pin 112a should be adjustable through the cooperation of the slider 114 and the first slide rail 113. In this way, it can flexibly adapt to the positioning on various booms 2 or dipper sticks. Since the angle adjustment mechanism 13 occupies most of the position at one end of the base plate 111, it is not suitable to make the first positioning pin 112a into an adjustable structure, while the second positioning pin 112b can be more conveniently set into an adjustable structure on the other side of the base plate 111.

[0032] As Figure 1 and Figure 2 shown, the angle adjustment mechanism 13 includes a first servo motor 131, a first synchronous pulley 132, a second synchronous pulley 133 and a synchronous belt 134. The first synchronous pulley 132 is rotatably connected to the reference frame 11 around a vertical axis. The second synchronous pulley 133 is fixedly connected to the lower part of the adjustment frame 12 around a vertical axis. The first servo motor 131 is fixed on the reference frame 11 and drives the first synchronous pulley 132 to rotate. The first synchronous pulley 132 and the second synchronous pulley 133 are linked by the synchronous belt 134.

[0033] In order not to interfere with the position of the boom 2, the first servo motor 131 needs to be arranged above the substrate 111, and then drives the rotation of the entire adjusting frame 12 through the synchronous belt 134. The first servo motor 131 is outside the rotation range of the adjusting frame 12. The synchronous belt 134 transmission method can also avoid the problem of increased wear caused by the coaxiality difference between the first servo motor 131 and the rotating shaft.

[0034] As Figure 1 shown, the angle adjusting mechanism 13 further includes a tension pulley 135 pressing on the outer surface of the synchronous belt 134. A waist-shaped hole 1111 is provided on the substrate 111. The rotating shaft of the tension pulley 135 passes through the waist-shaped hole 1111 and is fixed to the substrate 111 with bolts (not shown).

[0035] The axial position of the tension pulley 135 can be adjusted along the waist-shaped hole 1111. The purpose of setting the tension pulley 135 is to control the tightness of the synchronous belt 134 and avoid the problem of inaccurate angle control caused by slipping between the synchronous belt 134 and the two synchronous belt pulleys during the transmission process.

[0036] As Figure 1 shown, the adjusting frame 12 is strip-shaped and a pair of second slide rails 121 are arranged along the length direction of its upper part. The distance adjusting mechanism 14 includes a second servo motor 141, a lead screw 142, a nut sleeve 143, a slide seat 144 and a connecting rod 145. The lead screw 142 is rotatably connected to the adjusting frame 12 and is located between the two second slide rails 121. The second servo motor 141 is fixed to the adjusting frame 12 and drives the lead screw 142 to rotate. The nut sleeve 143 is fixed to the bottom of the slide seat 144 and cooperates with the lead screw 142. The slide seat 144 slides along the second slide rail 121. The connecting rod 145 connects the slide seat 144 and the wire seat positioning block 15.

[0037] The second slide rail 121 restricts the moving direction of the slide seat 144. Using the transmission relationship between the lead screw 142 and the nut sleeve 143, the second servo motor 141 finely adjusts the position of the slide seat 144, so as to meet the distance relationship between the wire seat positioning block 15 and the rotating shaft.

[0038] As Figure 1 and Figure 2 shown, an induction sheet 146 is provided at the bottom of the slide seat 144, and a plurality of sensors 122 cooperating with the induction sheet 146 are provided on one side of the adjusting frame 12.

[0039] Here, the position of the sensor 122 is used to determine the reference position, and the sensing piece 146 can be sensed every time it passes by a sensor 122. In this embodiment, there are three sensors 122, which respectively represent the negative limit, the origin, and the positive limit in sequence, and the origin is the centering position. The centering method is as follows: The second servo motor 141 causes the sensing piece 146 to quickly move from the positive limit to the origin. When it is detected by the sensor at the origin position, the second servo motor 141 decelerates for the first time until the sensing piece 146 is detected by the sensor at the negative limit. The second servo motor 141 reverses its rotation direction and decelerates for the second time. When the sensing piece 146 returns to the origin position, the second servo motor 141 stops completely, thus completing the origin recording.

[0040] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A universal boom arm screw seat positioning device, characterized in that: It includes a reference frame, an adjustment frame, an angle adjustment mechanism, a distance adjustment mechanism and a wire seat positioning block; the reference frame includes a base plate and two positioning pins arranged on both sides of the base plate, the angle adjustment mechanism is arranged on the base plate and is used to adjust the angle of the adjustment frame relative to the reference frame, and the distance adjustment mechanism is arranged on the adjustment frame and is used to adjust the relative position of the wire seat positioning block relative to the adjustment frame.

2. The universal boom arm screw seat positioning device according to claim 1 is characterized in that: The positioning pin is divided into a first positioning pin fixedly connected to one end of the substrate and a second positioning pin movably arranged at the other end of the substrate. The first positioning pin is close to the angle adjustment mechanism. The substrate is provided with a first slide rail at the end away from the angle adjustment mechanism. The second positioning pin is fixed on a slider sliding along the first slide rail. The slider can be fixed on the substrate in a position-adjustable manner.

3. The universal boom arm screw seat positioning device according to claim 1 is characterized in that: The angle adjustment mechanism includes a first servo motor, a first synchronous pulley, a second synchronous pulley and a synchronous belt. The first synchronous pulley rotates around a vertical axis and is connected to the reference frame. The second synchronous pulley is fixedly connected to the lower part of the adjustment frame around a vertical axis. The first servo motor is fixed to the reference frame and drives the first synchronous pulley to rotate. The first synchronous pulley and the second synchronous pulley are linked by the synchronous belt.

4. The universal boom arm screw seat positioning device according to claim 3 is characterized in that: The angle adjustment mechanism also includes a tension wheel pressed on the outer surface of the synchronous belt, a waist-shaped hole is provided on the base plate, and a rotating shaft of the tension wheel passes through the waist-shaped hole and is fixed to the base plate with bolts.

5. The universal boom arm screw seat positioning device according to claim 1 is characterized in that: The adjusting frame is in the shape of a strip and a pair of second slide rails are arranged on its upper part along the length direction. The distance adjusting mechanism includes a second servo motor, a screw rod, a threaded sleeve, a slide seat and a connecting rod. The screw rod is rotatably connected to the adjusting frame and is located between the two second slide rails. The second servo motor is fixed to the adjusting frame and drives the screw rod to rotate. The threaded sleeve is fixed to the bottom of the slide seat and cooperates with the screw rod. The slide seat slides along the second slide rail. The connecting rod connects the slide seat and the screw seat positioning block.

6. The universal boom arm screw seat positioning device according to claim 5, characterized in that: A sensing sheet is arranged at the bottom of the slide seat, and a plurality of sensors cooperating with the sensing sheet are arranged at one side of the adjustment frame.

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