JP5784195B1 - Reach control device and reach forklift equipped with the device - Google Patents

Abstract

A reach control device that is relatively inexpensive and suitable for mass production, and a reach forklift equipped with the device. A mast position detection unit that outputs a detection signal obtained by converting a mast position into an angle, and a control unit that controls an electric reach cylinder so that the moving speed of the mast decreases as the detection signal moves away from a reference signal. 102, and the mast position detection unit 101 converts the mast position to a predetermined reference angle in the intermediate section of the reach stroke, and in the first section of the front end position portion of the reach stroke, the mast position becomes closer to the front end position. In the second section of the rear end position portion of the reach stroke, the difference from the reference angle increases as the mast position approaches the rear end position. The control unit 102 converts the angle into two variable angles, and uses the detection signal corresponding to the reference angle as a reference signal. [Selection] Figure 1

Description

  The present invention relates to a reach control device and a reach forklift provided with the device.

  2. Description of the Related Art Reach-type forklifts that move a mast that is movable in the front-rear direction along a pair of left and right straddle legs by an electric reach cylinder with a preset reach stroke are known (for example, Patent Documents). 1).

  As shown in FIG. 6, the reach forklift 1 </ b> B provided with the electric reach cylinder 20 is provided with a reach control device 200 for controlling the electric reach cylinder 20. The reach control device 200 detects the position of the mast 10 in the reach stroke (hereinafter referred to as “mast position”) and outputs a detection signal, and the detection signal output from the mast position detection unit 201. And a control unit 202 that controls the electric reach cylinder 20.

  The mast position detection unit 201 includes a multi-rotation potentiometer 210 and a pinion 220 attached to the mast 10, and a rack 230 attached to the straddle leg 3. As shown in FIG. 7, when the mast 10 is moved between the front end position and the rear end position of the reach stroke, the pinion 220 moves with the mast 10 along the rack 230 in the front-rear direction while rotating. The potentiometer 210 outputs a detection signal corresponding to the rotational speed of the pinion 220 to the control unit 202. The detection signal increases when the number of rotations of the pinion 220 is large, and the detection signal decreases when the number of rotations of the pinion 220 is small.

  The control unit 202 is composed of, for example, a microprocessor. The control unit 202 stores in advance control software for controlling the moving speed of the mast 10 based on the relationship between the rotation speed of the pinion 220 (the magnitude of the detection signal) and the mast position. This control software can rotate the pinion 220 when the mast 10 is moved from the rear end position to the front end position, or the pinion 220 rotation when the mast 10 is moved from the front end position to the rear end position. The number is set in advance as a specified rotational speed, and the mast 10 is decelerated when the rotational speed of the pinion 220 reaches the specified rotational speed.

  Therefore, according to the reach type forklift 1B, when the mast 10 is moved in the forward direction, the moving speed of the mast 10 is automatically lowered before the front end position, so that the mast 10 can be smoothly stopped at the front end position. In the case where the mast 10 is moved in the rearward direction, the moving speed of the mast 10 can be automatically lowered before the rear end position, so that the mast 10 can be smoothly stopped at the rear end position.

Japanese Utility Model Publication No. 62-121298

  However, in the conventional reach control device 200, parts such as the multi-rotation type potentiometer 210, the pinion 220, and the rack 230 that constitute the mast position detection unit 201 are all expensive, so that the cost of the reach control device 200 is increased, and consequently the reach forklift There was a problem that the cost increased by 1B.

  In general, reach-type forklifts have different reach strokes depending on the model. Therefore, in the conventional reach control device 200, the length of the rack 230 is changed according to the model, or control software (mainly stored in the control unit 202). In addition, it is necessary to change the relationship between the rotational speed of the pinion 220 and the mast position. For this reason, the conventional reach control device 200 has a problem that it is not suitable for mass production.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a reach control device that is relatively inexpensive and suitable for mass production, and a reach-type forklift equipped with the device.

In order to solve the above-described problem, a reach control device according to the present invention includes a mast that is movable in the front-rear direction along a pair of left and right straddle legs, and a front end of a reach stroke set in advance by an electric reach cylinder. A reach control device that moves between a position and a rear end position, detects a mast position in a reach stroke by converting it into an angle, and outputs a detection signal corresponding to the angle, and a detection signal A control unit that controls the electric reach cylinder so that the moving speed of the mast decreases as the distance from the preset reference signal increases ,
The mast position detection unit converts the mast position to a predetermined reference angle in the intermediate section from the first position within the reach stroke to the second position behind the first position, and converts the mast position from the first position to the front end position. In the first section, the mast position is converted to a first variable angle so that the difference from the reference angle increases as the position approaches the front end position. In the second section from the second position to the rear end position, the mast position is changed. The second variable angle is converted so that the difference from the reference angle increases as it approaches the rear end position, and the control unit presets a detection signal corresponding to the reference angle as a reference signal ,
The mast position detection unit includes first angle conversion means and second angle conversion means attached to the straddle leg, and angle detection means attached to the mast,
The angle detection means detects the swing member that swings in contact with the first angle conversion means and the second angle conversion means, and the swing angle of the swing member as an angle corresponding to the mast position, and corresponds to the angle. A detection member that outputs a detection signal, the mast position in the first section is converted into a first variable angle by the first angle conversion means and the swing member, and the second angle conversion means and the swing member Convert the mast position in two sections to the second variable angle,
The swing member includes a lever whose one end is in contact with the first angle conversion means and the second angle conversion means, a swing shaft provided at the other end of the lever, A first pin fixed to the mast on one end side, a second pin fixed to the lever on one end side of the lever from the first pin, a coil portion wound around the swing shaft, and the first and second pins A neutral spring that includes a pair of arm portions sandwiched between and holds the lever in a neutral position in the intermediate section,
The detection member has a sensor arm whose one end contacts the second pin and swings with the lever, and detects a swing angle of the sensor arm as an angle corresponding to the mast position, and outputs a detection signal corresponding to the angle. It is characterized by including these.

  In the reach control device, the first angle conversion means has a first contact surface that comes into contact with the swing member, and the first contact surface has a difference between the first variable angle and the reference angle as the mast approaches the front end position. It is preferable to incline so that becomes large.

  In the reach control device, the second angle conversion means has a second contact surface with which the swing member comes into contact, and the second contact surface has a second variable angle and a reference angle as the mast approaches the rear end position. It is preferable to incline so as to increase the difference.

  In order to solve the above problems, a reach-type forklift according to the present invention includes any one of the reach control devices described above.

  According to the present invention, it is possible to provide a reach control device that is relatively inexpensive and suitable for mass production, and a reach-type forklift equipped with the device.

It is a top view which shows the principal part of the reach type forklift provided with the reach control apparatus which concerns on this invention. It is a top view which shows the relationship between the reach control apparatus concerning this invention, a mast, and a straddle leg. It is a figure which shows the angle detection means of this invention, Comprising: (A) is a top view, (B) is a front view, (C) is sectional drawing in the C-C 'line of (A). It is a top view which shows the mast position detection part of this invention, (A) is a figure in a front end position, (B) is a figure in a 1st position, (C) is a figure in a 2nd position, (D) is a rear end. FIG. (A) is a figure which shows the relationship between a mast position and an angle, (B) is a figure which shows the relationship between a mast position and a detection signal, (C) is a figure which shows the relationship between a mast position and a moving speed. It is a top view which shows the principal part of the reach type forklift provided with the conventional reach control apparatus. It is a top view which shows the relationship between the conventional reach control apparatus, a mast, and a straddle leg.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a reach control device according to the present invention and a reach-type forklift equipped with the device will be described with reference to the accompanying drawings. Note that the front-rear, left-right, and up-down directions are based on a reach-type forklift vehicle unless otherwise specified. Further, in order to facilitate understanding of the invention, in the accompanying drawings, there are places that do not represent a section even if they are sectional views, and those that do not represent a plane even if they are plan views.

  As shown in FIGS. 1 and 2, the reach forklift 1 </ b> A according to the present embodiment is capable of moving in a front-rear direction along a pair of left and right straddle legs 3 provided at the front portion of the vehicle 2 and the straddle legs 3. A mast 10 provided, a lift bracket 4 provided on the mast 10 so as to be movable up and down, a pair of left and right forks 5 provided on the lift bracket 4, and a front end position and a rear end of a reach stroke set in advance for the mast 10 An electric reach cylinder 20 that moves between the positions and a reach control device 100 that controls the electric reach cylinder 20 are mainly provided.

  The electric reach cylinder 20 includes a ball screw 21 that expands and contracts in the front-rear direction of the vehicle 2, an electric motor 22, a housing 23 that fixes the ball screw 21 and the electric motor 22, and a left and right pair that supports shafts provided on the left and right sides of the housing 23. The bearing 24 is mainly provided. The electric reach cylinder 20 is provided so as to be swingable around the left and right axes of the housing 23 in a vertical plane extending in the front-rear direction of the vehicle 2.

  The mast 10 is connected to the tip portion of the ball screw 21 and is provided so as to be movable in the front-rear direction along the straddle leg 3, and a pair of left and right outer masts erected on the front portion of the reach carriage 11. 12 and a pair of left and right inner masts 13 that move in the vertical direction along the outer mast 12.

  The reach control device 100 detects the position of the mast 10 between the front end position and the rear end position of the reach stroke (hereinafter referred to as the mast position) by converting it into an angle, and outputs a detection signal corresponding to the angle. It mainly includes a detection unit 101 and a control unit 102 that controls the electric motor 22 of the electric reach cylinder 20 so that the moving speed of the mast 10 decreases as the detection signal moves away from a preset reference signal. The control unit 102 is composed of, for example, a microprocessor.

  The mast position detection unit 101 mainly includes an angle detection unit 110, a first angle conversion unit 120, and a second angle conversion unit 130. The angle detection means 110 is attached to the front portion of the left side surface of the mast 10 (the front portion of the left side surface of the reach carriage 11). The first angle conversion means 120 and the second angle conversion means 130 are attached to the upper surface of the straddle leg 3 with a space therebetween by means (for example, screwing) that can be easily attached / detached.

  As shown in FIGS. 3A to 3C, the angle detection means 110 includes a lever 111, a swing shaft 112, a first fixing member 113a and a second fixing member 113b, a first pin 114, and a second pin. A pin 115, a neutral spring 116, a sensor arm 117, and a sensor 118 are mainly provided. The lever 111, the swing shaft 112, the first pin 114, the second pin 115, and the neutral spring 116 correspond to the “swing member” of the present invention, and the sensor arm 117 and the sensor 118 correspond to the “detection member” of the present invention. It corresponds to.

  The first fixing member 113 a is a plate-like member formed in a substantially L shape when viewed from the front-rear direction of the vehicle 2, and is attached to the front portion of the left side surface of the mast 10. The second fixing member 113b is formed so that both ends thereof are in contact with the upper surface of the bottom plate of the first fixing member 113a and the central portion is separated from the upper surface of the bottom plate of the first fixing member 113a when viewed from the left-right direction of the vehicle 2. The both ends are attached to the first fixing member 113a.

  The lever 111 includes a lever main body 111a and a roller 111b. The lever main body 111a is a plate-like member provided so as to be able to swing, and a roller 111b is rotatably provided below one end portion. A swing shaft 112 is provided at the other end of the lever body 111a.

  The swing shaft 112 is disposed perpendicular to the lever main body 111a, one end is rotatably attached to the bottom plate of the first fixing member 113a, and the other end is attached to the other end of the lever main body 111a. ing.

  The first pin 114 is arranged vertically similarly to the swing shaft 112 so as to be positioned on one end portion side (left side of the vehicle 2) of the lever main body 111a with respect to the swing shaft 112. One end of the first pin 114 is attached to the bottom plate of the first fixing member 113a. In other words, one end of the first pin 114 is fixed to the mast 10 via the first fixing member 113a. The other end of the first pin 114 is positioned at a height that allows contact with a pair of arms 116b and 116c of a neutral spring 116, which will be described later, and does not contact the lower surface of the lever body 111a.

  The second pin 115 is vertically positioned so as to be positioned closer to one end of the lever body 111a (left side of the vehicle 2) than the first pin 114 in a state where the lever 111 is held at the neutral position (the state shown in FIG. 3). And is fixed to the lever main body 111a. One end portion of the second pin 115 is located at a height at which it can come into contact with the pair of arm portions 116b, 116c of the neutral spring 116. The other end of the second pin 115 is positioned at a height at which it can come into contact with the sensor arm 117.

  The neutral spring 116 includes a coil portion 116a wound around the swing shaft 112 and a pair of arm portions 116b and 116c that sandwich the first pin 114 and the second pin 115, and holds the lever 111 in a neutral position. The pair of arm portions 116 b and 116 c are expanded by a second pin 115 that swings together with the lever 111.

  For example, as shown in FIG. 4A, when the mast 10 is moved to the front end position, the lever 111 receives the force acting in the rearward direction of the vehicle 2 by the first angle conversion means 120. Oscillates in the rear direction, and the arm portion 116b of the neutral spring 116 is expanded in the rear direction by the second pin 115. At this time, the arm 116 c of the neutral spring 116 is restricted from being expanded rearward by the first pin 114.

  On the other hand, when the mast 10 is moved to the rear end position as shown in FIG. 4D, the lever 111 receives the force acting in the forward direction of the vehicle 2 by the second angle conversion means 130, so 115 swings forward, and the arm portion 116c of the neutral spring 116 is expanded forward by the second pin 115. At this time, the arm portion 116 b of the neutral spring 116 is restricted from being expanded forward by the first pin 114.

  Referring to FIGS. 3A to 3C again, the sensor arm 117 is a plate-like member provided so as to be swingable, and sandwiches the other end portion of the second pin 115 on the longitudinal center line. As shown, one end is formed in a bifurcated shape. For this reason, when the lever 111 swings, the sensor arm 117 swings by the same amount as the lever 111.

  The sensor 118 is attached to the upper surface of the central portion of the second fixing member 113b and is connected to the other end of the sensor arm 117. The sensor 118 detects the swing angle of the sensor arm 117 as an angle corresponding to the mast position, and outputs a detection signal corresponding to the angle. In the present embodiment, a potentiometer is used as the sensor 118, and a potentiometer arm is used as the sensor arm 117.

  4A and 4B, the first angle conversion means 120 is a block body having a first contact surface (right side surface) with which the roller 111b of the angle detection means 110 contacts. As the mast 10 approaches the front end position, the first contact surface has an angle detected by the sensor 118 (corresponding to a “first variable angle” of the present invention) and an angle detected by the sensor 118 at the neutral position (hereinafter referred to as “first position angle”). , So that the difference from the reference angle is large.

  Referring to FIGS. 4C and 4D, the second angle conversion means 130 is a block body having a second contact surface (right side surface) with which the roller 111b of the angle detection means 110 contacts. The second contact surface is inclined so that the difference between the angle detected by the sensor 118 (corresponding to the “second variable angle” of the present invention) and the reference angle increases as the mast 10 approaches the rear end position. Yes.

  FIG. 5A is a diagram showing the relationship between the mast position and the angle [°] detected by the sensor 118, and FIG. 5B shows the mast position and the detection signal [V] output from the sensor 118. FIG. 5C is a diagram showing the relationship between the mast position and the moving speed of the mast 10.

  In these drawings, X1 is a front end position, and X2 is a state where the lever 111 is in contact with the first angle converting means 120 but the lever 111 is not receiving a force acting backward from the first angle converting means 120 (FIG. 4). (B) state) (corresponding to the “first position” of the present invention), X3 works forward from the second angle conversion means 130 although the lever 111 is in contact with the second angle conversion means 130. A position (corresponding to the “second position” in the present invention) in which the force is not received (state shown in FIG. 4C), X4 is the rear end position. The section from the front end position X1 to the first position X2 corresponds to the “first section” of the present invention, and the section from the first position X2 to the second position X3 corresponds to the “intermediate section” of the present invention. The section from the second position X3 to the rear end position X4 corresponds to the “second section” of the present invention.

  Furthermore, the lever 111 is assumed to be displaced from +35 [°] to −35 [°] between the front end position X1 and the rear end position X4. The sensor arm 117 is, for example, a potentiometer arm having an operating angle of 70 [°], and is displaced by 0 [°] ± 35 [°] in accordance with the displacement of the lever 111 (0 [°] to 70 [°]. ] To be displaced). Further, the power source of the potentiometer (the voltage value of the detection signal of the sensor 118) is 5.0 [V] at the maximum, and 2.5 [V] is set to ± 2.5 [in accordance with the displacement of the operating angle in a neutral manner. V] change (0 [V] to 5.0 [V] change).

  As shown in FIGS. 5A and 5B, in the intermediate section, the lever 111 is held in the neutral position, so the angle detected by the sensor 118 is 0 [°], which is the reference angle, and the sensor 118 The detection signal to be output is a voltage signal of 2.5 [V].

  In the first section, the angle (first variable angle) detected by the sensor 118 increases as the mast 10 approaches the front end position X1, and becomes +35 [°] at the front end position X1. In addition, the voltage value of the detection signal output from the sensor 118 in the first section increases as the mast 10 approaches the front end position X1, and is 5.0 [V] at the front end position X1.

  In the second section, the angle (second variable angle) detected by the sensor 118 decreases as the mast 10 approaches the rear end position X4, and becomes −35 [°] at the rear end position X4. In addition, the voltage value of the detection signal output from the sensor 118 in the second section decreases as the mast 10 approaches the rear end position X4, and becomes 0 [V] at the rear end position X4.

  The control unit 102 stores in advance control software for controlling the moving speed of the mast 10 based on the relationship between the angle detected by the sensor 118 (detection signal output from the sensor 118) and the mast position. This control software presets the moving speed of the mast 10 when the detection signal output from the sensor 118 matches a preset reference signal (in this embodiment, a voltage signal of 2.5 [V]). On the other hand, when the detection signal output from the sensor 118 does not match the reference signal, the movement speed of the mast 10 decreases as the detection signal output from the sensor 118 moves away from the reference signal. is there. The moving speed Y is determined according to the tilt angle of the reach lever provided at the driver's seat of the vehicle 2. If the reach angle of the reach lever is large, the moving speed Y increases. If the reach angle of the reach lever is small, the moving speed Y decreases.

  The controller 102 controls the moving speed of the mast 10 as shown in FIG. That is, since a voltage signal of 2.5 [V] that is a reference signal is output from the sensor 118 in the intermediate section, the control unit 102 controls the electric reach cylinder so that the moving speed of the mast 10 becomes the moving speed Y. 20 electric motors 22 are controlled.

  In the first section, the detection signal output from the sensor 118 is further away from the reference signal as the mast 10 approaches the front end position X1, so the control unit 102 moves the mast 10 as the mast 10 approaches the front end position X1. The mast 10 is smoothly stopped at the front end position X1 where the detection signal is 5.0 [V].

  In the second section, the detection signal output from the sensor 118 is further away from the reference signal as the mast 10 approaches the rear end position X4. Therefore, the control unit 102 increases the mast 10 closer to the rear end position X4. The moving speed is decelerated, and the mast 10 is smoothly stopped at the rear end position X4 where the detection signal becomes 0 [V].

  After all, in the reach control device 100 and the reach forklift 1A according to the present embodiment, expensive parts such as the multi-rotation potentiometer 210, the pinion 220, and the rack 230 used in the conventional reach forklift 1B shown in FIG. 6 are used. Without using relatively inexpensive parts such as the angle detection means 110 including a general potentiometer, or the first angle conversion means 120 and the second angle conversion means 130 formed of a block body provided only in a section where the mast 10 is decelerated. Since the mast position detection unit 101 is configured by using it, the cost of the entire apparatus can be reduced.

  Furthermore, in the reach control device 100 and the reach forklift 1A according to the present embodiment, even if the reach stroke changes, it is not necessary to change the control software stored in the control unit 102, and the first angle conversion means 120 and the first This can be handled simply by changing the mounting position of the two-angle conversion means 130. For example, when the reach stroke is long, the distance between the first angle conversion means 120 and the second angle conversion means 130 may be widened, and when the reach stroke is short, the first angle conversion means 120 and the second angle conversion means. What is necessary is just to narrow and attach 130. Therefore, it can be said that the reach control device 100 according to the present embodiment is suitable for mass production.

  While the embodiments of the reach control device according to the present invention and the reach-type forklift provided with the device have been described above, the present invention is not limited to the above-described embodiment.

  For example, in the above-described embodiment, the mast position detection unit 101 is configured by using components such as the angle detection unit 110 including a general potentiometer, the first angle conversion unit 120 and the second angle conversion unit 130 made of a block body. However, the mast position is converted into a predetermined reference angle in the intermediate section, and the mast position is converted into the first variable angle so that the difference from the reference angle increases as it approaches the front end position X1 in the first section. If the mast position is converted to the second variable angle so that the difference from the reference angle increases as it approaches the rear end position X4, and a detection signal corresponding to these angles can be output, the mast position detection is possible. The configuration of the unit 101 can be changed as appropriate.

  If the first angle conversion means 120 has a first contact surface that is inclined so that the difference between the first variable angle and the reference angle increases as the mast 10 approaches the front end position X1, The shape can be changed as appropriate. For example, the first contact surface may be changed to a shape having a curved gradient in plan view, or may be changed to a combined shape of a curved gradient and a linear gradient. The first angle conversion means 120 may be made of any material as long as it can be attached to the straddle leg 3.

  If the second angle conversion means 130 has a second contact surface that is inclined so that the difference between the second variable angle and the reference angle increases as the mast 10 approaches the rear end position X4, The shape can be changed as appropriate. For example, the second contact surface may be changed to a shape having a curved gradient in plan view, or may be changed to a combined shape of a curved gradient and a linear gradient. The second angle conversion means 130 may be made of any material as long as it can be attached to the straddle leg 3.

1A reach type forklift 2 vehicle 3 straddle leg 4 lift bracket 5 fork 10 mast 11 reach carriage 12 outer mast 13 inner mast 20 electric reach cylinder 21 ball screw 22 motor 23 housing 24 bearing 100 reach control device 101 mast position detection unit 102 control unit 110 angle Detection means 111 Lever 111a Lever body 111b Roller 112 Oscillating shaft 113a First fixing member 113b Second fixing member 114 First pin 115 Second pin 116 Neutral spring 116a Coil portions 116b, 116c Arm portion 117 Sensor arm 118 Sensor 120 First Angle conversion means 130 Second angle conversion means

Claims (4)

A reach control device for moving a mast, which is movable in the front-rear direction along a pair of left and right straddle legs, between a front end position and a rear end position of a preset reach stroke by an electric reach cylinder. ,
A mast position detection unit that detects and converts a mast position in the reach stroke into an angle, and outputs a detection signal corresponding to the angle;
A control unit that controls the electric reach cylinder so that the moving speed of the mast decreases as the detection signal moves away from a preset reference signal;
With
The mast position detector
In the intermediate section from the first position within the reach stroke to the second position behind the first position, the mast position is converted to a predetermined reference angle;
In the first section from the first position to the front end position, the mast position is converted into a first variable angle such that the difference from the reference angle increases as the position approaches the front end position.
In the second section from the second position to the rear end position, the mast position is converted to a second variable angle such that the difference from the reference angle increases as the rear end position is approached.
The controller is
A detection signal corresponding to the reference angle is preset as the reference signal ,
The mast position detector
First angle conversion means and second angle conversion means attached to the straddle leg;
Angle detection means attached to the mast,
The angle detection means includes
A swing member that swings in contact with the first angle conversion means and the second angle conversion means;
Detecting a swing angle of the swing member as an angle corresponding to the mast position, and outputting a detection signal corresponding to the angle,
The mast position in the first section is converted into the first variable angle by the first angle conversion means and the swing member, and the second angle conversion means and the swing member in the second section Converting the mast position to the second variable angle;
The swing member is
A lever whose one end is in contact with the first angle conversion means and the second angle conversion means and swings;
A swing shaft provided at the other end of the lever;
A first pin fixed to the mast on one end side of the lever with respect to the swing shaft;
A second pin fixed to the lever on one end side of the lever from the first pin;
A neutral spring comprising a coil portion wound around the swing shaft and a pair of arm portions sandwiching the first pin and the second pin, and holding the lever in a neutral position in the intermediate section,
The detection member is
A sensor arm whose one end is in contact with the second pin and swings with the lever;
A reach control device , comprising: a sensor that detects a swing angle of the sensor arm as an angle corresponding to the mast position, and outputs a detection signal corresponding to the angle . The first angle conversion means has a first contact surface with which the rocking member contacts,
The first contact surface is inclined so that the difference between the first variable angle and the reference angle increases as the mast approaches the front end position.
The reach control device according to claim 1. The second angle conversion means has a second contact surface with which the rocking member contacts,
The second contact surface is inclined so that the difference between the second variable angle and the reference angle increases as the mast approaches the rear end position.
The reach control device according to claim 1, wherein The reach control device according to any one of claims 1 to 3 is provided.
Reach type forklift.

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