JP2010150014A - Fork fixing means - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fork fixing means that can be easily attached and detached without a tool, has a small number of components and can reduce cost therefor. <P>SOLUTION: In a fixing means 4 of a fork 8 provided in a mast device 3 having the fork 8 sliding along a back rest 10 in a front part of a vehicle 2, a plurality of engagement holes 24 are formed in the back rest 10, and a hole part 31 fitting with any one of the engagement holes 24 is formed in the fork 8, a fixing pin 35 engaging with the engagement holes 24 through the hole part 31 is provided, and a holding part 40 holding the fixing pin 35 against the fork 8. With this configuration, the fixing pin 35 engaged with any one of the engagement holes 24 is fixed by the holding part 40, so that the deviation of the fork 8 is prevented. The fixing pin 35 can be easily attached and detached without a tool to easily adjust distance between the forks 8. Further, the fixing means 4 for a fork is configured of small number of components, reducing cost. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a fork fixing device installed in a cargo handling device such as a forklift, and more particularly to a fork fixing device that prevents sliding of a fork that is slid along a backrest and prevents displacement of the fork. .

An example of a conventional fork fixing device is disclosed in Patent Document 1.
A forklift that is lifted and lowered along a mast provided at a front portion of the vehicle; a backrest that is lifted and lowered together with the carriage; and a pair of left and right forks that are slidable and detachable along the backrest; A forklift loading / unloading device is provided, and the fork fixing device disclosed in Patent Document 1 is included in the forklift loading / unloading device.

  In the cargo handling device, an upper hanging portion is formed at an upper end of the upright portion of the fork, the upper hanging portion is hooked on an upper member of the backrest, and a rear lower portion of the upright portion of the fork is a lower portion of the backrest. The forks are provided in contact with the front surface of the member so as to be slidable in the left-right direction.

  The fork fixing device includes an engaging member that sandwiches a lower member of the backrest that is in contact with a lower rear portion of the upright portion of the fork from the rear, and a bolt that fixes the engaging member. The engagement member is formed with a predetermined number of holes that are penetrated by a predetermined number of bolts. A lower portion of the rear surface of the upright portion of the fork, when the fork is slid by the bolt, A predetermined number of bolt holes communicating with the hole are formed, and the engaging member is fixed to each fork by the predetermined number of bolts.

In the above configuration, the upper hook portion of the fork is hooked on the upper member of the backrest, the lower rear portion of the fork is in contact with the front surface of the lower member of the backrest, and the fork moves the backrest in the vertical direction. By sandwiching the lower member of the backrest from the front-rear direction by tightening the bolts with the rear surface of the fork and the engaging member, the fork slides against the backrest is prevented. Misalignment of each fork is prevented.
Japanese Patent Laid-Open No. 04-182300

  However, in the above fork fixing device, when each fork is attached to or detached from the backrest, or when the interval between the forks is adjusted, that is, when the fork is intentionally shifted with respect to the backrest, It is necessary to engage and disengage a plurality of bolts using the above, and there is a possibility that a large amount of time and labor may be required for the work.

In order to solve the above problem, for example, a configuration of a one-motion fork fixing device is conceivable.
First, a plurality of engagement holes are formed in the lower member of the backrest. Then, a fixed pin that can be moved in and out of the fork in the front-rear direction and that can be inserted into and retracted from the engagement hole of the backrest, and the fixed pin are arranged on the same line as the fixed pin. One-motion comprising: an entry / exit operation member to be operated; a cam mechanism formed on an opposing surface of the fixing pin and the entry / exit operation member; and an extraction means that acts in a direction to extract the fixing pin from the engagement hole of the lower member. A fork fixing device of the type is provided. The cam mechanism includes an inclined surface formed on one of the opposing surfaces of the fixed pin and the in / out operation member, and a protrusion formed on the other and capable of contacting the inclined surface.

  In such a fork fixing device, when the in / out operation member is rotated (one motion), the fixing pin is pushed out via the cam mechanism, and the fixing pin is inserted into the engaging hole of the lower member. The fork slide is blocked. Further, when the input / output operation member is rotated in the reverse direction (one motion), the fixing pin is extracted from the engaging hole of the lower member via the extraction means, so that each fork is slidable. Therefore, it is possible to eliminate the time and labor required for the work of attaching / detaching each fork to / from the backrest or the work of adjusting the interval between the forks.

  However, the fork fixing device that prevents sliding of each fork by a rotating operation and makes each fork slidable by a rotating operation includes a fixing pin, an access operation member, a cam mechanism, and an extraction means. And a plurality of engaging holes formed in the lower member, the fixing pin and the access operation member are arranged on the same line on the fork, and the cam mechanism is opposed to the fixing pin and the input / output operation member. By being provided on the surface, it takes a lot of time to form complex parts and assemble the fork fixing device, which may increase the cost of the fork fixing device.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fork fixing device that can be attached and detached by a simple operation without requiring a tool, can easily adjust a fork interval, has a reduced number of parts, and can reduce the cost. .

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention includes a backrest that is lifted and lowered along a pair of left and right masts provided in a front portion of the vehicle, and a left-right direction along the backrest. A fork fixing device provided in a cargo handling device having a pair of forks to be slid to prevent the fork from sliding;
A plurality of engagement portions are formed on the backrest from the front along the longitudinal direction of the backrest, and when the forks are slid on the forks, the engagement portions of the backrest coincide with each other in order. A grip portion that forms a hole portion and has a pair of fixing pins that communicate with any of the engaging portions of the backrest and the hole portions of the forks, and holds the fixing pins detachably on the forks. Is provided.

  According to the above configuration, when the fixing pin is engaged with any of the engaging portions of the backrest through the hole of the fork, sliding of the fork is prevented, and in this state, when the fixing pin is gripped by the gripping portion. The fixing pin is fixed to the fork, and when the fixing pin is removed from the gripping portion, the fixing pin is made detachable from the fork, and the fixing pin is pulled out from any engagement portion of the backrest through the hole of the fork. Then, the fork is made slidable. Therefore, the displacement of each fork is prevented, the fixing pin is attached and detached with a simple operation without requiring a tool, and the distance between the forks is easily adjusted. Further, the fork fixing device includes a fixing pin and a grip portion, and is configured by forming a plurality of engaging portions in the backrest and forming a hole in each fork. Therefore, compared to the conventional one-motion type fork fixing device, the number of parts constituting the fork fixing device is small, each part is easily formed, and the effort required for assembling the fork fixing device is reduced. The cost for the apparatus is reduced.

  The invention according to claim 2 of the present invention is the invention according to claim 1, wherein the hole bracket is formed with a hole portion of each fork on the left and right inner sides of each fork. A rod part that penetrates through the hole of the fork from the front and engages with one of the engagement parts of the backrest, and one end of the rod part. The handle portion is provided at a right angle to the handle portion, and the handle portion of the fixing pin is detachably gripped by the grip portion.

  According to the above configuration, when the rod portion of the fixing pin is engaged with any of the engaging portions of the backrest through the hole portion of the fork, the fork slide is prevented, and the handle portion of the fixing pin is gripped in this state. When the gripping portion is gripped, the fixing pin is fixed to the fork, and when the handle portion of the fixing pin is removed from the gripping portion, the fixing pin is detachable from the fork, and the rod portion of the fixing pin is the hole portion of the fork. The fork is made slidable when it is pulled out from any of the engaging portions of the backrest. Therefore, the displacement of each fork is prevented, the fixing pin is attached and detached with a simple operation without requiring a tool, and the distance between the forks is easily adjusted. Furthermore, the fork fixing device includes a fixing pin having a simple structure including a rod part and a handle part, and a grip part, and a plurality of engaging parts are formed on the backrest, and the hole part is formed in each fork via a hole bracket. Formed and configured. Therefore, compared to the conventional one-motion type fork fixing device, the number of parts constituting the fork fixing device is small, each part is easily formed, and the effort required for assembling the fork fixing device is reduced. The cost for the apparatus is reduced.

  Further, the invention according to claim 3 of the present invention is the invention according to claim 2, wherein the gripping part is located above the hole part of the hole bracket at the left and right inner side parts of the fork. Or a fixed bracket provided below and provided at a position shifted forward of the hole bracket, and a gripping member provided on the fixed bracket and gripping the handle portion. Is.

  According to the above configuration, when the rod portion of the fixing pin is engaged with any of the engaging portions of the backrest through the hole portion of the fork, sliding of the fork is prevented, and in this state, the handle portion of the fixing pin is Is rotated by the gripping member provided on the fixing bracket of the gripping part, the fixing pin is fixed to the fork, and the handle part of the fixing pin is rotated to the other side. Then, the handle portion of the fixing pin is removed from the holding member provided on the fixing bracket of the holding portion, the fixing pin is made detachable from the fork, and the rod portion of the fixing pin passes through the hole portion of the fork and the backrest. When the fork is removed from any of the engaging portions, the fork is made slidable. Therefore, the displacement of each fork is prevented, the fixing pin is attached and detached with a simple operation without requiring a tool, and the distance between the forks is easily adjusted.

  The fork fixing device further includes a fixing pin having a simple configuration including a rod portion and a handle portion, and a gripping portion including a fixing bracket and a gripping member, and a plurality of engaging portions are formed on the backrest, and a hole portion of each fork. A hole is formed in the bracket. Therefore, compared to the conventional one-motion type fork fixing device, the number of parts constituting the fork fixing device is small, each part is easily formed, and the effort required for assembling the fork fixing device is reduced. The cost for the apparatus is reduced.

  The invention according to claim 4 of the present invention is the invention according to claim 2, wherein the handle portion is provided above or below the hole portion of the hole bracket. It is characterized by being formed from a gripping member to be gripped.

  According to the above configuration, when the rod portion of the fixing pin is engaged with any of the engaging portions of the backrest through the hole portion of the fork, sliding of the fork is prevented, and in this state, the handle portion of the fixing pin is If the handle portion of the fixed pin is gripped by the grip member of the grip portion, the fixed pin is fixed to the fork, and if the handle portion of the fixed pin is rotated to the other side, the fixed pin When the handle portion of the holding portion is removed from the holding member of the holding portion, the fixing pin is made detachable from the fork, and the rod portion of the fixing pin is pulled out from any engagement portion of the backrest through the hole portion of the fork, the fork Is made slidable. Therefore, the displacement of each fork is prevented, the fixing pin is attached and detached with a simple operation without requiring a tool, and the distance between the forks is easily adjusted.

  Further, the fork fixing device includes a fixing pin having a simple structure including a rod portion and a handle portion, and a hole bracket including a hole portion and a gripping member, and a plurality of engaging portions are formed on the backrest. Therefore, compared to the conventional one-motion type fork fixing device, the number of parts constituting the fork fixing device is small, each part is easily formed, and the effort required for assembling the fork fixing device is reduced. The cost for the apparatus is reduced.

  According to the present invention, when any of the engaging portions of the backrest is engaged with the fixing pin through the hole of the fork, the fork is prevented from sliding, and the fixing pin in this state is gripped by the gripping portion. By fixing the fixing pin to the fork, the displacement of each fork is prevented, the fixing pin can be attached and detached with a simple operation without requiring a tool, and the interval adjustment of each fork can be easily performed. The fork fixing device is provided with a fixing pin and a gripping part, and a plurality of engagement holes are formed in the backrest, and the holes are formed in each fork, thereby comparing with a conventional one-motion fork fixing device. Thus, the number of parts constituting the fork fixing device can be reduced, each part can be easily formed, and the effort required for assembling the fork fixing device can be reduced. It is possible to reduce the cost.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
As shown in FIG. 1, a forklift (an example of a cargo handling vehicle) 1 includes a vehicle 2 that can be moved forward, backward, left and right by operating each operation device (not shown) disposed in a cockpit. A mast device (loading device) 3 for transferring a load is provided at the front, and a fork fixing device 4 for preventing the fork 8 from sliding is provided on the mast device 3. Here, the traveling direction of the vehicle 2 is defined as the front-rear direction X, and the horizontal direction orthogonal to the front-rear direction X is defined as the left-right direction Y.

  As shown in FIG. 1, the mast device 3 includes a mast 7 including a pair of left and right fixed masts 5 provided at the front of the vehicle 2 and a pair of left and right movable masts 6 that can be moved up and down along the fixed mast 5. A carriage 9 that can be moved up and down along the movable mast 6, a backrest 10 that is lifted up and down together with the carriage 9, and is detachably hooked on the backrest 10 from above, and a lateral direction Y along the backrest 10. And a pair of left and right forks 8 to be slid.

  As shown in FIG. 2, a tilt cylinder 45 for tilting the mast 7 is provided between the vehicle 2 and the mast 7. The tilt cylinder 45 causes the mast 7 to be connected to a mast connecting shaft (see FIG. (Not shown) so as to be tiltable in the front-rear direction X. The mast 7 includes a lift cylinder 46 that moves the movable mast 6 up and down along the fixed mast 5. The carriage 9 includes left and right lift brackets (guide plates) 47 that are moved up and down along rails (not shown) formed on the movable mast 6 at the rear of the carriage 9.

  As shown in FIGS. 1 to 3, left and right lift chains 11 having one end fixed to each fixed mast 5 and the other end fixed to a lift bracket 47 through the upper part of the movable mast 6 are provided. When the movable mast 6 is lifted and lowered along the fixed mast 5 by 46, the lift brackets 47 are lifted and lowered by the lift chains 11 and the carriage 9 is lifted and lowered.

  The carriage 9 has a rotatable rotating frame 13 provided in front of the lift bracket 47 and a rotation driving device 14 for rotating the rotating frame 13. The rotating frame 13 is formed in a circular disk shape when viewed from the front, and an internal gear 15 is provided at the rear part thereof. The rotational drive device 14 has a hydraulic or electric drive motor, rotates a drive pinion 16 provided in the rotary frame 13, and causes the internal gear 15 provided in the rotary frame 13 by the drive pinion 16 to rotate. The rotary frame 13 is driven to rotate, and the rotary frame 13 is rotated about the axis in the front-rear direction X.

  The backrest 10 has rectangular upper and lower finger bars 19 and 20 provided in a pair of upper and lower at the front portion of the rotating frame 13. These upper and lower finger bars 19 and 20 are each formed in an appropriate length in the left-right direction Y, and protrude outward from the rotating frame 13. The upper finger bar 19 has a rail portion 21 formed in the upper portion along the left-right direction Y (longitudinal direction). The lower finger bar 20 has a rail portion 23 formed in the lower portion along the left-right direction Y (longitudinal direction) and a plurality of engagement holes (engagement) along the left-right direction Y (longitudinal direction) at the front portion. An example of the joint portion 24 is formed. Note that a large number of the engagement holes 24 are formed at appropriate intervals.

  Each of the forks 8 includes a base frame 8a in the vertical direction and a cargo handling frame 8b bent in the horizontal direction from the lower portion of the base frame 8a. On the rear surface of each base frame 8a, an upper hanging portion 27 is slidably engaged with the upper portion along the rail portion 21 of the upper finger bar 19, and a lower portion is slidable on the rail portion 23 of the lower finger bar 20. A lower hanging portion 28 to be engaged is formed.

  Further, each fork 8 is formed with a hole 31 that sequentially matches the engagement hole 24 of the lower finger bar 20 of the backrest 10 when each fork 8 is slid. Specifically, when the hole 31 is formed in a hole bracket 32 formed on the left and right inner sides of the base frame 8 a of each fork 8, and the fork 8 is slid in a state of being hung on the backrest 10. A hole bracket 32 is formed at a position where any one of the engagement holes 24 and the hole 31 is in order.

  As shown in FIGS. 4 and 5A, the fork fixing device 4 communicates with the hole 31 of the hole bracket 32 of each fork 8 and engages one of the lower finger bars 20 of the backrest 10. A pair of fixing pins 35 engaged with the portion 24 is provided. One end of each fixing pin 35 passes through the hole 31 of the hole bracket 32 of the fork 8 from the front, and is inserted (engaged) into one of the engagement holes 24 of the lower finger bar 20 of the backrest 10. A rod (an example of a rod portion) 36, a head 37 provided at the other end of the rod 36 and having a diameter larger than the diameter of the hole 31 of the hole bracket 32 of the fork 8, and the rod 36 in the vertical direction A handle (an example of a handle portion) 38 provided on the head 37 is formed.

  Each fork 8 is provided with a grip portion 40 for detachably holding the fixing pin 35. The grip portion 40 is formed at a position below the hole portion 31 of the hole bracket 32 on the left and right inner sides of the base frame 8a of each fork 8 and at a position shifted to the front of the hole bracket 32. Each holding part is formed of a bracket 41 and a substantially V-shaped elastic plate (an example of a holding member) 43 provided on the fixing bracket 41 via a screw 42 and holding the handle 38 of the fixing pin 35 in plan view. The handle 38 of each fixing pin 35 is detachably held by each fork 8 by 40.

  In the above configuration, the fork fixing device 4 is formed of a fixing pin 35 formed of a rod 36, a head 37, and a handle 38, a fixing bracket 41 including a screw 42 and an elastic plate 43, as shown in FIG. Each fork 8 has a grip portion 40, a hole bracket 32 of each fork 8 in which a hole portion 31 is formed, and a plurality of engagement holes 24 formed in the lower finger bar 20 of the backrest 10. .

The operation in the above embodiment will be described below.
When the rod 36 of the fixing pin 35 is inserted (engaged) into one of the engagement holes 24 of the backrest 10 through the hole 31 of the fork 8 as shown in FIG. When the slide of the fork 8 is blocked and the handle 38 of the fixed pin 35 is rotated downward in this state, the handle 38 of the fixed pin 35 is gripped by the elastic plate 43 of the grip portion 40, and the fixed pin 35 is moved to the fork. 8 is fixed. Therefore, even if the rotation drive device 14 is driven in this state, the rotation frame 13 is rotated, and the backrest 10 is rotated, each fork 8 is connected to the fork fixing device 4 as indicated by a virtual line in FIG. Thus, it is rotated together with the backrest 10 without shifting in the left-right direction Y with respect to the backrest 10.

  Further, as shown in the solid line of FIG. 3, FIG. 4 and FIG. 5A, when the handle 38 of the fixing pin 35 is rotated to the left and right from the state where the fixing pin 35 is fixed to the fork 8. The handle 38 of the fixing pin 35 is removed from the elastic plate 43 of the holding part 40, the fixing pin 35 is made detachable from the fork 8, and the rod 36 of the fixing pin 35 passes through the hole 31 of the fork 8 to When one of the engagement holes 24 is removed, the fork 8 is slidable. Therefore, for example, when adjusting the interval between the forks 8 in this state, the forks 8 are slid along the backrest 10.

  Further, as described above, only by rotating the handle 38 of the fixing pin 35, the fixing pin 35 can be freely attached to and detached from one of the engagement holes 24 of the backrest 10 through the hole 31 of the fork 8. 8 interval adjustment is facilitated.

  4 and 5A, the fork fixing device 4 includes a fixing pin 35 formed by a rod 36, a head 37, and a handle 38, a screw 42, an elastic plate 43, and a fixing bracket 41. And a hole bracket 32 of each fork 8 in which holes 31 are formed, and a plurality of engagement holes 24 are formed in the lower finger bar 20 of the backrest 10. .

  As described above, according to the embodiment of the present invention, when the rod 36 of the fixing pin 35 is inserted (engaged) into one of the engagement holes 24 of the backrest 10 through the hole 31 of the fork 8, In this state, when the handle 38 of the fixed pin 35 is rotated downward, the handle 38 of the fixed pin 35 is gripped by the elastic plate 43 of the grip portion 40, and the fixed pin 35 is moved to the fork 8. In this state, when the handle 38 of the fixing pin 35 is rotated to the left and right side, the handle 38 of the fixing pin 35 is removed from the elastic plate 43 of the grip portion 40, and the fixing pin 35 is moved to the fork. 8, when the rod 36 of the fixing pin 35 is pulled out from any of the engagement holes 24 of the backrest 10 through the hole 31 of the fork 8, the fork 8 is made slidable, so that each fork 8 shifts are prevented and tools are required Rukoto without allow installation and removal of the fixing pin 35 by a simple operation, the spacing adjustment of the forks can be easily performed.

  Further, according to the embodiment of the present invention, the fork fixing device 4 is formed of the fixing pin 35 formed by the rod 36, the head 37, and the handle 38, the screw 42, the elastic plate 43, and the fixing bracket 41. Gripping portion 40 and a hole bracket 32 in which a hole portion 31 is formed, and the number of parts is reduced compared to a conventional one-motion fork fixing device, and a plurality of engagements are provided. Since the joint hole 24 is formed on the lower finger bar 20 of the backrest 10, each part can be easily formed as compared with the conventional one-motion fork fixing device. Therefore, it is possible to reduce the time required for the fork fixing device 4 and to reduce the cost.

Further, according to the embodiment of the present invention, the fixing bracket 41 can prevent contact between the load placed on the fork 8 and the handle 38 of the fixing pin 35.
In the embodiment of the present invention, the fixing bracket 41 is located below the hole 31 of the hole bracket 32 on the left and right inner sides of the base frame 8a of each fork 8 and forward of the hole bracket 32. Although the fixed bracket 41 is formed at a position shifted to the upper side, the fixing bracket 41 is located above the hole portion 31 of the hole bracket 32 on the left and right inner sides of the base frame 8a of each fork 8 and the hole bracket 32. You may form in the position shifted | deviated ahead of.

  Further, in the embodiment of the present invention, as shown in FIG. 5A, the gripping portion 40 is below the hole portion 31 of the hole bracket 32 on the left and right inner sides of the base frame 8a of each fork 8. And a fixing bracket 41 formed at a position shifted forward of the hole bracket 32, and an elastic plate 43 provided on the fixing bracket 41 via a screw 42 and holding the handle 38 of the fixing pin 35. However, as shown in FIG. 5 (b), the mounting portion protrudes slightly forward (only the length from the rod 36 side of the head 37 to the rod 36 side of the handle 38) at the lower portion of the hole bracket 32. 32a is formed, and an elastic plate 43 is provided on the mounting portion 32a via a screw 42, and the rod 36 of the fixing pin 35 is inserted into one of the engagement holes 24 of the backrest 10 through the hole portion 31 of the fork 8 (engagement). In this state, rotate the handle 38 of the fixing pin 35 downward to fix the fixing pin 35. The handle 38 may be gripped by the elastic plate 43 of the hole bracket 32 '.

  According to this configuration, the fork fixing device 4 has the fixing pin 35 formed by the rod 36, the head 37, and the handle 38, and the gripping portion 40 ′ in which the elastic plate 43 is provided on the mounting portion 32a by the screw 42. A hole bracket 32 ′ having a hole 31 is provided, and the number of parts constituting the fork fixing device 4 can be reduced as compared with the conventional one-motion fork fixing device. Since a plurality of engagement holes 24 are formed in 20, each part can be formed with a simpler structure than the conventional one-motion fork fixing device. It is possible to reduce the time and effort required for the fork fixing device 4. The attachment portion 32a is formed below the hole bracket 32 ', and the elastic plate 43 is provided on the attachment portion 32a. However, the attachment portion 32a is formed above the hole bracket 32', and the attachment portion 32a An elastic plate 43 may be provided.

  Further, in the embodiment of the present invention, the forklift 1 includes a carriage 9 having a rotatable rotating frame 13 connected to the front of the lift bracket 47 and a rotation driving device 14 for rotating the rotating frame 13. 8 is configured to be rotated together with the rotating frame 13, but the forklift 1 may be configured to include such a rotating frame 13 and a carriage 9 that does not include the rotation driving device 14.

  In the embodiment of the present invention, the rail portion 23 is formed on the lower finger bar 20 of the backrest 10 and the lower hanging portion 28 is formed on each fork 8. However, the rail portion 23 and the lower hanging portion 28 are formed. The structure may not be formed.

  Further, in the embodiment of the present invention, a plurality of engagement holes 24 are formed in the front portion of the lower finger bar 20 along the left-right direction Y (longitudinal direction). Either a configuration that penetrates the bar 20 or a configuration that does not penetrate the lower finger bar 20 may be used.

It is a principal part perspective view of the forklift in the embodiment of the present invention. It is a side view of the mast apparatus of the forklift. It is a front view of the same mast apparatus. It is a principal part enlarged view of the same mast apparatus, (a) is a top view, (b) is a front view, (c) is a side view. It is a principal part expansion perspective view of a mast apparatus, (a) shows embodiment of this invention, (b) shows other embodiment of this invention.

Explanation of symbols

X longitudinal direction
Y Left / Right direction
1 Forklift
2 Vehicle
3 Mast equipment
4 Fork fixing device
7 Mast
8 Forks
9 Carriage
10 Backrest
19 Upper finger bar
20 Lower finger bar
31 hole
32, 32 'hole bracket
35 Fixing pin
36 rods
38 Handle
40, 40´ gripping part
41 Fixing bracket
42 screws
43 Elastic plate

Claims (4)

Provided in a cargo handling apparatus having a backrest that is raised and lowered along a pair of left and right masts provided at the front of the vehicle, and a pair of forks that slide in the left and right direction along the backrest. A fork-fixing device for blocking,
In the backrest, a plurality of engaging portions are formed from the front along the longitudinal direction of the backrest,
In each fork, when each fork is slid, a hole that sequentially matches the engagement portion of the backrest is formed,
A pair of fixing pins that communicate with any of the engagement portions of the backrest and the holes of the forks;
A fork fixing device, wherein each fork is provided with a grip part for detachably holding the fixing pin. Provided on each side of the left and right inner sides of each fork is a hole bracket formed with a hole of each fork,
The fixing pin,
A rod portion that penetrates the hole of the fork from the front and is engaged with any of the engagement portions of the backrest;
Consists of a handle part provided at one end of the rod part in a direction perpendicular to the rod part,
The fork fixing device according to claim 1, wherein the handle portion of the fixing pin is detachably gripped by the grip portion. The gripping part;
A fixing bracket provided on the left and right inner sides of the fork above or below the hole of the hole bracket, and at a position shifted to the front of the hole bracket;
The fork fixing device according to claim 2, wherein the fork fixing device is provided with a holding member that is provided on the fixing bracket and holds the handle portion. 3. The fork fixing device according to claim 2, wherein the gripping portion is configured by a gripping member that is provided above or below the hole portion of the hole bracket and grips the handle portion.

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