JP4120944B2 - Carriage for transportation - Google Patents

Description

  The present invention relates to a low-floor type transporting carriage that is pivotally supported so that a wheel rolling on a guide rail enters the carriage main body and a part of the wheel enters a thickness region of the carriage main body.

In order to make the transport carriage low-floor type, the transport carriage that pivotally supports the wheel rolling on the guide rail in the carriage main body, and a part of the wheel enters the thickness area of the carriage main body, For example, it is known from Patent Document 1.
JP-A-5-170327

  However, as is clear from the configuration described in Patent Document 1, the conventional wheel support structure for a low-floor type transporting carriage of this type simply has a part of the wheel entering the thickness region of the carriage body. When the wheel condition, for example, the wear condition of the peripheral surface, etc. is easily inspected from the upper side of the main body of the carriage, or when it is necessary to replace or repair the wheel as a result of this inspection. No idea has been made to allow the wheel to be removed from the upper side of the cart body.

An object of the present invention is to provide a transport carriage capable of solving the conventional problems as described above, and its means is shown with reference numerals in the embodiments described later. 6a, 6b is a transporting carriage in which wheels 17 rolling on the carriage body 3 are pivotally supported on the carriage body 3, and the carriage body 3 includes a bottom plate portion 26 having an opening 26a in which the wheels 17 are loosely fitted; An openable / closable floor plate portion 35 that can open and close the upper side of the wheel 17 is provided, and an opening provided in the wheel support plate 21 is provided in a wheel support plate 21 that is detachably mounted on the bottom plate portion 26. The wheel 17 is pivotally supported in a state of vertically passing through the portion 21a and the opening 26a of the bottom plate portion 26, and by opening the floor plate portion 35, the wheel support plate 21 pivotally supporting the wheel 17 is provided. It is configured so that it can be pulled out above the cart body 3 Those were.

  As for the implementation of the present invention having the above-described configuration, specifically, as described in claim 2, the carriage main body 3 includes a horizontal framework structure 12 and a floor plate 13 laid on the upper side thereof. The horizontal frame structure 12 is provided with a rectangular frame portion 20 that surrounds the wheel 17 in a plan view, and the floor plate portion 35 and the bottom plate portion 26 that can be opened and closed are disposed above and below the rectangular frame portion 20. Can do. In this case, as described in claim 3, the openable / closable floor plate portion 35 is fitted and supported inside the rectangular frame portion 20 so as to be flush with the upper surface of the cart body 3. The flexible floor material 14 laid on the upper surface is cut along three sides of the floor plate portion 35, and the floor material portion 14 a surrounded by the cut 37 is fixed to the floor plate portion 35. The floor plate portion 35 can be configured as an opening / closing hinge.

  Further, as described in claim 4, a vertical axis roller 18 for positioning that sandwiches the guide rail 6 a in addition to the wheel 17 is supported on the wheel support plate 21, or as in claim 5. Further, a scraper 19 for cleaning the upper surfaces of the guide rails 6a and 6b can be attached.

  Further, as described in claim 6, auxiliary members 38 and 39 covering at least two opposing positions around the wheel support plate 21 placed and fixed on the bottom plate portion 26 are attached to and detached from the bottom plate portion 26. Can be attached freely.

  According to the present invention having the above-described configuration, it is possible to obtain a low-floor type transport cart that is pivotally supported so that a part of the wheel enters the thickness region of the cart body. According to the above, since the peripheral surface of the wheel can be directly viewed from the upper side of the cart body by opening (including removing) an openable / closable floor plate portion provided on the upper side of the wheel, the degree of wear of the wheel Inspections can be performed very easily. Moreover, even when the wheel needs to be replaced or repaired, the wheel support plate and the bottom plate portion are disconnected in the vertical direction with the openable floor plate portion opened, and the wheel support plate together with the wheel pivotally supported by the wheel support plate. It can be removed by pulling it up above the cart body. That is, all maintenance operations such as wheel inspection, replacement, and repair can be easily and easily performed from the upper side of the carriage body.

  In addition, according to the structure of Claim 2, by making the horizontal frame structure as a housing which supports the floor board of a trolley | bogie main body have a rectangular frame part of minimum necessary size for every wheel, The size of the floor plate portion that can be freely opened and closed provided on the upper side and the size of the bottom plate portion that supports the wheel support plate can be reduced to the minimum, the floor plate portion can be easily opened and closed, and the rectangular frame portion that exists for each wheel The bottom plate portion can also be used to increase the strength of the horizontal frame structure, and thus the main body of the carriage.

  Moreover, according to the structure of Claim 3, although the surface of a trolley | bogie main body can be comprised flat, the workability | operativity on a trolley | bogie main body can be improved with the floor material which covers the surface of the said trolley | bogie main body. Because it is not necessary to peel off the floor material for the maintenance work of the wheel, the floor plate portion can be opened at the same time by opening the floor material portion integrated with the openable floor plate portion on the upper side of the wheel. The wheel maintenance work from the upper side of the cart body can be easily and efficiently performed while the surface of the cart body is covered with the flooring. In addition, since the floor material also serves as the hinge of the floor plate portion that can be freely opened and closed, the cost can be reduced as compared with the case of using a dedicated hinge that pivotally attaches the floor plate portion so as to be freely opened and closed.

  Moreover, according to the structure of Claim 4, the positioning vertical-axis roller which pinches | interposes a guide rail with the said wheel can also be attached or detached integrally, According to the structure of Claim 5, according to the said wheel, a guide rail Since the scraper that cleans the upper surface can also be attached and detached integrally, the vertical shaft roller for positioning and the scraper do not adversely affect the attaching and detaching operation of the wheel, and the vertical axis roller for positioning Maintenance work on the scraper can also be done easily and easily from the top side of the carriage body.

  According to the present invention, since the wheel support plate is detachably mounted on the bottom plate portion, the connection between the bottom plate portion and the wheel support plate is performed by a vertical coupler such as a boltle nut. Will be done. If this vertical coupler breaks, or if the engagement of the coupler is loosened due to vibration or the like, the cart body is lowered relative to the wheels by gravity including the load applied to the cart body. As a result, there is a risk of a major accident such as the truck body tilting and cargo collapse. Then, if the structure of Claim 6 is employ | adopted, even if the situation where coupling tools, such as a bolt nut which couple | bonds a baseplate part and a wheel support plate as mentioned above fracture | rupture or loosen, will arise. The pair of auxiliary members mounted on the bottom plate part can prevent the wheel support plate from moving upward relative to the part and prevent the collapse of the load caused by the undue inclination of the cart body as described above. Can improve safety.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 denotes a carriage for carriage, and a carriage main body 3 having a load support base 2 that can be raised and lowered at the center. The vehicle body 3 includes a pair of left and right wheel units 4a to 5b provided on the vehicle body 3 at two locations before and after the load support table 2, and the vehicle body 3 is laid along the travel path via the wheel units 4a to 5b. It is supported by the pair of left and right guide rails 6a and 6b and can travel along the guide rails 6a and 6b. As the propulsion means of the transport carriage 1 in this embodiment, the friction drive wheel 9 that is pressed against one side surface 7a parallel to the traveling direction of the carriage body 3 and is driven by the motor 8, and the friction drive wheel 9 are: Friction driving means 11 comprising a backup roller 10 in contact with the other side surface 7b parallel to the traveling direction of the carriage main body 3 at a position opposite to the left and right is used.

  The cart body 3 includes a horizontal frame structure 12, a floor plate 13 laid on the horizontal frame structure 12, and a flexible anti-slip floor material 14 stretched on the floor plate 13 with an adhesive or the like. . The horizontal framework structure 12 is configured by welding a plurality of types of thickness square pipe members 15 in the front-rear direction and the left-right direction to each other in a lattice shape, and the floor plate 13 is surrounded by the square pipe members 15. Each rectangular frame portion is divided and fitted inside the rectangular frame portion so as to be flush with the surface of the horizontal frame structure 12 (the upper surface of the square pipe member 15). Accordingly, floor board support members 16 that support the periphery and middle part of each divided floor board 13 are disposed in the inner periphery of the rectangular frame part surrounded by the square pipe member 15 and in an appropriate middle part. Moreover, each floor board 13 can be fixed to the floor board support member 16 with bolts or the like as necessary.

  Among the wheel units 4a to 5b, the wheel units 4a and 5a located on the left and right sides in the traveling direction are, as shown in FIGS. 3 to 5, a wheel 17 that rolls on the guide rail 6a and the wheel 17. A pair of left and right positioning vertical axis rollers 18 sandwiching the guide rail 6a from both the left and right sides at positions adjacent to the front and rear sides of the guide, and a scraper 19 for cleaning the upper surface of the guide rail 6a at a position further outside the positioning vertical axis rollers 18 It has. Moreover, although the figure which shows a detail is abbreviate | omitted, since the wheel unit 4b, 5b located in the right-and-left other side of a running direction removes the positioning vertical axis roller 18 from the said wheel unit 4a, 5a, Below, the structure of each wheel unit 4a-5b is demonstrated taking the wheel unit 4a shown in FIGS. 3-5 as an example.

  As described above, the horizontal frame structure 12 of the carriage main body 3 is formed with a large number of rectangular frame parts, but at the place where the wheel units 4a to 5b of the horizontal frame structure 12 are arranged, As shown in FIG. 1, the rectangular pipe member 15 includes a rectangular frame portion 20 that surrounds the wheel 17 in a plan view and has a smaller planar size than other rectangular frame portions.

  As shown in FIGS. 3 to 6, the wheel unit 4a includes a pair of left and right vertical groove members (bearing members) 22 on the lower side of a wheel support plate 21 having a rectangular opening 21a in the center, and a bottom plate thereof. And a flat U-shaped scraper support plate 23 fixed to the lower end portions of both channel members 22 so as to be parallel to the wheel support plate 21, The wheel 17 is positioned between the pair of left and right groove members 22 such that the upper part protrudes upward from the opening 21a of the wheel support plate 21 and the lower periphery of the wheel 17 protrudes downward from the notch recess 23a of the scraper support plate 23. Is supported by a horizontal support shaft 24. The pair of left and right positioning vertical axis rollers 18 are supported by vertical support shafts 25 below the left and right sides of the scraper support plate 23, and the scraper 19 is mounted on the tip of the scraper support plate 23 with a mounting plate 19 a. Is attached through.

  On the other hand, the rectangular frame portion 20 of the horizontal frame structure 12 is of a size that allows the wheel support plate 21 to be loosely inserted therein, and a horizontal plate material is fixed to the bottom side of the inner frame by welding. A portion 26 is formed, and the bottom plate portion 26 is provided with a rectangular opening 26a at the center thereof. The opening portion 26a of the bottom plate portion 26 can pass the portion protruding downward from the wheel support plate 21 of the wheel unit 4a from above to below by making the wheel support plate 21 diagonal, etc. The size is smaller than the wheel support plate 21. Thus, the portion protruding downward from the wheel support plate 21 of the wheel unit 4a is passed through the rectangular frame portion 20 below the opening 26a of the bottom plate portion 26, and the front and rear end portions of the wheel support plate 21 are passed through. In a state of being placed on the bottom plate portion 26, both front and rear end portions of the wheel support plate 21 are detachably fixed to the bottom plate portion 26 by a pair of left and right bolts 27 and 28, respectively.

  It should be noted that on both front and rear end portions of the wheel support plate 21, a belt-shaped washer 29 for preventing rotation of the bolt common to a pair of left and right bolts, which can be bent and raised so as to contact the side surfaces of the heads of the bolts 27 and 28. , 30 are attached in advance by one rivet 31, 32, respectively. Further, shim plates 33 and 34 can be interposed between the front and rear end portions of the wheel support plate 21 and the bottom plate portion 26 as shown in the drawing as needed. The shim plates 33 and 34 can be fixed and integrated in advance on the surface side of the bottom plate portion 26 or on the bottom surface sides of both front and rear ends of the wheel support plate 21.

  As described above, in the wheel unit 4 a attached in the rectangular frame portion 20 of the horizontal frame structure 12, the substantially lower half portion of the wheel 17 protrudes below the bottom surface level of the carriage body 3. Thus, the upper periphery of the wheel 17 protrudes upward from the wheel support plate 21 as described above, but does not protrude upward from the rectangular frame portion 20 and is divided in accordance with the rectangular frame portion 20. A space for fitting the floor plate portion 35 formed of the floor plate 13 into the rectangular frame portion 20 is secured on the upper side of the wheel 17. The floor plate portion 35 is supported on both left and right sides by a grooved floor plate support material 16 fixed on the bottom plate portion 26 with bolts 36 on both the left and right sides in the rectangular frame portion 20. On the other hand, as shown in FIG. 1, the floor material 14 stretched on the floor board 13 has cuts 37 along the three sides of each floor board portion 35 arranged on the wheel units 4a to 5b. The floor material portion 14a, which is inserted and surrounded by the notches 37, is fixed to the surface of the floor plate portion 35 with an adhesive or the like, thereby serving as a fulcrum when the floor plate portion 35 is opened and closed as shown in FIG. 3B. A hinge is constituted by the flooring 14.

  As shown in FIGS. 3 and 4, the pair of auxiliary members 38 and 39 are provided side by side with respect to the wheel unit 4 a attached in the rectangular frame portion 20 as described above. These auxiliary members 38 and 39 are mounted horizontally on the front and rear end portions of the wheel support plate 21 at the intermediate position between the two bolts 27 and 28 after the wheel support plate 21 is mounted on the bottom plate portion 26 with bolts 27 and 28. The projecting plate portions 38a and 39a are detachably attached to the bottom plate portion 26 with bolts 40 and 41 so as to cover the projecting plate portions 38a and 39a. The pair of auxiliary members 38 and 39 are used for preventing the bolts 27 and 28 from being broken due to overloading the carriage body 3 and deterioration of the bolts 27 and 28 to which the wheel support plate 21 is attached, or for preventing the bolts from rotating. When the belt-like washers 29 and 30 are not used together, the bolts 27 and 28 are loosened due to vibration or the like, so that when the wheel support plate 21 is moved relative to the bottom plate portion 26, both front and rear ends of the wheel support plate 21 are used. The horizontal overhanging plate portions 38a and 39a prevent the portion from rising above a certain level to ensure safety.

  As described above, the wheel units 4a to 5b attached in the respective rectangular frame portions 20 of the cart body 3 are transported because the lower half portion of the wheels 17 only projects downward from the bottom surface level of the cart body. This is useful for making the trolley 1 have a low floor structure. And by opening the floor board part 35 which closes the rectangular frame part 20 which comprises each wheel unit 4a-5b at a trolley | bogie floor surface level as shown by a virtual line in FIG. 3, it is upward from the opening part 21a of the wheel support board 21. The peripheral surface of the wheel 17 protruding to the right can be directly visually observed, and the degree of wear of the peripheral surface of the wheel 17 can be easily grasped. Furthermore, when it is necessary to check, repair, or replace the wheel 17 or the scraper 19 at hand, or to check, repair, or replace the positioning vertical axis roller 18 in the case of the wheel units 4a and 5a, the auxiliary member 38 is used. , 39 with the bolts 27 and 28 removed, the wheel support plate 21 can be removed from the bottom plate portion 26 and pulled upward from the rectangular frame portion 20. The wheel units 4a to 5b after inspection / repair / replacement can be easily attached from the upper side of the carriage main body 3 in the reverse order of the removal.

  In addition, the floor board part 35 which closes each rectangular frame part 20 at the level of the floor board 13 may be fitted into the rectangular frame part 20 so as to be freely liftable, or on one side of the rectangular frame part 20 using a hinge. It may be pivoted so that it can be opened and closed. Of course, the flooring 14 is not essential to the present invention.

It is a top view of the trolley | bogie for conveyance in the state which notched the floor material partially. FIG. A is a side view of the transport carriage, and FIG. B is a rear view of the transport carriage. Fig. A is a longitudinal side view at one wheel unit position, and Fig. B is a longitudinal rear view at the wheel unit position. It is a top view in the state where a floor board in one wheel unit position was omitted. It is a decomposition | disassembly partial vertical side view in one wheel unit position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Carriage for conveyance 2 Cargo support base 3 Carriage body 4a-5b Wheel unit 6a, 6b Guide rail 11 Friction drive means 12 Horizontal frame structure 13 Floor board 14 Non-slip floor material 15 Square pipe material 16 Floor board support material 17 Wheel 18 Positioning Vertical shaft roller 19 Scraper 20 Rectangular frame portion 21 for each wheel unit Wheel support plate 21a Opening portion 22 of wheel support plate Groove (bearing member)
23 Scraper support plate 23a Notch recess 26 of the scraper support plate Bottom plate portion 26a Opening portions 29, 30 of the bottom plate portion Belt washers 33, 34 for bolt rotation prevention Shim plate 35 Floor plate portion (floor plate 13)
37 Cutting of flooring 38, 39 Auxiliary member

Claims (6)

A transport trolley wheels rolling on guide rails are pivotally supported by the carriage the body, the carriage body includes a bottom plate portion having an opening in which the wheel is loosely fitted, the upper side of the wheel An openable and closable floor plate portion is provided, and a wheel support plate detachably mounted on the bottom plate portion is provided with an opening provided on the wheel support plate and an opening portion of the bottom plate portion being vertically moved. The carriage is configured such that the wheel is pivotally supported in a state of penetrating through the wheel, and the wheel support plate supporting the wheel can be pulled out above the carriage body by opening the floor plate portion.   The cart body includes a horizontal frame structure and a floor plate laid on the horizontal frame structure, and the horizontal frame structure is provided with a rectangular frame portion that surrounds the wheel in plan view, and the rectangular frame portion is provided above and below the rectangular frame portion. The carriage for transportation according to claim 1, wherein a floor plate portion that can be freely opened and closed and the bottom plate portion are disposed.   The openable and closable floor plate portion is fitted and supported inside the rectangular frame portion so as to be flush with the upper surface of the cart body, and a flexible floor material laid on the upper surface of the cart body is the floor plate portion. 3. The transport carriage according to claim 2, wherein a floor material portion surrounded by the cuts is fixed to the floor plate portion to constitute an opening / closing hinge for the floor plate portion. .   The transporting carriage according to any one of claims 1 to 3, wherein a vertical axis roller for positioning that sandwiches the guide rail is supported on the wheel support plate in addition to the wheel.   The transport carriage according to claim 1, wherein a scraper for cleaning the upper surface of the guide rail is attached to the wheel support plate in addition to the wheel.   The auxiliary member which covers at least two opposing positions around the wheel support plate placed and fixed on the bottom plate portion is detachably attached to the bottom plate portion. Trolley for transportation.