CN214021661U - Marking off fat liquoring integrated device - Google Patents

Abstract

The utility model provides a marking off integrative device of fat liquoring, relates to prefabricated component and makes technical field, including the frame, bear frame, fat liquoring subassembly and marking off the subassembly, is provided with the walking track in the frame, bears the activity setting of frame on the walking track to can follow the orbital motion of walking, fat liquoring subassembly and marking off the equal activity of subassembly and set up on bearing the frame, the fat liquoring subassembly is used for carrying out the fat liquoring to the mould under the drive that bears the frame, the marking off subassembly is used for marking off on the mould under the drive that bears the frame. The oil coating assembly and the scribing assembly are integrated into a whole through the bearing frame, so that scribing and oil coating processes can be performed simultaneously, scribing and oil coating are integrated, single-station operation is adopted, the working efficiency is greatly improved, the occupied area is small, and the field is saved.

Description

Marking off fat liquoring integrated device

Technical Field

The utility model relates to a prefabricated component makes technical field, particularly, relates to an integrative device of marking off fat liquoring.

Background

A scribing machine is an important equipment of a PC (prefabricated parts) production line. The scribing machine finishes scribing on a die, so that the die is distributed and small pieces can be arranged according to the scribed lines, the efficiency is high, the oiling equipment is used for finishing smearing of the oiling release agent on the die, the better demolding of the component is realized, and the inventor researches show that the prior art does not have a process for simultaneously realizing scribing and oiling, the scribing and the oiling are usually realized by adopting different equipment, the occupied area is large, and the working efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an integrative device of marking off fat liquoring, it can be simultaneously marked off line and fat liquoring technology, realizes marking off and fat liquoring integrative, adopts the simplex position operation, has improved work efficiency greatly, and area is little, has practiced thrift the place.

The embodiment of the utility model is realized like this:

in a first aspect, the embodiment of the utility model provides an integrative device of marking off fat liquoring, include the frame, bear frame, fat liquoring subassembly and marking off the subassembly, be provided with the walking track in the frame, the activity that bears the frame sets up on the walking track, and can follow walking orbital motion, fat liquoring subassembly with the equal activity of marking off subassembly sets up bear on the frame, the fat liquoring subassembly is used for bear the frame carry out the fat liquoring to the mould under the drive, the marking off subassembly is used for bear the drive of frame down marking off on the mould.

In an optional implementation manner, an adjusting track is arranged on the bearing frame, the extending direction of the adjusting track is perpendicular to the extending direction of the walking track, the oiling component is movably arranged on the adjusting track and can move along the adjusting track, and the scribing component is connected with the oiling component and moves relative to the bearing frame under the driving of the oiling component.

In optional embodiment, the fat liquoring subassembly includes mounting panel, first driving piece, scribbles oil seat and scribbles oil brush head, the mounting panel slides and sets up adjust on the track, first driving piece sets up on the mounting panel for drive the mounting panel is followed adjust orbital motion, scribble oil seat with the mounting panel is connected, it sets up to scribble oil brush head scribble oil seat's bottom, the marking off subassembly with scribble oil seat and connect.

In an optional embodiment, a first rack is disposed on the adjustment track, an extending direction of the first rack is parallel to an extending direction of the adjustment track, and a first gear is disposed on an output shaft of the first driving member and engaged with the first rack.

In an optional embodiment, the oil coating assembly further comprises a second driving piece, a transmission piece is arranged on the oil coating seat, the second driving piece is arranged on the mounting plate, the transmission piece is movably arranged on the mounting plate, and the second driving piece is in transmission connection with the transmission piece and used for lifting or lowering the oil coating seat.

In an optional embodiment, a second rack is disposed on the transmission member, an extending direction of the second rack is perpendicular to an extending direction of the adjustment track, a second gear is disposed on an output shaft of the second driving member, and the second gear is engaged with the second rack.

In an alternative embodiment, the scribing assembly comprises a scribing support and a scribing rod, the scribing support is connected with the top of the oiling seat, the scribing rod is arranged on the scribing support and extends downwards to be flush with the bottom of the oiling seat, and the extending direction of the scribing rod is perpendicular to the extending direction of the adjusting track.

In an alternative embodiment, the carriage is provided with a first displacement track and a second displacement track, the oiling assembly is movably arranged on the first displacement track and can move along the first displacement track, and the scribing assembly is movably arranged on the second displacement track and can move along the second displacement track.

In an optional embodiment, the bearing frame comprises a first cross beam and a second cross beam which are arranged at intervals, the first cross beam and the second cross beam are movably arranged on the walking track, the first displacement track is arranged on the first cross beam, and the second displacement track is arranged on the second cross beam.

In an optional implementation mode, the frame includes relative first walking frame and the second walking frame that sets up, first walking frame with all be provided with the walking track on the second walking frame, the both ends that bear the frame are the activity respectively and are set up two on the walking track, just still be provided with the walking driving piece on bearing the frame, the walking driving piece is used for driving bear the frame and follow the motion of walking track.

The utility model discloses beneficial effect includes:

the utility model provides an integrative device of marking off fat liquoring is integrated as an organic whole with fat liquoring subassembly and marking off subassembly through bearing the frame to can rule out simultaneously and fat liquoring technology, realize marking off and fat liquoring integrative, adopt the simplex position operation, improve work efficiency greatly, area is little, has practiced thrift the place.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a scribing and oiling integrated device according to a first embodiment of the present invention at a first viewing angle;

FIG. 2 is an enlarged partial view of II in FIG. 1;

fig. 3 is a schematic structural view of the scribing and oiling integrated device according to the first embodiment of the present invention at a second viewing angle;

fig. 4 is a schematic structural view of a scribing and oiling integrated device according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a scribing and oiling integrated device according to a third embodiment of the present invention.

Icon:

100-a scribing and oiling integrated device; 110-a rack; 110 a-a running track; 111-a first walking frame; 113-a second walking frame; 115-cross frame; 117 — a travel drive; 130-a carrier; 130 a-adjusting the track; 131 a-a first rack; 130 b-a first displacement track; 130 c-a second shift track; 131-a first beam; 133-a second beam; 150-an oiling component; 151-mounting plate; 153-a first drive member; 153 a-first gear; 155-oiling seat; 157-oiling brush head; 158-a transmission member; 158 a-a second rack; 159 — a second driver; 159 a-second gear; 170-a scribe assembly; 171-scribe line holder; 173-a line marking bar; 200-mould.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As disclosed in the background art, PC production lines in the prior art generally require a scribing machine to scribe the lines to facilitate the distribution of the molds, and meanwhile, oiling equipment can be used to coat an oily mold release agent on the molds to facilitate the better demolding of the molded members. In the prior art, the scribing step and the oiling step are usually performed separately, namely, the scribing step and the oiling step are realized by different devices, so that the occupied area of the devices is large, and the work efficiency is low due to the fact that the scribing step and the oiling step are performed separately.

In order to solve the problem, the utility model provides an integrative device of marking off fat liquoring can realize marking off and fat liquoring an organic whole, what need explain, under the condition of conflict not, the embodiment of the utility model provides a characteristic can the inter combination.

First embodiment

Referring to fig. 1 to 3, the embodiment provides a scribing and oiling integrated device 100, which can perform scribing and oiling processes simultaneously, so as to realize integration of scribing and oiling, and adopts single-station operation, thereby greatly improving the working efficiency, occupying small area and saving the field.

The scribing and oiling integrated device 100 provided by the embodiment comprises a rack 110, a bearing frame 130, an oiling component 150 and a scribing component 170, wherein a walking track 110a is arranged on the rack 110, the bearing frame 130 is movably arranged on the walking track 110a and can move along the walking track 110a, the oiling component 150 and the scribing component 170 are movably arranged on the bearing frame 130, the oiling component 150 is used for oiling a die 200 under the driving of the bearing frame 130, and the scribing component 170 is used for scribing on the die 200 under the driving of the bearing frame 130.

In this embodiment, the carriage 130 is disposed above the mold 200, so as to move the oiling assembly 150 and the scribing assembly 170 above the mold 200, thereby performing scribing and oiling actions on the mold 200.

The frame 110 includes a first walking frame 111 and a second walking frame 113 which are oppositely disposed, the first walking frame 111 and the second walking frame 113 are both provided with walking rails 110a, two ends of the bearing frame 130 are respectively movably disposed on the two walking rails 110a, and the bearing frame 130 is further provided with a walking driving member 117, and the walking driving member 117 is used for driving the bearing frame 130 to move along the walking rails 110 a. Specifically, the first traveling frame 111 and the second traveling frame 113 are connected to each other by two cross frames 115 to form a rectangular frame structure, and the traveling driving member 117 is a driving motor capable of driving the carriage 130 to move along the traveling rail 110a, so as to drive the scribing assembly 170 and the oiling assembly 150 to different positions.

In this embodiment, the carriage 130 is provided with an adjusting rail 130a, an extending direction of the adjusting rail 130a is perpendicular to an extending direction of the traveling rail 110a, the oiling assembly 150 is movably disposed on the adjusting rail 130a and can move along the adjusting rail 130a, and the scribing assembly 170 is connected to the oiling assembly 150 and moves relative to the carriage 130 under the driving of the oiling assembly 150.

In the present embodiment, the extending direction of the adjustment rail 130a is perpendicular to the extending direction of the traveling rail 110 a. Specifically, a rectangular coordinate system is established on the rack 110, the traveling rail 110a is arranged along the X-axis direction, the adjusting rail 130a is arranged along the Y-axis direction, the position of the bearing frame 130 along the traveling rail 110a is adjusted, so that the scribing assembly 170 and the oil coating assembly 150 move along the X-axis direction, and the position of the oil coating assembly 150 and the scribing assembly 170 along the adjusting rail 130a is adjusted, so that the oil coating assembly 150 and the scribing assembly 170 move along the Y-axis direction, and therefore, the oil coating and scribing actions can be realized by the oil coating assembly 150 and the scribing assembly 170 at any position on the surface of the die 200.

The oiling assembly 150 comprises a mounting plate 151, a first driving member 153, an oiling seat 155 and an oiling brush head 157, wherein the mounting plate 151 is arranged on the adjusting track 130a in a sliding mode, the first driving member 153 is arranged on the mounting plate 151 and used for driving the mounting plate 151 to move along the adjusting track 130a, the oiling seat 155 is connected with the mounting plate 151, the oiling brush head 157 is arranged at the bottom of the oiling seat 155, and the scribing assembly 170 is connected with the oiling seat 155.

In this embodiment, an oil box for loading an oily release agent is arranged in the oiling seat 155, and the oil box has an oil port connected with the oiling brush head 157, so that the oily release agent in the oil box is coated on the oiling brush head 157, and then coated on the surface of the mold 200 by the oiling brush head 157. Specifically, the oiling brush head 157 is a rotating brush head, and the smearing is realized in a rotating mode.

In this embodiment, the adjusting track 130a is provided with a first rack 131a, an extending direction of the first rack 131a is parallel to the extending direction of the adjusting track 130a, an output shaft of the first driving member 153 is provided with a first gear 153a, and the first gear 153a is engaged with the first rack 131 a. Specifically, the first driving member 153 is a driving motor, a housing of the driving motor is fixed on the mounting plate 151, the first rack 131a is fixedly disposed on the inner side of the adjusting rail 130a, the first gear 153a extends into the inner side of the adjusting rail 130a from the mounting plate 151 and is engaged with the first rack 131a, and under the driving action of the first driving member 153, the first gear 153a rotates to drive the mounting plate 151 to move along the adjusting rail 130a and drive the oiling assembly 150 and the scribing assembly 170 to move along the Y-axis direction.

It should be noted that in this embodiment, the mounting plate 151 is slidably disposed on the adjustment track 130a, and the limit is implemented by the limit slider and the adjustment track 130a, so as to prevent the mounting plate 151 from coming off from the adjustment track 130 a.

Further, the oiling assembly 150 further comprises a second driving member 159, the oiling base 155 is provided with a transmission member 158, the second driving member 159 is arranged on the mounting plate 151, the transmission member 158 is movably arranged on the mounting plate 151, and the second driving member 159 is in transmission connection with the transmission member 158 and used for lifting or lowering the oiling base 155. Specifically, a limiting sliding groove is formed in the mounting plate 151, the transmission member 158 is slidably disposed in the limiting sliding groove and driven by the second driving member 159 to move downward, so that the lower oiling brush head 157 abuts against the surface of the mold 200 to achieve smearing, or driven by the second driving member 159 to move upward, so that the oiling brush head 157 is separated from the surface of the mold 200 after smearing is completed.

In this embodiment, the transmission member 158 is provided with a second rack 158a, the extending direction of the second rack 158a is perpendicular to the extending direction of the adjusting track 130a, the output shaft of the second driving member 159 is provided with a second gear 159a, and the second gear 159a is meshed with the second rack 158 a. Specifically, the transmission member 158 is plate-shaped, and a second rack 158a is disposed at an edge of one side, the second rack 158a is disposed along a vertical direction, the second driving member 159 is a driving motor and is fixed on the mounting plate 151, and the second gear 159a is disposed on an output shaft of the second driving member 159, so that the transmission member 158 moves up and down by cooperation of the rack and pinion, and the lower oiling seat 155 and the oiling brush head 157 are driven to move up and down.

The scribing assembly 170 includes a scribing bracket 171 and a scribing bar 173, the scribing bracket 171 is connected to the top of the oiling seat 155, the scribing bar 173 is disposed on the scribing bracket 171 and extends downward to be flush with the bottom of the oiling seat 155, and the scribing bar 173 extends in a direction perpendicular to the extension direction of the adjustment rail 130 a. Specifically, the scribing supporter 171 is fixed to the top side of the oiling seat 155 by screws and protrudes outward toward one side of the oiling seat 155, and the scribing rod 173 is disposed at one end of the scribing supporter 171 protruding out of the oiling seat 155 and protrudes downward, so that when the oiling seat 155 is close to the surface of the mold 200, the scribing rod 173 can contact the surface of the mold 200, thereby performing a scribing function.

In other preferred embodiments of the present invention, the scribing rod 173 may also be a telescopic rod, when the oil coating seat 155 is close to the surface of the mold 200, the scribing rod 173 extends and fully contacts the surface of the mold 200, so as to simultaneously realize the scribing and oil coating actions, and when the scribing is not required, the scribing rod 173 can be retracted and separated from the surface of the mold 200, thereby only realizing the oil coating action.

In conclusion, the scribing and oiling integrated device 100 mentioned in the embodiment integrates the oiling component 150 and the scribing component 170 through the bearing frame 130, so that scribing and oiling processes can be performed simultaneously, scribing and oiling integration is realized, single-station operation is adopted, the working efficiency is greatly improved, the occupied area is small, and the field is saved.

Second embodiment

Referring to fig. 4, the basic structure and principle of the device 100 for applying oil to a scribe line and a scribe line are the same as those of the first embodiment, and for the sake of brevity, reference may be made to the corresponding contents of the first embodiment for the parts not mentioned in this embodiment.

In this embodiment, the scribing and oiling integrated device 100 includes a frame 110, a carrier 130, an oiling component 150 and a scribing component 170, a traveling rail 110a is provided on the frame 110, the carrier 130 is movably disposed on the traveling rail 110a and can move along the traveling rail 110a, the oiling component 150 and the scribing component 170 are both movably disposed on the carrier 130, the oiling component 150 is used for oiling the mold 200 under the driving of the carrier 130, and the scribing component 170 is used for scribing on the mold 200 under the driving of the carrier 130.

In this embodiment, the carriage 130 is provided with a first shift rail 130b and a second shift rail 130c, the oiling assembly 150 is movably disposed on the first shift rail 130b and can move along the first shift rail 130b, and the scribing assembly 170 is movably disposed on the second shift rail 130c and can move along the second shift rail 130 c. Specifically, the carrier 130 has a single beam structure, the first displacement rail 130b and the second displacement rail 130c are respectively disposed on two sides of the carrier 130, the scribing assembly 170 and the oiling assembly 150 are respectively disposed on two sides of the carrier 130, and the scribing assembly 170 and the oiling assembly 150 can move independently of each other, without interfering with each other, and operate independently, and the efficiency is high.

It should be noted that the connection structures between the oiling assembly 150 and the first displacement rail 130b and between the scribing assembly 170 and the second displacement rail 130c refer to the related structures in the first embodiment, and all the connection structures are driven by a rack and pinion manner, and will not be described in detail herein.

Third embodiment

Referring to fig. 5, the basic structure and principle of the device 100 for applying oil to a scribe line and the technical effects thereof are the same as those of the first embodiment, and for the sake of brevity, reference may be made to the corresponding contents of the first embodiment for the parts not mentioned in this embodiment.

The scribing and oiling integrated device 100 comprises a rack 110, a bearing frame 130, an oiling component 150 and a scribing component 170, wherein a walking rail 110a is arranged on the rack 110, the bearing frame 130 is movably arranged on the walking rail 110a and can move along the walking rail 110a, the oiling component 150 and the scribing component 170 are movably arranged on the bearing frame 130, the oiling component 150 is used for oiling a die 200 under the driving of the bearing frame 130, and the scribing component 170 is used for scribing on the die 200 under the driving of the bearing frame 130.

The carriage 130 is provided with a first shift rail 130b and a second shift rail 130c, the oiling assembly 150 is movably disposed on the first shift rail 130b and can move along the first shift rail 130b, and the scribing assembly 170 is movably disposed on the second shift rail 130c and can move along the second shift rail 130 c.

In this embodiment, the carriage 130 includes a first beam 131 and a second beam 133 disposed at an interval, the first beam 131 and the second beam 133 are movably disposed on the traveling rail 110a, the first displacement rail 130b is disposed on the first beam 131, and the second displacement rail 130c is disposed on the second beam 133. Specifically, the oiling assembly 150 is arranged on the first cross beam 131, the scribing assembly 170 is arranged on the second cross beam 133, and the scribing assembly 170 and the oiling assembly 150 can move independently, do not interfere with each other, operate independently and are high in efficiency.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The scribing and oiling integrated device is characterized by comprising a rack (110), a bearing frame (130), an oiling component (150) and a scribing component (170), wherein a walking track (110a) is arranged on the rack (110), the bearing frame (130) is movably arranged on the walking track (110a) and can move along the walking track (110a), the oiling component (150) and the scribing component (170) are movably arranged on the bearing frame (130), the oiling component (150) is used for oiling a die (200) under the driving of the bearing frame (130), and the scribing component (170) is used for scribing on the die (200) under the driving of the bearing frame (130).

2. The streaking and oiling integrated device as claimed in claim 1, wherein the carrier (130) is provided with an adjusting rail (130a), the extending direction of the adjusting rail (130a) is perpendicular to the extending direction of the walking rail (110a), the oiling component (150) is movably arranged on the adjusting rail (130a) and can move along the adjusting rail (130a), and the streaking component (170) is connected with the oiling component (150) and is used for moving relative to the carrier (130) under the driving of the oiling component (150).

3. The streaking and oiling integrated device of claim 2 wherein the oiling assembly (150) comprises a mounting plate (151), a first driving member (153), an oiling seat (155) and an oiling brush head (157), the mounting plate (151) is slidably disposed on the adjustment rail (130a), the first driving member (153) is disposed on the mounting plate (151) and used for driving the mounting plate (151) to move along the adjustment rail (130a), the oiling seat (155) is connected with the mounting plate (151), the oiling brush head (157) is disposed at the bottom of the oiling seat (155), and the streaking assembly (170) is connected with the oiling seat (155).

4. The device for coating one side of the scribing line as claimed in claim 3, wherein the adjusting track (130a) is provided with a first rack (131a), the extending direction of the first rack (131a) is parallel to the extending direction of the adjusting track (130a), the output shaft of the first driving member (153) is provided with a first gear (153a), and the first gear (153a) is meshed with the first rack (131 a).

5. The device for integral scoring and oiling according to claim 3, wherein the oiling assembly (150) further comprises a second driving member (159), a transmission member (158) is arranged on the oiling seat (155), the second driving member (159) is arranged on the mounting plate (151), the transmission member (158) is movably arranged on the mounting plate (151), and the second driving member (159) is in transmission connection with the transmission member (158) and is used for lifting or lowering the oiling seat (155).

6. The integral score oiling device according to claim 5, wherein a second rack (158a) is arranged on the transmission member (158), the extending direction of the second rack (158a) is perpendicular to the extending direction of the adjusting track (130a), a second gear (159a) is arranged on the output shaft of the second driving member (159), and the second gear (159a) is meshed with the second rack (158 a).

7. The one-piece device for streaking and greasing as claimed in claim 3, wherein the streaking assembly (170) includes a streaking bracket (171) and a streaking bar (173), the streaking bracket (171) is connected to a top portion of the greasing seat (155), the streaking bar (173) is provided on the streaking bracket (171) and extends downward to be flush with a bottom portion of the greasing seat (155), and an extension direction of the streaking bar (173) is perpendicular to an extension direction of the adjustment rail (130 a).

8. The one-piece score oiling device of claim 1, wherein the carriage (130) is provided with a first displacement track (130b) and a second displacement track (130c), the oiling assembly (150) is movably arranged on the first displacement track (130b) and can move along the first displacement track (130b), and the score assembly (170) is movably arranged on the second displacement track (130c) and can move along the second displacement track (130 c).

9. The one-piece score oiling device of claim 8, wherein the carrier (130) comprises a first beam (131) and a second beam (133) which are arranged at intervals, the first beam (131) and the second beam (133) are movably arranged on the walking track (110a), the first displacement track (130b) is arranged on the first beam (131), and the second displacement track (130c) is arranged on the second beam (133).

10. The streaking and oiling integrated device as claimed in any one of claims 1 to 7, wherein the frame (110) comprises a first walking frame (111) and a second walking frame (113) which are oppositely arranged, the first walking frame (111) and the second walking frame (113) are respectively provided with a walking rail (110a), two ends of the bearing frame (130) are respectively and movably arranged on the two walking rails (110a), and the bearing frame (130) is further provided with a walking driving member (117), and the walking driving member (117) is used for driving the bearing frame (130) to move along the walking rails (110 a).

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