Track slab spiral reinforcement casing installation machine

Abstract

The present application provides a track plate spiral reinforcement sleeve installation machine, including a guide rail, a truss beam, a sleeve installation assembly, a transverse guide rail and a transverse motor; the sleeve installation assembly can move along the transverse guide rail on the truss beam; the sleeve installation assembly includes a lifting mechanism, a crossbar, a clamping cylinder and a suction cup, and the lifting mechanism can drive the crossbar to lift and lower; a plurality of clamping cylinders are arranged on the crossbar, and a suction cup that can absorb the spiral reinforcement sleeve is connected to the telescopic rod of the clamping cylinder. The truss beam is driven to move on the guide rail by a moving motor, and the sleeve installation assembly is driven to move on the transverse guide rail by a transverse motor, so that the sleeve installation assembly can be moved above the positioning columns of different columns on the mold, and the suction cup that can absorb the sleeve is driven by the lifting motor to lift and lower, so as to accurately place the sleeve on the positioning column; after the sleeve is placed on the positioning column, the clamping cylinder is started to clamp the sleeve on the positioning column, thereby solving the problem of high failure rate of manual installation of spiral reinforcement sleeves.

Description

Technical Field

[0001] The present application relates to the technical field of track plate production, and in particular to a track plate spiral reinforcement sleeve installation machine. Background Art

[0002] Track slabs refer to new rail sub-components with a plate structure that supports and fixes rails and distributes the load transmitted by the train through the rails to the base under the slab. Track slabs are made by pouring concrete in a special mold, and then demolding the concrete after it solidifies. In order to reserve positions for positioning and installing other devices on the track slab, spiral rib sleeves will be preset in the mold before the track slab is cast and formed. After the track slab is cast and formed, it will be used to position and install other components. There are multiple sleeve installation positions on the track slab mold. In order to fix the sleeve position, a positioning column is pre-set at each installation position.

[0003] In the prior art, the spiral reinforcement sleeve is generally installed manually. During installation, the spiral reinforcement sleeve is placed on the positioning column, and then the top of the spiral reinforcement sleeve is tapped with a rubber hammer to fix the spiral reinforcement sleeve on the positioning column to prevent the position of the spiral reinforcement sleeve from moving when pouring concrete. However, if the manual tapping force is too strong, the spiral reinforcement sleeve may be damaged on the one hand, and the spiral reinforcement sleeve is too tightly combined with the positioning column on the other hand, which increases the difficulty of demoulding, or damages the spiral reinforcement sleeve during demoulding.

[0004] In order to avoid the above problems, it is necessary to ensure the installation tightness of the spiral rib sleeve and the positioning column when installing the spiral rib sleeve, that is, to control the force of knocking the spiral rib sleeve. However, when installing the spiral rib sleeve manually, the knocking force is difficult to control and the installation efficiency is low, which can easily cause the sleeve installation failure. Summary of the invention

[0005] The present application provides a track plate spiral reinforcement sleeve installation machine to solve the problem of high failure rate of manual installation of spiral reinforcement sleeves in the prior art.

[0006] The present application provides a track plate spiral reinforcement sleeve installation machine, comprising guide rails arranged on both sides of a mold, and two truss beams arranged on the guide rails, both ends of the two truss beams are provided with moving motors; the truss beams move along the guide rails through the moving motors, and also includes a sleeve installation assembly, and the truss beams are also provided with a transverse guide rail and a transverse motor;

[0007] The transverse motor can move on the transverse guide rail, and the two ends of the sleeve mounting assembly are connected to a transverse motor, and the transverse motor connected at both ends moves along the transverse guide rail on the truss beam;

[0008] The sleeve installation assembly includes a lifting mechanism, a cross bar, a clamping cylinder and a suction cup; the number of the lifting mechanisms is two, which are respectively connected to the two transverse motors, and the cross bar is connected between the two lifting mechanisms to drive the cross bar to move up and down;

[0009] A plurality of the pressing cylinders are arranged on the cross bar, and a suction cup is arranged on the telescopic rod of each pressing cylinder to absorb the spiral rib sleeve.

[0010] Optionally, it further comprises a feeding mechanism, wherein the feeding mechanism is arranged below the guide rail on one side of the mold;

[0011] The feeding mechanism comprises a feeding conveyor belt and multiple rows of feeding columns; the multiple rows of feeding columns are arranged on the feeding conveyor belt, and the number of feeding columns in each row is the same as the number of positioning columns in each row in the mold to place spiral rib sleeves.

[0012] Optionally, the lifting mechanism includes a lifting motor, a transmission screw and a lifting rod;

[0013] The transmission screw is connected to the transverse movement motor through a screw nut, the two ends of the transmission screw are connected to the lifting rod, and the lower ends of the two lifting rods are respectively connected to the two ends of the cross bar.

[0014] Optionally, the number of the clamping cylinders provided on the cross bar is the same as the number of positioning columns in each column provided on the mold.

[0015] Optionally, it further includes two positioning devices, both of which are arranged on the mold transportation track to position the two ends of the mold.

[0016] Optionally, the positioning device includes a positioning motor and a positioning block; the positioning block is connected to the positioning motor to clamp the two ends of the mold.

[0017] Optionally, it also includes a mold conveying line; the mold conveying line includes a mold transport vehicle and a transport track; the mold transport vehicle is arranged on the transport track and can move along the transport track.

[0018] It can be known from the above technical scheme that a track plate spiral rib sleeve installation machine provided in an embodiment of the present application comprises guide rails arranged on both sides of a mold, and two truss beams arranged on the guide rails, and both ends of the two truss beams are provided with moving motors; the truss beams are moved along the guide rails by the moving motors, and also comprise a sleeve installation assembly, and a transverse guide rail and a transverse motor are also provided on the truss beam; the transverse motor can move on the transverse guide rail, and both ends of the sleeve installation assembly are connected to a transverse motor, and the sleeve installation assembly moves along the transverse guide rail on the truss beam through the transverse motors connected at both ends; the sleeve installation assembly comprises a lifting mechanism, a cross bar, a clamping cylinder and a suction cup; the number of the lifting mechanisms is two, which are respectively connected to the two transverse motors, and the cross bar is connected between the two lifting mechanisms, which can drive the cross bar to lift and lower; a plurality of clamping cylinders are provided on the cross bar, and the suction cup is provided on the telescopic rod of each clamping cylinder to absorb the spiral rib sleeve.

[0019] In actual application, the truss crossbeam is driven by the moving motor to move on the guide rail, so that the sleeve installation assembly is moved above the sleeve installation position on the mold, and the sleeve installation assembly is driven by the transverse motor to move on the transverse guide rail, so that the sleeve installation assembly can be moved above the positioning columns of different columns on the mold, and the suction cup that can absorb the sleeve is driven by the lifting motor to perform lifting and lowering movements, so as to accurately place the sleeve on the positioning column and avoid tilting during the placement process; after the sleeve is placed on the positioning column, the clamping cylinder is started to press the sleeve on the positioning column, and the clamping force of the clamping cylinder can be set according to needs, thereby ensuring constant force clamping of the sleeve and avoiding the sleeve from being installed too tightly or too loosely on the positioning column, thereby realizing rapid installation of the sleeve in the mold and ensuring the installation quality of the sleeve, thereby solving the problem of high failure rate of manual installation of spiral rib sleeves. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of the overall structure of a track plate spiral reinforcement casing installation machine provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of a casing installation assembly of a track plate spiral reinforcement casing installation machine provided in an embodiment of the present application;

[0023] Figure 3A schematic diagram of the structure of a lifting mechanism of a track plate spiral reinforcement casing installation machine provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the clamping cylinder structure of a track plate spiral rib casing installation machine provided in an embodiment of the present application.

[0025] Illustration Description:

[0026] Among them, 1-guide rail, 2-truss crossbeam, 3-moving motor, 4-sleeve installation assembly, 41-lifting mechanism, 411-lifting motor, 412-driving screw, 413-lifting rod, 42-cross bar, 43-clamping cylinder, 44-suction cup, 5-transverse guide rail, 6-transverse motor, 7-feeding mechanism, 71-feeding conveyor belt, 72-feeding column, 8-positioning device, 81-positioning motor, 82-positioning block, 9-mold conveyor line, 91-mold transport vehicle, 92-transport track. DETAILED DESCRIPTION

[0027] The following embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following embodiments do not represent all implementations consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application as detailed in the claims.

[0028] See also Figure 1 A schematic diagram of the overall structure of a track plate spiral reinforcement sleeve installation machine provided in an embodiment of the present application.

[0029] See also Figure 4 , which is a schematic diagram of the clamping cylinder structure of a track plate spiral rib sleeve installation machine provided in an embodiment of the present application.

[0030] In order to solve the problem of high failure rate of manual installation of spiral reinforcement casing in the prior art, Figure 1 and Figure 4As shown, a track plate spiral rib sleeve installation machine provided in an embodiment of the present application includes a guide rail 1 arranged on both sides of a mold, and two truss beams 2 arranged on the guide rail 1, and both ends of the two truss beams 2 are provided with a moving motor 3; the truss beam 2 moves along the guide rail 1 through the moving motor 3, and also includes a sleeve installation component 4, and a transverse guide rail 5 and a transverse motor 6 are also provided on the truss beam 2; the transverse motor 6 can move on the transverse guide rail 5, and both ends of the sleeve installation component 4 are connected to a transverse motor 6, through The transverse motor 6 connected at both ends moves along the transverse guide rail 5 on the truss crossbeam 2; the sleeve installation assembly 4 includes a lifting mechanism 41, a cross bar 42, a clamping cylinder 43 and a suction cup 44; the number of the lifting mechanism 41 is two, which are respectively connected to the two transverse motors 6, and the cross bar 42 is connected between the two lifting mechanisms 41, which can drive the cross bar 42 to rise and fall; a plurality of clamping cylinders 43 are arranged on the cross bar 42, and the suction cup 44 is arranged on the telescopic rod of each clamping cylinder 43 to absorb the spiral rib sleeve.

[0031] It should be noted that the embodiment of the present application is used for the installation of a spiral rib sleeve, but is not limited to the spiral rib sleeve and can also be implemented for other forms of sleeves. For the sake of ease of explanation, it is hereinafter referred to as the sleeve, and unless otherwise specified, it represents the spiral rib sleeve.

[0032] When installing the sleeves on the mold, since the sleeves on the track plate are regularly distributed and generally divided into four columns, and each column needs to install multiple sleeves, four columns of positioning columns are correspondingly arranged in the mold. The track plate spiral rib sleeve installation machine provided in this application adopts a column installation method, that is, the installation of one column of sleeves is completed at a time. In order to adjust the position of the sleeve installation assembly 4, the multiple sleeves absorbed by the sleeve installation assembly 4 correspond to the installation position of one column on the mold. The guide rail 1 is supported by columns on both sides of the mold, and two truss beams 2 are movably connected on the guide rail so that the sleeve installation assembly 4 is connected between the two truss beams 2, so that the sleeve installation assembly 4 can be operated from above the mold. At the same time, the guide rail 1 and the truss beam 2 are above the mold to avoid interfering with the transportation of the mold. In order to realize the movement of the truss beam 2 on the guide rail 1, a moving motor 3 is arranged on the truss beam 2, and the truss beam 2 is driven to move on the guide rail 1 by the moving motor 3.

[0033] In order to realize the continuous installation of sleeves on multiple columns of positioning columns, that is, after one column of sleeves is installed, the sleeve installation assembly 4 continues to install the next column of sleeves of the mold, the transverse motor 6 is connected to the transverse guide rail 5 through a slider. In order to ensure the stability of operation, multiple parallel transverse guide rails 5 can be set on the truss crossbeam 2. The multiple columns of transverse guide rails 5 can be set on one side of the truss crossbeam 2, or respectively on different sides of the truss crossbeam 2. The output end of the transverse guide rail 5 cooperates with the rack set on the truss crossbeam 2 to drive the movement of the sleeve installation assembly 4 on the truss crossbeam 2. Through the moving motor 3 and the transverse motor 6, it is ensured that the sleeve sucked by the sleeve installation assembly 4 can be accurately moved to the top of the positioning column, and the sleeve can be accurately placed on the positioning column to avoid tilting during the placement process.

[0034] In order to place the sleeve on the positioning column and press it, the number of the lifting mechanism 41 is two, which are respectively connected to the two ends of the cross bar 42 to drive the cross bar 42 to move up and down, so that the sleeve sucked on the suction cup 44 can be placed in the installation position. After being placed in place, the suction cup 44 stops working and releases the sucked sleeve. Then, the pressing cylinder 43 works and the telescopic rod extends, so that the sleeve is pressed on the installation position of the mold through the lower plane of the suction cup 44. It should be noted that a positioning column will be reserved at the sleeve installation position of the mold. The sleeve can be fixed on the positioning column by pressing the sleeve, and the top of the sleeve has a flat surface, which can be sucked by the suction cup. The pressing force of the pressing cylinder 43 can be set according to needs, ensuring constant force pressing on the sleeve and avoiding the sleeve from being installed too tightly or too loosely on the positioning column.

[0035] In order to achieve synchronous installation of a row of sleeves, the cross bar 42 is provided with more than one clamping cylinder 43. Each of the telescopic rods of the clamping cylinder 43 is connected to a suction cup 44, and the distance between two adjacent suction cups 44 is equal to the distance between the positioning columns on the mold.

[0036] In actual application, the truss crossbeam 2 is driven by the moving motor 3 to move on the guide rail 1, so that the sleeve installation assembly 4 is moved to the top of the sleeve installation position on the mold, and the sleeve installation assembly 4 is driven by the transverse motor 6 to move on the transverse guide rail 5, so that the sleeve installation assembly 4 can be moved to the top of the positioning columns of different columns on the mold, and the suction cup 44 that can absorb the sleeve is driven by the lifting motor 411 to perform lifting and lowering movements, so as to accurately place the sleeve on the positioning column to avoid tilting during the placement process; after the sleeve is placed on the positioning column, the clamping cylinder 43 is started to press the sleeve on the positioning column, and the clamping force of the clamping cylinder 43 can be set according to needs, thereby ensuring constant force clamping of the sleeve and avoiding the sleeve from being installed too tightly or too loosely on the positioning column, thereby realizing rapid installation of the sleeve in the mold and ensuring the installation quality of the sleeve, thereby solving the problem of high failure rate of manual installation of spiral rib sleeve.

[0037] See also Figure 2 A schematic diagram of the structure of a sleeve installation component of a track plate spiral rib sleeve installation machine provided in an embodiment of the present application.

[0038] In order to achieve continuous installation of the mold sleeve to improve installation efficiency, such as Figure 1 and Figure 2 As shown, in some embodiments of the present application, a feeding mechanism 7 is further included, and the feeding mechanism 7 is arranged below the guide rail 1 on one side of the mold; the feeding mechanism 7 includes a feeding conveyor belt 71 and a plurality of rows of feeding columns 72; the plurality of rows of the feeding columns 72 are arranged on the feeding conveyor belt 71, and the number of the feeding columns 72 in each row is the same as the number of the positioning columns in each row in the mold, so as to place the spiral rib sleeve.

[0039] The feeding mechanism 7 is arranged on one side of the mold and below the guide rail 1, so that a part of the truss crossbeam 2 extends above the feeding mechanism 7, so that the sleeve installation assembly 4 can move to the top of the feeding mechanism 7 to absorb the sleeve. In order for the sleeve installation assembly 4 to complete the sleeve absorption at one time, the number of feeding columns 72 in each column is the same as the number and spacing of positioning columns in each column on the mold, and sleeves are placed on the feeding columns 72, with the upper end of the sleeve facing upward; the intermittent movement of the feeding conveyor belt 71 ensures that after each sleeve absorption by the sleeve installation assembly 4, the feeding conveyor belt 71 drives the multiple columns of the feeding columns 72 to move a certain distance to wait for the next sleeve absorption.

[0040] See also Figure 3 A schematic diagram of the lifting mechanism structure of a track plate spiral reinforcement sleeve installation machine provided in an embodiment of the present application.

[0041] In order to realize the lifting movement of the sleeve installation assembly 4, as Figure 3As shown, in some embodiments of the present application, the lifting mechanism 41 includes a lifting motor 411, a transmission screw 412 and a lifting rod 413; the transmission screw 412 is connected to the transverse movement motor 6 through a screw nut, and the two ends of the transmission screw 412 are connected to the lifting rod 413, and the lower ends of the two lifting rods 413 are respectively connected to the two ends of the cross bar 42.

[0042] The transmission screw 412 is screwed to the slider on the transverse motor 6, and the two ends of the transmission screw are respectively connected to the two ends of the lifting rod 413. The lifting motor 411 is arranged at the upper end of the lifting rod 413, and the output end of the lifting motor 411 is connected to the transmission screw 412. Through the cooperation between the lifting motor 411 and the transmission screw 412, the rotational motion of the lifting motor 411 is converted into the lifting and lowering of the lifting rod 413, thereby realizing the lifting and lowering motion of the sleeve installation assembly 4.

[0043] In some embodiments of the present application, the number of the pressing cylinders 43 provided on the crossbar 42 is the same as the number of the positioning columns in each row provided on the mold, so that the sleeve installation of the positioning columns in one row can be completed at one time.

[0044] In order to ensure that the mold reaches the correct position and does not move during the installation of the sleeve, Figure 1 As shown, in some embodiments of the present application, a positioning device 8 is also included, and the number of the positioning devices 8 is two, both of which are arranged on the mold transport track to position the two ends of the mold. Further, the positioning device 8 includes a positioning motor 81 and a positioning block 82; the positioning block 82 is connected to the positioning motor 81 to clamp the two ends of the mold. The positioning motor 81 is set on the ground and connected to the positioning block 82. The positioning block 82 can be driven by the positioning motor 81 to perform lifting and lowering movements. When the positioning block 82 is raised, the two ends of the mold can be clamped. When the positioning block 82 is lowered, the positioning device 8 will not affect the normal movement of the two ends of the mold. It should be noted that a groove can be reserved on the foundation where the positioning block 82 is set. When the positioning block 82 is lowered, it sinks into the reserved groove. The positioning motor 81 can drive the movement of the positioning block 82 through the matching mechanism of the gear and the rack.

[0045] In some embodiments of the present application, Figure 1 As shown, the mold conveying line 9 is also included; the mold conveying line 9 includes a mold transport vehicle 91 and a transport track 92; the mold transport vehicle 91 is arranged on the transport track 92 and can move along the transport track 92. In actual application, the mold can be placed on the mold transport vehicle 91 and maintained in a horizontal state, and the mold transport vehicle 91 then transports the mold along the transport track 92 to the sleeve installation station for sleeve installation.

[0046] It can be seen from the above technical scheme that a track plate spiral rib sleeve installation machine provided in an embodiment of the present application includes a guide rail 1 arranged on both sides of a mold, and two truss beams 2 arranged on the guide rail 1, and both ends of the two truss beams 2 are provided with a moving motor 3; the truss beam 2 moves along the guide rail 1 through the moving motor 3, and also includes a sleeve installation assembly 4, and a transverse guide rail 5 and a transverse motor 6 are also provided on the truss beam 2; the transverse motor 6 can move on the transverse guide rail 5, and both ends of the sleeve installation assembly 4 are connected to one of the transverse motors 6, moves along the transverse guide rail 5 on the truss crossbeam 2 through the transverse motor 6 connected at both ends; the sleeve installation assembly 4 includes a lifting mechanism 41, a cross bar 42, a clamping cylinder 43 and a suction cup 44; the number of the lifting mechanism 41 is two, which are respectively connected to the two transverse motors 6, and the cross bar 42 is connected between the two lifting mechanisms 41, which can drive the cross bar 42 to rise and fall; a plurality of clamping cylinders 43 are arranged on the cross bar 42, and the suction cup 44 is arranged on the telescopic rod of each clamping cylinder 43 to absorb the spiral rib sleeve.

[0047] In actual application, the truss crossbeam 2 is driven by the moving motor 3 to move on the guide rail 1, so that the sleeve installation assembly 4 is moved to the top of the sleeve installation position on the mold, and the sleeve installation assembly 4 is driven by the transverse motor 6 to move on the transverse guide rail 5, so that the sleeve installation assembly 4 can be moved to the top of the positioning columns of different columns on the mold, and the suction cup 44 that can absorb the sleeve is driven by the lifting motor 411 to perform lifting and lowering movements, so as to accurately place the sleeve on the positioning column to avoid tilting during the placement process; after the sleeve is placed on the positioning column, the clamping cylinder 43 is started to press the sleeve on the positioning column, and the clamping force of the clamping cylinder 43 can be set according to needs, thereby ensuring constant force clamping of the sleeve and avoiding the sleeve from being installed too tightly or too loosely on the positioning column, thereby realizing rapid installation of the sleeve in the mold and ensuring the installation quality of the sleeve, thereby solving the problem of high failure rate of manual installation of spiral rib sleeve.

[0048] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without creative work belong to the protection scope of this application.

Claims

1. A track plate spiral reinforcement sleeve installation machine, comprising guide rails (1) arranged on both sides of a mold, and two truss beams (2) arranged on the guide rails (1), and both ends of the two truss beams (2) are provided with a moving motor (3); the truss beams (2) are moved along the guide rails (1) by the moving motor (3), characterized in that: It also includes a sleeve installation assembly (4), and a transverse guide rail (5) and a transverse motor (6) are also provided on the truss crossbeam (2); The transverse motor (6) can move on the transverse guide rail (5), and the two ends of the sleeve installation assembly (4) are each connected to a transverse motor (6), so that the sleeve installation assembly (4) moves along the transverse guide rail (5) on the truss crossbeam (2) through the transverse motor (6) connected at both ends; The sleeve installation assembly (4) comprises a lifting mechanism (41), a cross bar (42), a pressing cylinder (43) and a suction cup (44); the lifting mechanisms (41) are two in number, respectively connected to the two transverse motors (6); the cross bar (42) is connected between the two lifting mechanisms (41) and can drive the cross bar (42) to be lifted or lowered; A plurality of the pressing cylinders (43) are arranged on the cross bar (42), and a suction cup (44) is arranged on the telescopic rod of each pressing cylinder (43) to suck the spiral rib sleeve; A feeding mechanism (7), the feeding mechanism (7) being arranged below the guide rail (1) on one side of the mold; the feeding mechanism (7) comprising a feeding conveyor belt (71) and a plurality of rows of feeding columns (72); the plurality of rows of feeding columns (72) being arranged on the feeding conveyor belt (71) to place spiral rib sleeves; the feeding conveyor belt (71) moves intermittently.

2. The track plate spiral reinforcement casing installation machine according to claim 1, characterized in that ,, the number of the feeding columns (72) in each column is the same as the number of the positioning columns in each column in the mold.

3. The track plate spiral reinforcement casing installation machine according to claim 1, characterized in that: The lifting mechanism (41) comprises a lifting motor (411), a transmission screw (412) and a lifting rod (413); The transmission screw (412) is connected to the transverse movement motor (6) via a screw nut, and both ends of the transmission screw (412) are connected to the lifting rod (413), and the lower ends of the two lifting rods (413) are respectively connected to both ends of the cross bar (42).

4. The track plate spiral reinforcement casing installation machine according to claim 1, characterized in that: The number of the pressing cylinders (43) arranged on the crossbar (42) is the same as the number of positioning columns in each row arranged on the mold.

5. The track plate spiral reinforcement casing installation machine according to claim 1, characterized in that: It also includes positioning devices (8), the number of which is two, both of which are arranged on the mold transport track to position the two ends of the mold.

6. The track plate spiral reinforcement casing installation machine according to claim 5, characterized in that: The positioning device (8) comprises a positioning motor (81) and a positioning block (82); The positioning block (82) is connected to the positioning motor (81) to clamp the two ends of the mold.

7. The track plate spiral reinforcement casing installation machine according to claim 1, characterized in that: Also includes a mold conveying line (9); The mold conveying line (9) comprises a mold transport vehicle (91) and a transport track (92); the mold transport vehicle (91) is arranged on the transport track (92) and can move along the transport track (92).

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