WO2023019861A1

WO2023019861A1 - Track trolley

Info

Publication number: WO2023019861A1
Application number: PCT/CN2021/142942
Authority: WO
Inventors: 丁宁; 李德程; 郝万鈞; 张爱东
Original assignee: 香港中文大学（深圳）
Priority date: 2021-08-18
Filing date: 2021-12-30
Publication date: 2023-02-23
Also published as: CN113636287A

Abstract

A track trolley capable of preventing rollover and falling and facilitating disassembling and assembling, comprising two wheel trains mounted opposite on two sides of a middle connecting part (30). Each wheel train comprises a connecting plate (11), a power module (12), a driving wheel (13), two connecting rods (14), two sets of driven wheels (15), and two sets of elastic members (16). The connecting plate is connected to the middle connecting part. The power module is fixedly mounted on the connecting plate, and the driving wheel is fixedly mounted on an output shaft of the power module. The two connecting rods are provided on two sides of the axis of the driving wheel, respectively, and one end of each connecting rod is rotatably connected to the connecting plate, and the other end thereof is fixedly provided with a set of driven wheels. A set of elastic members is provided between the connecting plate and each connecting rod. A groove (131) of the driving wheel is restrained on one side of a track (50) under the action of two sets of elastic members, and grooves (151) of two sets of driven wheels are restrained on the other side of the track under the action of a set of elastic members, respectively.

Description

a track car

This application claims the priority of the Chinese patent application with the application number 202110957461.8 and the title of the invention "a rail trolley" submitted to the China Patent Office on August 18, 2021, the entire contents of which are incorporated in this application by reference.

technical field

The embodiment of the present application relates to the technical field of bridge detection, and in particular to a rail trolley.

Background technique

Regularly inspecting the bottom of the bridge is an important means to detect bridge defects in a timely manner. By building a track at the bottom of the bridge and allowing the trolleys equipped with inspection equipment to drive on the track to replace the manual inspection of the bottom of the bridge, the detection cost is low and the detection efficiency High and can avoid the risk of casualties, it has become the main way to detect the bottom surface of the bridge at present.

However, when the track car is running on the track built at the bottom of the bridge, it is often affected by the natural wind and there is a risk of rolling over and falling. In addition, there are usually multiple piers on the bottom of the bridge, and it is difficult to avoid when the track meets the bridge piers, so it needs to be retracted and rebuilt. During this process, frequent disassembly and assembly between the track trolley and the track is required; It has the basic functions of anti-rollover and easy disassembly.

Contents of the invention

An embodiment of the present application provides a rail trolley, which can realize two functions of preventing rollover and falling and facilitating assembly and disassembly.

A track trolley provided in an embodiment of the present application includes two wheel trains and an intermediate connecting part, and the two wheel trains are relatively installed on both sides of the intermediate connecting part;

The wheel train includes a connecting plate, a power module, a driving wheel, two connecting rods, two sets of driven wheels and two sets of elastic elements;

The connection plate is connected to the intermediate connection part;

The power module is fixedly mounted on the connecting plate, and the output shaft of the power module is fixedly mounted on the driving wheel;

The two connecting rods are respectively arranged on both sides of the axis of the driving wheel, and one end of each connecting rod is rotatably connected to the connecting plate, and the other end is fixedly installed with a set of driven wheels;

The driving wheel is provided with a groove for constraining the track, and each set of driven wheels is provided with a groove for constraining the track; a set of elastic springs is respectively installed between the connecting plate and each of the connecting rods. The groove of the driving wheel is constrained to one side of the track under the action of the two sets of elastic elements, and the grooves of the two sets of driven wheels are respectively constrained to one side of the track under the action of a set of elastic elements. the other side of the track.

Optionally, first connecting ears are respectively provided at both ends of the intermediate connecting part;

Each of the connecting plates is provided with a second connecting ear;

The first connecting ear and the second connecting ear are installed with a fixing member so that the intermediate connecting portion is fixedly connected to the connecting plate.

Optionally, a hinge and a locking structure cooperating with the hinge are also included;

Both ends of the intermediate connecting portion are respectively provided with first connecting ears; each of the connecting plates is provided with second connecting ears;

The first connecting ear and the second connecting ear are installed with the hinge so that the intermediate connecting part is hingedly connected to the connecting plate;

The locking structure is used to fix the angle formed by the connection between the connecting plate and the intermediate connecting portion through the hinge connection.

Optionally, the first connecting ear is provided with an arc-shaped limiting groove matched with the hinge, and the arc-shaped limiting groove is used to limit the connecting plate relative to the middle with the hinge as the axis. The angle of rotation at which the joint performs a rotational movement.

Optionally, the locking structure includes an insert and a locking piece;

The first connecting ear is connected to the second connecting ear through the insert;

If the locking member does not lock the inserter, the inserter can slide in the arc-shaped limiting groove; if the locking member locks the inserter, the inserter is locked in the arc A position in the shape limit slot.

Optionally, one end of the connecting rod is connected to the connecting plate through a first hinge, and the other end is fixedly assembled with a set of driven wheels through a pin shaft and a bearing respectively.

Optionally, one end of the elastic member is connected to the link member through a second hinge, and the other end is connected to the connecting plate through a third hinge;

The installation positions of the second hinge and the third hinge do not coincide with the installation positions of the first hinge.

Optionally, the second hinge is installed at one or more of the first position, the second position and the third position of the link member;

Wherein, the first position is the middle part of the connecting rod, the second position is coincident with the installation position of the rotating shaft of the driven wheel, and the third position is the other end of the connecting rod .

Optionally, the third hinge is mounted on the top or bottom of the connecting plate.

Optionally, when the installation position of the third hinge is lower than the installation position of the first hinge, the driving wheel is constrained to the high side of the track under the thrust of the two sets of elastic members, and the two sets of The grooves of the driven wheels are respectively constrained to the lower side of the track under the pushing force of a set of elastic members.

Optionally, when the installation position of the third hinge is higher than the installation position of the first hinge, the driving wheel is constrained to the high side of the track under the pulling force of the two sets of elastic members. The grooves of the driven wheels are respectively constrained to the lower side of the track under the pulling force of a set of elastic members.

Optionally, when the installation position of the third hinge is lower than the installation position of the first hinge, the groove of the driving wheel is constrained to the lower side of the track under the pulling force of the two sets of elastic members The grooves of the two groups of driven wheels are respectively constrained to the high side of the track under the pulling force of one group of elastic members.

Optionally, when the installation position of the third hinge is higher than the installation position of the first hinge, the groove of the driving wheel is constrained to the lower side of the track by the pushing force of the two sets of elastic members The grooves of the two groups of driven wheels are respectively restrained on the high side of the track under the push force of one group of elastic members.

Optionally, the groove of the driving wheel and the groove of the driven wheel are V-shaped, U-shaped, rectangular or other shapes capable of constraining the track.

Optionally, the track is a track with a straight segment structure or a curved structure.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

The track trolley of the embodiment of the present application is used to carry detection equipment to drive on the bridge bottom track to detect the disease condition of the bridge bottom surface. Each wheel train includes a connecting plate, a power module, a driving wheel, two connecting rods, two sets of driven wheels and two sets of elastic parts; the connecting plate is connected to the middle connecting part; the power module is fixedly installed on the connecting plate , the output shaft of the power module is fixedly installed with the driving wheel, so that the driving wheel gets the power output of the power module to drive the track trolley to run on the track; two connecting rods are respectively arranged on both sides of the axis of the driving wheel, and each connecting rod One end of the piece rotates to connect the connecting plate, and the other end is fixedly installed with a group of driven wheels; the driving wheel is provided with a groove for constraining the track, and each group of driven wheels is provided with a groove for constraining the track; the connecting plate and each connecting rod are respectively Install a set of elastic parts, the groove of the driving wheel is constrained to one side of the track under the action of two sets of elastic parts, and the grooves of the two sets of driven wheels are respectively constrained to the other side of the track under the action of a set of elastic parts .

Because the elastic member itself has the characteristics of elastic deformation, when the rail trolley of the embodiment of the present application is assembled on the track, the groove of the driving wheel and the groove of the driven wheel will contact the track under the action of the elastic member, wherein each The driven wheels under the wheel train are all on the same side (such as the lower side) of the track that is in contact with it, and the driving wheels are on the other side (such as the upper side) of the track that is in contact with the driven wheels under the same wheel train. , to constrain the track between the grooves of the two kinds of driving wheels, so that the track trolley can only move along the extension direction of the track; When the groove is in the middle, it can prevent the track trolley from rotating around any track axis, that is, it can prevent the track trolley from turning over.

On the other hand, since the elastic member is connected with the link member, applying an external force (push or pull force) to the link member in each wheel train at the same time can indirectly promote the deformation of the elastic member, so that the gap between the driven wheel and the driving wheel A larger gap is formed; after the track is in the aforementioned gap, the aforementioned external force is removed, and the elastic member will return to its original shape, that is, the connecting rod will be subjected to the force of the elastic member (here, it is expressed as a reaction force opposite to the external force), so that the passive The wheels approach the track and eventually fit snugly against the track, making it easy to fit the track trolley onto the track. In the same way, an external force is applied to the connecting rods in each wheel train at the same time to deform the elastic parts so that a large gap is formed between the driven wheel and the driving wheel, and the track trolley can be easily lifted from the track. Disengage to realize easy disassembly between the track trolley and the track.

To sum up, the rail trolley in the embodiment of the present application can simultaneously have the functions of anti-rollover and falling and quick disassembly, so as to improve the timeliness of bridge disease detection.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations recorded in the application. For example, those skilled in the art can also obtain other drawings based on these drawings.

Fig. 1 is a structural representation of the track car of the embodiment of the present application;

Fig. 2 is a schematic structural diagram of the intermediate connection part of the embodiment of the present application;

Fig. 3 is a schematic structural diagram of a gear train according to an embodiment of the present application;

Fig. 4A is a front view of the wheel train shown in Fig. 3;

Fig. 4B is a right side view of the wheel train shown in Fig. 3;

Fig. 5 is a structural schematic diagram of the driven wheel of the embodiment of the present application;

Fig. 6 is another structural schematic diagram of a gear train according to the embodiment of the present application;

Fig. 7A is another front view of the wheel train shown in Fig. 3;

Fig. 7B is another right side view of the wheel train shown in Fig. 3;

Fig. 8 is another structural schematic diagram of the intermediate connection part of the embodiment of the present application;

Fig. 9 is a schematic structural diagram of the connecting plate of the embodiment of the present application;

Fig. 10 is another structural schematic diagram of the track trolley of the embodiment of the present application;

Fig. 11A is a front view of a wheel train according to an embodiment of the present application;

Figure 11B is a rear view of a wheel train in the embodiment of the present application;

Fig. 12A is another front view of a wheel train according to the embodiment of the present application;

Fig. 12B is another rear view of a wheel train according to the embodiment of the present application;

Fig. 13A is another front view of a wheel train according to the embodiment of the present application;

Fig. 13B is another rear view of a wheel train according to the embodiment of the present application;

Fig. 14A is another front view of a wheel train according to the embodiment of the present application;

Fig. 14B is another rear view of a wheel train according to the embodiment of the present application;

Fig. 15 is another structural schematic diagram of the track trolley of the embodiment of the present application;

Wherein, reference sign is:

10, the first wheel train; 20, the second wheel train; 30, the middle connecting part; 31, the first connecting ear; 311, the first hinge pin; 312, the second hinge pin; 313, the lock nut; 314, the arc 11, connecting plate; 111, second connecting ear; 12, power module; 121, output shaft; 122, fixed part of power module; 123, rotating part of power module; 13, driving wheel; 131, driving wheel 132, set screw; 14, connecting rod; 141, first position; 142, second position; 143, third position; 144, first hinge; 15, driven wheel; 151, driven wheel Groove; 152, pin shaft; 153, bearing; 16, elastic member; 161, second hinge; 162, third hinge; 40, gap; 50, track.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer " and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, Constructed and operative in a particular orientation and therefore should not be construed as limiting to the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the embodiments of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a A detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments of the present application in specific situations.

In the embodiment and the schematic diagram of the embodiment in this application, the two gear trains are relatively installed on both sides of the middle connecting part; in each gear train, the axis of the driving wheel is used as the axis: the two connecting rods can be regarded as left-right symmetry A pair of connecting rods, two groups of elastic parts can be regarded as a left-right symmetrical arrangement, and two groups of driven wheels can also be regarded as a left-right symmetrical arrangement. Therefore, for ease of description and understanding, please refer to FIG. 1 , the following mainly describes the embodiment of the first wheel train 10 , specifically, the connecting rod member and the elastic member on the side of the axis of the driving wheel under the first wheel train 10 are mainly described. And the driven wheel; that is, the connecting rod member, the elastic member and the driven wheel on the other side of the first wheel train 10, and the second wheel train 20 can be understood with reference to the same reason. It should be noted that the A, A-A and arrow marks in Fig. 5 can be understood as taking the pointing of the arrow as the view direction, and cutting the A part on the left side to obtain the half-sectional view of the A-A part on the right side; The direction of is the view direction, and the part C on the left side of Figure 6 is cut to obtain the half-sectional view on the right side.

The track trolley provided by the embodiment of the present application will be described below with reference to FIG. 1 to FIG. 7B .

The track trolley of the embodiment of the present application is used to carry detection equipment to drive on the bridge bottom track 50 to detect the disease condition of the bridge bottom surface, including: two wheel trains and an intermediate connecting part 30, and the two wheel trains are relatively installed on the intermediate connecting part 30 on both sides; each wheel train includes a connecting plate 11, a power module 12, a driving wheel 13, two connecting rods 14, two groups of driven wheels 15 and two groups of elastic members 16; the connecting plate 11 is connected to the middle connecting part 30 The power module 12 is fixedly installed on the connecting plate 11, and the output shaft 121 of the power module 12 is fixedly installed with the driving wheel 13, so that the driving wheel 13 obtains the power output of the power module 12 to drive the track trolley to travel on the track 50; two connecting rods 14 are respectively arranged on both sides of the axis of the driving wheel 13, and one end of each link member 14 is connected to the connecting plate 11 in rotation, and a group of driven wheels 15 are fixedly installed at the other end; Each group of driven wheels 15 is provided with a groove for constraining the track 50; a group of elastic members 16 are respectively installed between the connecting plate 11 and each link member 14, and the groove 131 of the driving wheel is under the action of the two groups of elastic members 16. Constrained to one side of the track 50 , the grooves 151 of the two sets of driven wheels are respectively constrained to the other side of the track 50 under the action of a set of elastic members 16 .

Because the elastic member 16 itself has the characteristics of elastic deformation, when the rail trolley of the embodiment of the present application is assembled on the track 50, the groove 131 of the driving wheel and the groove 151 of the driven wheel will all contact the track under the action of the elastic member 16 50, wherein, the driven wheels 15 under each train are on the same side of the track 50 in contact with it, and the driving wheels 13 are on the other side of the track 50 in contact with the driven wheels 15 under the same train. side, that is, the driven wheel 15 and the driving wheel 13 under the same wheel train respectively contact different sides of the track 50 (such as the opposite side of the upper and lower forms), so that the track 50 is bound between the grooves of the two kinds of driving wheels, so that the track trolley It can only move along the extending direction of the rail 50. It should be noted that the groove 131 of the driving wheel under a wheel train and the groove 151 of the driven wheel clamp a track in the middle, and its technical effect is that the wheel train cannot be disengaged from the track and can be moved along the track. It can move linearly in the extension direction of the track or rotate around the axis of the track, but it cannot effectively prevent the trolley from turning over; only when the driving wheel 13 and the driven wheel 15 in the left and right two wheel trains simultaneously clamp the two tracks in the middle of the groove, can it Preventing the track car from rotating about any single track axis prevents the track car from tipping over. Just because the two wheel trains constrain a track 50 respectively through the grooves of the driving wheel 13 and the driven wheel 15, the track car in the embodiment of the application has a good balance, even if it is affected by the wind, the track car will not have Risk of tipping and falling. Here, an example is described with each wheel train constraining a track.

On the other hand, because the elastic member 16 can be compressed or stretched, and is connected with the link member 14, a kind of external force (pushing force or pulling force, shown in Fig. 7A) is applied to the link member 14 in each wheel train simultaneously The F mark can be expressed as the action direction of the thrust) can indirectly promote the deformation of the elastic member 16, so that a larger gap 40 is formed between the driven wheel 15 and the driving wheel 13; after the track 50 is in the aforementioned gap 40, the force applied to the connecting rod is cancelled. The external force on the member 14, due to the elastic deformation characteristics of the elastic member 16 itself, the elastic member 16 will return to its original shape, that is, the connecting rod member 14 will be subjected to the force of the deformed elastic member 16 (here it is expressed as a reaction force opposite to the external force) , so that the driven wheel 15 approaches the track 50 and finally clings to the track 50 , so that the track trolley can be easily assembled on the track 50 . In the same way, an external force is applied to the connecting rod 14 in each wheel train at the same time to deform the elastic member 16 so that a larger gap 40 is formed between the driven wheel 15 and the driving wheel 13, and the track trolley can be moved. Easily disengage from the track 50 to realize the easy disassembly between the track trolley and the track 50.

In summary, the track trolley in the embodiment of the present application can simultaneously have the functions of preventing rollover and falling and quick disassembly, so as to improve the timeliness of bridge disease detection; it can be used on the track 50 of the straight section structure, or the curved structure on the track 50 (as shown in Figure 15).

Referring to Fig. 1 to Fig. 3, in a specific embodiment, a connection method of the intermediate connecting part 30 and the two wheel trains includes: first connecting ears 31 are respectively provided at both ends of the intermediate connecting part 30; 11 are provided with a second connecting ear 111; the first connecting ear 31 and the second connecting ear 111 are installed with a fixing member, so that the intermediate connecting part 30 forms a fixed connection structure with the two connecting plates 11 respectively. Wherein, the first connecting ear 31 and the second connecting ear 111 can be regarded as connecting pieces protruding from the intermediate connecting portion 30 and the connecting plate 11 respectively, and two through holes are opened on the first connecting ear 31 and the second connecting ear 111 respectively. (such as threaded holes), so that the two wheel trains are respectively fixedly connected on both sides of the middle connecting part 30 by installing fixtures (such as bolts); the protruding direction of the two second connecting ears 111 on the connecting plate 11 (toward ) is not limited, that is, the two second connecting ears 111 can be arranged on the same side of the connecting plate 11 or on different sides, specifically, one second connecting ear 111 is arranged on the same side of the driving wheel 13, and the other One second connecting ear 111 is disposed above the same side of the power module 12 , or the positions and orientations of the two second connecting ears 111 are shown in FIG. 3 .

In a specific embodiment, another connection method between the intermediate connecting part 30 and the two wheel trains includes: the two ends of the intermediate connecting part 30 are respectively provided with first connecting ears 31; each connecting plate 11 is provided with second connecting ears 111; the first connecting ear 31 and the second connecting ear 111 are installed with a hinge so that the intermediate connecting part 30 is hingedly connected to the connecting plate 11; the locking structure is used to fix the angle formed by the connecting plate and the intermediate connecting part through hinge connection . It should be noted that the locking structure here is a component on the hinge here, which is used to lock the connection angle between the intermediate connecting part 30 and the connecting plate 11 (so that the two do not rotate relative to each other), so that the connection The plate 11 is fixed in a certain deflected position on the intermediate connection 30 .

Please refer to FIGS. 8 to 10. In a specific embodiment, the first connecting ear 31 is provided with an arc-shaped limiting groove 314 that cooperates with the hinge. The rotation angle at which the shaft performs rotational movement relative to the intermediate connection part 30 . A circular hole (below) and an arc-shaped limiting groove 314 (above) are provided on the first connecting ear 31, and a lower through hole corresponding to the aforementioned circular hole and an upper corresponding to the arc-shaped limiting groove 314 are provided on the second connecting ear 111. Through holes; the locking structure includes inserts and locking parts. It should be noted that the hinges here are not self-locking hinges, and need to be locked through the locking structure, that is, the hinges and locking parts here. Structures are set separately. A hinge (such as the first hinge pin 311) is assembled between the circular hole and the lower through hole, so that the intermediate connecting portion 30 and the connecting plate 11 form a hinge connection structure; The plug-in (for example, the second hinge pin 312 ) locked by the locking member (for example, the lock nut 313 ) is installed, so that the aforementioned two hinged connections are fixedly connected at a certain angle. Wherein, if the locking member does not lock the plug-in, the plug-in can slide in the arc-shaped limiting groove 314; The insertion position in the shape limit groove 314 can be adjusted as required.

Please refer to Fig. 4A, Fig. 4B and Fig. 5, in a specific embodiment, one end of the connecting rod 14 is connected to the connecting plate 11 through the first hinge 144, and the other end is fixedly assembled with a group of driven wheels through the pin shaft 152 and the bearing 153 respectively. 15. The driven wheel 15 after assembling has degree of freedom of rotation (that is, rotates along the extension direction of the track 50) on the track 50 because of the driving of the driving wheel 13; 153 is arranged on both sides of the driven wheel 15, and the rotation centerline of the bearing 153 coincides with the rotation centerline of the driven wheel 15. One end of the elastic member 16 is connected with the link member 14 by the second hinge 161, and the other end is connected with the connecting plate 11 by the third hinge 162; Push or pull), the installation positions of the second hinge 161 and the third hinge 162 should not coincide with the installation position of the first hinge 144.

Referring to FIG. 11A and FIG. 11B , in a specific embodiment, the second hinge 161 is installed at one or more of the first position 141 , the second position 142 and the third position 143 of the link member 14 ; wherein, The first position 141 is the middle part (position 1) of the link member 14, the second position 142 is the position (position 2) coincident with the installation position of the rotating shaft of the driven wheel 15, and the third position 143 is the other end of the link member 14 (position 3). It should be noted that the specific number of elastic members 16 in each set of elastic members 16 may not be limited, but in order to better exert the force of the elastic members 16, the second hinge 161 is preferably installed at the first position 141 of the connecting rod member 14 place.

Please refer to FIG. 6 , in a specific embodiment, the connecting plate 11 is fixedly mounted on the power module fixing part 122 for installing the power module rotating part 123, the connecting plate 11 can be provided with a shaft through hole, and the output of the power module rotating part 123 The shaft 121 is fixedly mounted with the driving wheel 13 through the shaft through hole and the bearing, wherein the power module fixing part 122 and the power module rotating part 123 belong to the power module 12 . Optionally, the driving wheel 13 may be provided with a central through hole and a groove of the constraint rail 50, and the central through hole is matched with the output shaft 121 of the power module 12 and fixed by a fastener. Specifically, it can be understood that the central through hole The central axis of the central shaft and the shaft through hole can be coincident, and the central through hole is fixedly mounted on the output shaft 121 by installing a fastener (the fastener can be a set screw 132). Therefore, the rotation center of the driving wheel 13 Will coincide with the output shaft 121 center line. It should be noted that the shaft through hole and the matching bearing here can be removed, only the output shaft 121 is fixedly connected to the driving wheel 13 , and the power module fixing portion 122 is fixedly connected to the connecting plate 11 . The purpose of setting the shaft through hole and the matching bearing is to directly transmit the reaction force applied by the track to the driving wheel 13 to the connecting plate 11 through the shaft through hole and the bearing, without passing through the power module 12 and then to the connecting plate 11. To avoid deformation of the power module 12 .

When assembling the track trolley, the driving wheel 13 can be constrained on one side of the track 50 (specifically, it can be shown as that the groove 131 of the driving wheel is clamped on the side of the track 50), and then the driven wheel 15 and the driven wheel can be realized by applying and removing the external force. Constraints on the other side of track 50. The third hinge is mounted on the top or bottom of the connecting plate. When the track car is assembled on the track 50, because the positional relationship between the driving wheel 13 and the driven wheel 15 is different relative to the track 50, and the positions of the connection points at the two ends of the elastic member 16 are different, the active force of the elastic member 16 on the track car will be different. different, which will be explained in detail below. In the following description, the parts on both sides of the axis of the driving wheel 13 are symmetrically arranged, and the two sides can be understood in the same way, so only the parts on the right side of the axis of the driving wheel 13 are specifically described; for the convenience of understanding and description, the driving wheel A link member 14, a driven wheel 15 and an elastic member 16 can be respectively provided on both sides of the axis of 13:

(1) Please refer to Fig. 11A and Fig. 11B, in a specific embodiment, the driving wheel 13 is on the upper side of the track 50, and the driven wheel 15 is on the lower side of the track 50; connected, the other end is assembled with the passive wheel 15; one end of the elastic member 16 is connected to the link member 14 through the second hinge 161, and the other end is connected to the connecting plate 11 through the third hinge 162; the second hinge 161 is not connected to the first hinge 144 overlap, can be set in the middle of the connecting rod 14 (first position 141), the position coincident with the installation position of the rotating shaft of the driven wheel 15 (second position 142) and the other end of the connecting rod 14 (third position 143 ) in any position; the third hinge 162 is disposed on the lower side of the first hinge 144 . At this time, since the elastic members 16 on both sides of the axis of the driving wheel 13 are in a compressed state, the elastic members 16 on both sides will respectively apply thrust to the two link members 14 to make the driven wheels 15 on both sides cling to the track 50 .

(2) Please refer to FIG. 12A and FIG. 12B. In a specific embodiment, the driving wheel 13 is on the upper side of the track 50, and the driven wheel 15 is on the lower side of the track 50; connected, the other end is assembled with the passive wheel 15; one end of the elastic member 16 is connected to the link member 14 through the second hinge 161, and the other end is connected to the connecting plate 11 through the third hinge 162; the second hinge 161 is not connected to the first hinge 144 overlap, can be set in the middle of the connecting rod 14 (first position 141), the position coincident with the installation position of the rotating shaft of the driven wheel 15 (second position 142) and the other end of the connecting rod 14 (third position 143 ) in any position; the third hinge 162 is disposed on the upper side of the first hinge 144 . At this time, because the elastic members 16 on both sides of the axis of the driving wheel 13 are in a stretched state, the elastic members 16 on both sides will respectively apply tension to the two connecting rods 14 so that the driven wheels 15 on both sides are close to the track 50 .

(3) Please refer to Fig. 13A and Fig. 13B. In a specific embodiment, the driving wheel 13 is on the lower side of the track 50, and the driven wheel 15 is on the upper side of the track 50; connected, the other end is assembled with the passive wheel 15; one end of the elastic member 16 is connected to the link member 14 through the second hinge 161, and the other end is connected to the connecting plate 11 through the third hinge 162; the second hinge 161 is not connected to the first hinge 144 overlap, can be set in the middle of the connecting rod 14 (first position 141), the position coincident with the installation position of the rotating shaft of the driven wheel 15 (second position 142) and the other end of the connecting rod 14 (third position 143 ) in any position; the third hinge 162 is disposed on the lower side of the first hinge 144 . At this time, because the elastic members 16 on both sides of the axis of the driving wheel 13 are in a stretched state, the elastic members 16 on both sides will respectively apply tension to the two connecting rods 14 so that the driven wheels 15 on both sides are close to the track 50 .

(4) Please refer to Fig. 14A and Fig. 14B. In a specific embodiment, the driving wheel 13 is on the lower side of the track 50, and the driven wheel 15 is on the upper side of the track 50; connected, the other end is assembled with the passive wheel 15; one end of the elastic member 16 is connected to the link member 14 through the second hinge 161, and the other end is connected to the connecting plate 11 through the third hinge 162; the second hinge 161 is not connected to the first hinge 144 overlap, can be set in the middle of the connecting rod 14 (first position 141), the position coincident with the installation position of the rotating shaft of the driven wheel 15 (second position 142) and the other end of the connecting rod 14 (third position 143 ) in any position; the third hinge 162 is disposed on the upper side of the first hinge 144 . At this time, since the elastic members 16 on both sides of the axis of the driving wheel 13 are in a compressed state, the elastic members 16 on both sides will respectively apply thrust to the two link members 14 to make the driven wheels 15 on both sides cling to the track 50 .

It should be noted that in practical applications, as long as the rail car can realize the functions of anti-rollover and easy disassembly at the same time, the assembly of the two wheel trains can be inconsistent, and the driving wheel and the passive wheel under the two wheel trains The positional relationship with respect to the track can be different, specifically, the connection relationship between the elastic members under the two wheel trains can be different, for example, the first wheel train can be as shown in Figure 11A and Figure 11B, and the second wheel train can be as shown in Figure 12A As shown in Fig. 12B; preferably, the assembly of the two wheel trains is consistent, and the driving wheels under the two wheel trains are located on the upper side of the track.

The above embodiments are only used to illustrate the technical solution of the present application, not to limit it.

Claims

A track trolley, characterized in that it includes two wheel trains and an intermediate connecting portion, and the two wheel trains are relatively installed on both sides of the intermediate connecting portion;

The wheel train includes a connecting plate, a power module, a driving wheel, two connecting rods, two sets of driven wheels and two sets of elastic elements;

The connection plate is connected to the intermediate connection part;

The power module is fixedly installed on the connecting plate, and the output shaft of the power module is fixedly installed on the driving wheel;

The two connecting rods are respectively arranged on both sides of the axis of the driving wheel, and one end of each connecting rod is rotatably connected to the connecting plate, and the other end is fixedly installed with a set of driven wheels;

The driving wheel is provided with a groove for constraining the track, and each set of driven wheels is provided with a groove for constraining the track; a set of elastic springs is respectively installed between the connecting plate and each of the connecting rods. The groove of the driving wheel is constrained to one side of the track under the action of the two sets of elastic elements, and the grooves of the two sets of driven wheels are respectively constrained to one side of the track under the action of a set of elastic elements. the other side of the track.
The track trolley according to claim 1, characterized in that first connecting ears are respectively provided at both ends of the intermediate connecting part;

Each of the connecting plates is provided with a second connecting ear;

The first connecting ear and the second connecting ear are installed with a fixing member so that the intermediate connecting portion is fixedly connected to the connecting plate.
The track trolley according to claim 1, further comprising a hinge and a locking structure cooperating with the hinge;

Both ends of the intermediate connecting portion are respectively provided with first connecting ears; each of the connecting plates is provided with second connecting ears;

The first connecting ear and the second connecting ear are installed with the hinge so that the intermediate connecting part is hingedly connected to the connecting plate;

The locking structure is used to fix the angle formed by the connection between the connecting plate and the intermediate connecting portion through the hinge connection.
The track trolley according to claim 3, wherein the first connecting ear is provided with an arc-shaped limiting groove matched with the hinge, and the arc-shaped limiting groove is used to limit the connecting plate to The hinge is a rotation angle for the shaft to rotate relative to the intermediate connecting portion.
The track trolley according to claim 4, wherein the locking structure comprises an insert and a locking member;

The first connecting ear is connected to the second connecting ear through the insert;

If the locking member does not lock the inserter, the inserter can slide in the arc-shaped limiting groove; if the locking member locks the inserter, the inserter is locked in the arc A position in the shape limit slot.
The track trolley according to claim 1, wherein one end of the connecting rod is connected to the connecting plate through a first hinge, and the other end is fixedly assembled with a set of driven wheels through pin shafts and bearings.
The trolley according to claim 6, wherein one end of the elastic member is connected to the connecting rod through a second hinge, and the other end is connected to the connecting plate through a third hinge;

The installation positions of the second hinge and the third hinge do not coincide with the installation positions of the first hinge.
The track trolley according to claim 7, wherein the second hinge is installed at one or more of the first position, the second position and the third position of the connecting rod;

Wherein, the first position is the middle part of the connecting rod, the second position is coincident with the installation position of the rotating shaft of the driven wheel, and the third position is the other end of the connecting rod .
The track trolley according to claim 7, wherein the third hinge is mounted on the top or bottom of the connecting plate.
The track trolley according to claim 7, wherein when the installation position of the third hinge is lower than the installation position of the first hinge, the driving wheel is constrained by the thrust of the two sets of elastic members. On the high side of the track, the grooves of the two sets of driven wheels are respectively constrained to the low side of the track by the pushing force of a set of elastic members.
The track trolley according to claim 7, wherein when the installation position of the third hinge is higher than the installation position of the first hinge, the driving wheel is constrained by the pulling force of the two sets of elastic members On the high side of the track, the grooves of the two sets of driven wheels are respectively constrained to the low side of the track under the pulling force of a set of elastic members.
The track trolley according to claim 7, wherein when the installation position of the third hinge is lower than the installation position of the first hinge, the groove of the driving wheel will be under the tension of the two sets of elastic members. The grooves of the two groups of driven wheels are respectively constrained to the high side of the rail under the tension of one group of elastic members.
The track trolley according to claim 7, wherein when the installation position of the third hinge is higher than the installation position of the first hinge, the groove of the driving wheel will The grooves of the two sets of driven wheels are respectively bound to the high side of the track under the push force of a set of elastic members.