CN107697768B

CN107697768B - Energy-saving elevator for crossing street

Info

Publication number: CN107697768B
Application number: CN201710982613.3A
Authority: CN
Inventors: 黄灿军; 罗桂城; 秦晓阳; 李日森
Original assignee: Guangdong Polytechnic Of Water Resources And Electric Engineering
Current assignee: Guangdong Polytechnic Of Water Resources And Electric Engineering
Priority date: 2017-10-19
Filing date: 2017-10-19
Publication date: 2024-04-02
Anticipated expiration: 2037-10-19
Also published as: CN107697768A

Abstract

The invention relates to an energy-saving elevator for crossing a street, which comprises a traction mechanism, an overground upper guide rail, an overground box mechanism, an underground upper guide rail and an underground box mechanism, wherein the overground upper guide rail is provided with an overground guide groove and an overground belt guide groove, the overground box mechanism comprises an overground box body, an overground cross beam and an overground rolling wheel, the underground upper guide rail is provided with an underground guide groove and an underground belt guide groove, the underground box mechanism comprises an underground box body, an underground cross beam and an underground rolling wheel, the traction mechanism comprises a motor, a synchronous pulley and a synchronous belt, the synchronous belt is connected with the overground cross beam and the underground cross beam, the synchronous belt is placed in the overground belt guide groove and the underground belt guide groove, the synchronous belt drags the overground box body to move along the overground guide groove, and the underground box body to move along the underground guide groove. According to the invention, the two boxes are connected together to move through the synchronous traction belt, so that the ascending stroke of one box just corresponds to the descending stroke of the other box, and the energy consumption is greatly reduced.

Description

Energy-saving elevator for crossing street

Technical Field

The invention relates to the technical field of elevators, in particular to an energy-saving elevator for crossing a street.

Background

Although the relative range of the pedestrian crossing is small and the distance is short, the traffic accident is very easy to be caused because the route of the pedestrian crossing just crosses and overlaps with the traffic streamline of the motor vehicle, and the pedestrian death accident caused by the pedestrian crossing the traffic lane is more than 90% of the pedestrian death accident according to statistics. Therefore, on the main road or the expressway of some cities, the pedestrian crossing road and the motor vehicle lane are mutually isolated by building three-dimensional crossing facilities such as pedestrian overpasses, crossing underground passages and the like, so that the pedestrian crossing safety is protected and the motor vehicle passing speed is improved. However, the three-dimensional street crossing facilities such as a pedestrian overpass and a street crossing underground passage increase the distance and time of crossing the street, reduce the comfort of crossing the street by the pedestrians, lead to that partial people abandon the facilities without using the facilities, bring greater danger by adopting a way of crossing the street crossing forced by a road and the like by crossing guardrails, and bring great street crossing burden to special crowds such as weak bodies, inconvenient actions and the like or pedestrians carrying large pieces of luggage, thereby being a way of crossing the street by the pedestrians which is lack of humanization. Full-escalator overpass has been built in some cities to improve the comfort of pedestrian crossing, but the street crossing facilities have larger electric energy consumption in daily use and higher use cost, and cannot be widely popularized and applied. Therefore, it is necessary to develop a safe, efficient and energy-saving pedestrian crossing device, which improves the use wish of people and reduces the behavior of people crossing roads.

Disclosure of Invention

In order to solve the problems existing in the pedestrian crossing, the invention provides an energy-saving elevator which is energy-saving, safe and efficient.

In order to achieve the above-mentioned aim, the invention provides an energy-saving elevator for crossing street, which is characterized by comprising a traction mechanism, an overground upper guide rail, an overground box mechanism, an underground upper guide rail and an underground box mechanism, wherein the overground upper guide rail is provided with overground guide grooves extending along a U shape, the U-shaped opening of the overground guide grooves is downward, the overground box mechanism comprises an overground box body, overground cross beams arranged on the overground box body and overground rolling wheels arranged on the overground cross beams, the overground rolling wheels can be arranged in the overground guide grooves in a rolling way, the underground upper guide rail is arranged below the overground upper guide rail, the underground upper guide rail is provided with underground guide grooves extending along the U shape, the U-shaped opening of the underground guide grooves is upward, the underground box mechanism comprises an underground box body, underground cross beams arranged on the underground box body and underground rolling wheels arranged on the underground cross beams, the underground rolling wheels are arranged in the underground guide grooves and can roll back and forth along the underground guide grooves, the traction mechanism comprises a motor, a synchronous pulley and a synchronous belt, the synchronous belt is connected with the overground cross beam and the underground cross beam, overground upper guide rails are provided with overground belt guide grooves, the overground belt guide grooves are consistent with the overground guide grooves in extending direction, the underground upper guide rails are provided with underground belt guide grooves, the underground belt guide grooves are consistent with the underground guide grooves in extending direction, the synchronous belt is placed in the overground belt guide grooves and the underground belt guide grooves, the synchronous belt is used for traction of the overground box body to move along the overground guide grooves, and traction of the underground box body to move along the underground guide grooves, and when the overground box body moves to the right end of the overground upper guide rails, the underground box body moves to the left end of the underground upper guide rails.

According to the street-crossing energy-saving elevator provided by the invention, through the design of the two groups of tracks and the boxes which are positioned on the ground and underground and the synchronous traction belt, the two boxes are connected to move together, so that the ascending stroke of one box just corresponds to the descending stroke of the other box, and the gravity of the descending stroke box and the pedestrian just provides driving force for the ascending stroke box and the pedestrian in the elevator operation process, thereby greatly reducing energy consumption. The starting point and the end point of the ground box body and the underground box body are on the road surface, people can go in and out of the elevator on the road surface, and people do not need to go up and down stairs, so that the elevator is very convenient. The descending trend of the U-shaped track is slow, free falling stroke is avoided, and the operation is safe.

Drawings

Fig. 1 is a schematic structural view of an energy-saving elevator for street crossing;

FIG. 2 is a schematic view of the structure of the above-ground tank mechanism;

FIG. 3 is an enlarged view of the partial structure A of FIG. 2;

FIG. 4 is an enlarged view of the partial structure B of FIG. 2;

fig. 5 is another schematic structural view of an energy-saving elevator for street crossing;

FIG. 6 is an enlarged view of the partial structure of C of FIG. 5;

FIG. 7 is an enlarged view of the partial structure of D of FIG. 5;

fig. 8 is a schematic drawing of the traction mechanism.

The invention is described in further detail below with reference to the accompanying drawings.

Detailed Description

Referring to fig. 1, the energy-saving elevator for crossing the street comprises two upper ground guide rails 1 arranged on the ground, wherein the two upper ground guide rails 1 are arranged in parallel at the same height position on the ground. The overall shape of the overground upper guide rail 1 is U-shaped, and the U opening is downward. Referring to fig. 2 and 3, the above-ground upper rail 1 is provided with an above-ground guide groove 11 extending along a U-shape, the shape of the above-ground guide groove 11 is consistent with the U-shape of the above-ground upper rail 1, and the U-shape of the above-ground guide groove opens downward. The above-ground rail 1 includes an above-ground guide bar 12 and an above-ground guide bar 13 arranged in the up-down direction, respectively, the above-ground guide bar 13 being directly below the above-ground guide bar 12, and the above-ground guide bar 13 and the above-ground guide bar 12 being connected at both end portions. Grooves are formed on the inner sides of the upper and lower ground guide strips 12 and 13, and the two grooves together form the upper and lower ground guide grooves 11. The ground belt guide grooves 14 are arranged on the ground and lower guide strips 13, and the extending directions of the ground belt guide grooves 14 and the ground guide grooves 11 are consistent, and the ground belt guide grooves extend along the U shape, and are also integrally U-shaped. A plurality of ground rollers 15 are mounted on the inner side of the ground tape guide groove 14 in the extending direction thereof.

Referring to fig. 1, one up-down rail 2 is disposed below each of two up-down rails 1, and the two up-down rails 2 are disposed in parallel at the same height below the up-down rail 1 above the ground. The overall shape of the upper and lower guide rails 2 is U-shaped, and the U-shaped opening is downward. Referring to fig. 2 and 4, the upper and lower rails 2 are also provided with an upper and lower guide groove 21 extending along a U-shape, the upper and lower guide groove 21 is shaped to conform to the U-shape of the upper and lower rails 2, and the U-shape of the upper and lower guide groove 21 opens downward. The up-down guide rail 2 also includes a second up-down guide bar 22 and a second up-down guide bar 23 which are arranged in the up-down direction, respectively, the second up-down guide bar 23 being below the second up-down guide bar 22, the second up-down guide bar 23 and the second up-down guide bar 22 being connected at both end portions. Grooves are formed in the inner sides of the second upper and lower ground guide strips 22 and 23, and the two grooves jointly form the second upper ground guide groove 21. The above-ground and below-ground rail 2 has the same structure as the above-ground rail 1 except that the above-ground belt guide groove 14 and the above-ground rollers 15 are not provided. The above-ground rail 1 and the above-ground rail 2 cross from one side of the road to the other side of the road on the ground.

Referring to fig. 1, 5 and 6, two underground upper rails 4 are disposed in parallel at the same height, under the above-ground upper rail 1 and the above-ground lower rail 2, and under the ground, both ends thereof protrude from the ground. The whole shape of the underground upper guide rail 4 is U-shaped, and the U-shaped opening is upward. The underground upper rail 4 is provided with an underground guide groove 41 extending along the U shape, the shape of the underground guide groove 41 is consistent with the U shape of the underground upper rail 4, and the U-shaped opening of the underground guide groove 41 is upward. The underground upper rail 4 includes an underground upper guide bar 42 and an underground lower guide bar 43 arranged in the up-down direction, respectively, the underground lower guide bar 43 being directly below the underground upper guide bar 42, the underground lower guide bar 43 and the underground upper guide bar 42 being connected at both ends. Grooves are formed on the inner sides of the underground upper guide bar 42 and the underground lower guide bar 43, and the two grooves together form the underground guide groove 41. The underground upper guide strip 42 is provided with an underground belt guide groove 44, and the underground belt guide groove 44 and the underground guide groove 41 are consistent in extending direction, extend along a U shape and are also integrally U-shaped. A plurality of underground rollers 45 are installed inside the underground belt guide groove 44 in the extending direction thereof. The shape and structure of the underground upper rail 4 are the same as those of the above-ground upper rail 1, except that the installation directions of the two are opposite, the U-shaped opening of the former is upward, and the U-shaped opening of the latter is downward.

Referring to fig. 1, one underground lower rail 5 is disposed below each of the two underground upper rails 4, and the two underground lower rails 5 are disposed in parallel at the same height below the underground upper rails 4. The whole shape of the underground lower guide rail 5 is U-shaped, and the U opening is upward. Referring to fig. 5 and 7, the underground guide rail 5 is provided with a second underground guide groove 51 extending along the U-shape, the shape of the second underground guide groove 51 is consistent with the U-shape of the underground guide rail 5, and the U-shape opening of the second underground guide groove 51 is upward. The underground lower rail 5 also includes an underground upper guide bar two 52 and an underground lower guide bar two 53 arranged in the up-down direction, respectively, the underground lower guide bar two 53 being below the underground upper guide bar two 52, the underground lower guide bar two 53 and the underground upper guide bar two 52 being connected at both end portions. Grooves are formed on the inner sides of the underground upper guide strip II 52 and the underground lower guide strip II 53, and the two grooves jointly form the underground guide groove II 51. The underground lower rail 5 has the same structure as the underground upper rail 4 except that the underground belt guide grooves 44 and the underground rollers 45 are not provided in the underground upper rail 4. The shape and structure of the underground lower rail 5 are the same as those of the underground lower rail 2, except that the installation directions of the underground lower rail and the underground lower rail are opposite, the U-shaped opening of the underground lower rail is upward, and the U-shaped opening of the underground lower rail is downward. The underground upper rail 4 and the underground lower rail 5 pass from the ground under the road to the other side of the road.

The above-ground upper rail 1, the above-ground lower rail 2, the below-ground upper rail 4, and the below-ground lower rail 5 are each arranged along a vertical plane. The U-shaped openings of the overground upper guide rail 1 and the overground lower guide rail 2 are downward, one overground lower guide rail 2 is right below one overground upper guide rail 1, the two guide rails are on the same side, the other overground lower guide rail 2 is right below the other overground upper guide rail 1, the two guide rails are on the other side, the vertical distances between the overground upper guide rail 1 and the overground lower guide rail 2 on the same side are equal everywhere, and the overground box 31 is ensured to keep the bottom horizontal all the time during the movement. The U-shaped openings of the underground upper guide rail 4 and the underground lower guide rail 5 are upward, one underground lower guide rail 5 is right below one underground upper guide rail 4, the two guide rails are on the same side, the other underground lower guide rail 5 is right below the other underground upper guide rail 4, the two guide rails are on the other side, the vertical distances between the underground upper guide rail 4 and the underground lower guide rail 5 on the same side are equal everywhere, and the bottom of the underground box 61 is ensured to be kept horizontal all the time in the moving process. The ground box 31 and the underground box 61 are supported by adopting the upper guide rail and the lower guide rail, so that the stable support of the box and the stable and smooth sliding of the box can be realized, and meanwhile, the structure is simple, the weight is light, and the energy is saved. The guide rails may be in other structural forms, the number of the guide rails supporting each box body is not limited to four, and other arrangement modes can be adopted among the guide rails, so long as the box bodies can be supported and guided to move.

Referring to fig. 1, the belt guide groove 44 on the upper rail 4 is located right under the belt guide groove 14 on the upper rail 1 on the same side, and both are located on the same vertical plane, and the timing belt 72 is placed in the two belt guide grooves 14 and the belt guide groove 44 to ensure that the timing belt 72 is located on the same vertical plane, so as to facilitate the synchronous movement of the above-ground box 31 and the below-ground box 61

Referring to fig. 1, 2 and 3, the above-ground box mechanism includes an above-ground box 31, an above-ground cross beam 32 and an above-ground rolling wheel 33. The ground beam 32 is disposed above the ground box 31, and two ends of the ground beam are respectively provided with a ground rolling wheel 33, and the ground rolling wheels 33 can rotate relative to the ground beam 32. The ground box 31 is further provided with two ground rolling wheels 34 at the upper position of the middle part of the ground box 31, and the ground rolling wheels 34 are arranged below the ground rolling wheels 33 and can rotate relative to the ground box 31. One ground roll wheel 33 and one ground roll wheel two 34 are on the left side of the ground box 31, and the other ground roll wheel 33 and the other ground roll wheel two 34 are on the right side of the ground box 31. The two ground rolling wheels 33 are respectively arranged in one ground guide groove 11 in a rolling way, the two ground rolling wheels 34 are respectively arranged in one ground guide groove 21 in a rolling way, the ground rolling wheels 33 and the two ground rolling wheels 34 are respectively limited in the ground guide groove 11 and the two ground guide grooves 21 and can respectively roll back and forth along the ground guide groove 11 and the two ground guide grooves 21, but the two ground rolling wheels are not laterally moved to be separated from the ground guide groove 11 and the two ground guide grooves 21.

Referring to fig. 5 to 7, the underground cabinet mechanism includes an underground cabinet 61, an underground cross beam 62, and an underground rolling wheel 63. Two underground cross beams 62 extend from the outer side walls of the underground cabinet 61 at a position below the middle of the underground cabinet 61, and underground rolling wheels 63 are provided at the outer ends of the underground cross beams 62 so as to be rotatable relative to the underground cross beams 62. The underground cabinet 61 is provided with a bottom cross beam 65 below the underground cabinet, and two underground rolling wheels 64 are respectively arranged at two ends of the bottom cross beam 65. One ground roll wheel 63 and one ground roll wheel two 64 are on the left side of the ground box 61, and the other ground roll wheel 63 and the other ground roll wheel two 64 are on the right side of the ground box 61. Two underground rolling wheels 63 are respectively arranged in one underground guide groove 41 in a rolling way, and two underground rolling wheels 64 are respectively arranged in one underground guide groove two 51 in a rolling way.

Referring to fig. 8, the traction mechanism includes a motor 73, a coupling 8, a timing pulley 71, and a timing belt 72. The coupling 8 couples the output shaft of the motor 73 and the shaft of the timing pulley 71. Referring to fig. 3, the timing belt 72 is connected to the ground beam 32. Referring to fig. 6, a timing belt 72 is connected to the underground beam 62. Referring to fig. 1, a timing pulley 71 is provided between the above-ground upper rail 1 and the below-ground upper rail 4, and near the end portions on the same side of the above-ground upper rail 1 and the below-ground upper rail 4. Referring to fig. 3 and 6, the timing belt 72 is provided in the above-floor belt guide groove 14 of the above-floor upper rail 1 and in the below-floor belt guide groove 44 of the below-floor upper rail 4. The motor 73 drives the synchronous pulley 71 to rotate, and the synchronous pulley 71 drives the synchronous belt 72 to move along the above-ground belt guide groove 14 and the underground belt guide groove 44, and the synchronous belt 72 drives the above-ground box 31 to synchronously move along the above-ground guide groove 11 and the underground box 61 along the underground guide groove 41. Referring to fig. 3, the inner side of the above-ground belt guide groove 14 is mounted with a plurality of above-ground rollers 15 in the extending direction thereof, and the timing belt 72 is pressed against the above-ground rollers 15 above the above-ground rollers 15. Referring to fig. 6, a plurality of underground rollers 45 are installed inside the underground belt guide groove 44 in the extending direction thereof, and the timing belt 72 is pressed against the underground rollers 45 under the underground rollers 45. The synchronous belt 72 keeps in contact with the ground roller 15 and the underground roller 45 in the moving process, the sliding friction is changed into rolling friction, the consumption of friction force is reduced, and the movement is smoother.

Referring to fig. 1, the ground upper rail 1 is provided at both ends thereof with a ground position detecting mechanism and a ground locking mechanism 91, and when the ground position detecting mechanism detects that the ground box 31 moves to the end of the ground upper rail 1 along the ground upper rail 1, the ground locking mechanism 91 locks the ground rolling wheel 33 to stop the ground rolling wheel 33 thereat. The underground upper rail 4 is provided with an underground position detecting mechanism and an underground lock mechanism 92 at both ends thereof, and when the underground cabinet 61 moves in a certain direction along the underground upper rail 4, the underground lock mechanism 92 locks the underground rolling wheel 63 to stop the underground rolling wheel 63 at the position when the underground position detecting mechanism detects that the underground cabinet 61 moves to the end of the underground upper rail 4. The above-ground position detecting means and the below-ground position detecting means may be travel switches. Because the above-ground rolling wheel 33 and the below-ground rolling wheel 63 are locked only by one, the timing belt 72 stops moving, so that only one of the above-ground position detecting mechanism and the above-ground locking mechanism, and both of the below-ground position detecting mechanism and the below-ground locking mechanism may be provided, or both may be provided, and the other may be provided to make the above-ground box and the below-ground box stop more smoothly. Conductive strips are also mounted on the overground upper rail 1 and the underground upper rail 4 to provide power for illumination, ventilation and the like of the overground box 31 and the underground box 61.

The outer wall 100 is used for isolating the movable part of the elevator from pedestrians and protecting the pedestrians, and an automatic switch door 101 is arranged on the outer wall 100 and corresponds to the automatic switch door 36 of the ground box 31 and the automatic switch door 66 of the underground box 61, so that the pedestrians can enter and exit the ground box and the underground box.

Referring to fig. 1, when the ground casing 31 is at the right end of the ground upper rail 1, the underground casing 61 is at the left end of the underground upper rail 4, and the ground casing 31 and the underground casing 61 are located on both sides of the road, respectively. When a pedestrian needs to cross a road, the door opening button of the elevator is pressed, the automatic opening and closing doors 101, 36 and 66 are opened, the pedestrian can enter the overground box body 31 or the underground box body 61, the automatic opening and closing doors 101, 36 and 66 are forced to be closed after delayed, the overground locking mechanism 91 and the underground locking mechanism 92 are simultaneously released by sending signals after the automatic opening and closing doors 101, 36 and 66 are completely closed, the motor 73 is started, and the overground box body 31 and the underground box body 261 are driven to move by traction of the synchronous belt 72. Since the ascending travel of the above-ground tank body 31 is just the descending travel of the underground tank body 61, and the descending travel of the above-ground tank body 31 is just the ascending travel of the underground tank body 61, the above-ground tank body and the underground tank body are connected together through the traction synchronous belt 72 to operate, so that the gravity of the tank body with the descending travel and the gravity of the pedestrian in the elevator operation process just provide driving force for the tank body with the ascending travel and the pedestrian, and the energy consumption is greatly reduced. When the above-ground box 31 and the underground box 61 reach the left end of the above-ground upper rail 1 and the right end of the underground upper rail 4 simultaneously, respectively, the above-ground locking mechanism 91 and the underground locking mechanism 92 lock and fix the above-ground box 31 and the underground box 61, respectively, automatically open and close the doors 101, 36 and 66, open and allow the pedestrians to go out and in, and repeat the above-mentioned processes to transport the pedestrians who need to pass through the road to the other side.

According to the invention, through the design of the two groups of rails and the box bodies which are positioned on the ground and underground and the synchronous traction belt, the two box bodies are connected to move together, so that the ascending stroke of one box body just corresponds to the descending stroke of the other box body, and the gravity of the box body and the pedestrian in the descending stroke in the running process of the elevator just provides driving force for the box body and the pedestrian in the ascending stroke, thereby greatly reducing energy consumption. Compared with the existing pedestrian overpass or tunnel, the elevator automatically conveys pedestrians to the other side of the road in the whole process, particularly provides a fast and convenient road passing way for special crowds such as weak bodies and inconvenient actions or pedestrians carrying large pieces of luggage, saves the physical power of the pedestrians, and can attract the pedestrians to ride on the elevator to pass through the road, thereby effectively reducing the traffic hidden trouble caused by the fact that the pedestrians cross the road in disorder; if the elevator is further adopted to replace the pedestrian crossing zebra crossing of the existing road, the red light running behavior of pedestrians can be avoided, the vehicle waiting time caused by the crossing of the road by the pedestrians is reduced, and the elevator plays a positive role in relieving road traffic.

Claims

1. An energy-saving elevator for crossing a street is characterized by comprising a traction mechanism, an overground upper guide rail (1), an overground box mechanism, an underground upper guide rail (4) and an underground box mechanism, wherein the overground upper guide rail (1) is provided with an overground guide groove (11) extending along a U shape, the U-shaped opening of the overground guide groove (11) is downward, the overground box mechanism comprises an overground box (31), an overground cross beam (32) arranged on the overground box and an overground rolling wheel (33) arranged on the overground cross beam, the overground rolling wheel (33) can be arranged in the overground guide groove (11) in a rolling way, the underground upper guide rail (4) is arranged below the overground upper guide rail (1), the underground upper guide rail (41) is provided with an underground guide groove (41) extending along the U shape, the U-shaped opening of the underground guide groove (41) is upward, the underground box mechanism comprises an underground box (61), an underground cross beam (62) on the underground box and an underground rolling wheel (63) arranged on the underground cross beam, the underground rolling wheel (63) is arranged in the underground guide groove (41) and can roll along the underground guide groove, the underground guide groove (41) comprises a synchronous pulley (73), the traction pulley (62) and an overground rolling wheel (72) are arranged on the overground cross beam (72), and the overground guide rail (1) is connected with the overground guide rail (72), the ground belt guide groove (14) is consistent with the extending direction of the ground guide groove (11), the underground upper guide rail (4) is provided with an underground belt guide groove (44), the underground belt guide groove (44) is consistent with the extending direction of the underground guide groove (41), the synchronous belt (72) is placed in the ground belt guide groove (14) and the underground belt guide groove (44), the synchronous belt (72) pulls the ground upper box body (31) to move along the ground guide groove (11), pulls the underground box body (61) to move along the underground guide groove (41), and when the ground box body (31) moves the right end of the ground upper guide rail (1), the underground box body (61) moves to the left end of the underground upper guide rail (4).

2. The energy-saving elevator for street crossing according to claim 1, wherein the above-ground upper rail (1) is provided with an above-ground position detecting mechanism and an above-ground locking mechanism (91) at both ends, and when the above-ground position detecting mechanism detects that the above-ground box body (31) moves to the end of the above-ground upper rail (1), the above-ground locking mechanism (91) locks the above-ground rolling wheel (33), or the underground upper rail (4) is provided with an underground position detecting mechanism and an underground locking mechanism (92) at both ends, and when the underground position detecting mechanism detects that the underground box body (61) moves to the end of the underground upper rail (4), the underground locking mechanism (92) locks the underground rolling wheel (63).

3. The energy-saving elevator for street crossing according to claim 1, characterized in that a plurality of ground rollers (15) are mounted inside the ground belt guide groove (14) of the ground upper rail (1) along the extending direction thereof, a plurality of underground rollers (45) are mounted inside the underground belt guide groove (44) of the underground upper rail (4) along the extending direction thereof, and the synchronous belt (72) is pressed against the ground rollers (15) above the ground rollers (15) and against the underground rollers below the underground rollers (45).

4. An energy-saving elevator according to claim 3, characterized in that the number of the above-ground upper guide rails (1) is two, and further comprising two above-ground lower guide rails (2) below the above-ground upper guide rails (1), the above-ground lower guide rails (2) are provided with an above-ground guide groove two (21) extending along a U shape, the above-ground box (31) is provided with two above-ground rolling wheels (33), and two above-ground rolling wheels (34) are provided below the above-ground rolling wheels (33), the two above-ground rolling wheels (33) are respectively arranged in one above-ground guide groove (11) in a back-and-forth rolling manner, and the two above-ground rolling wheels (34) are respectively arranged in one above-ground guide groove two (21) in a back-and-forth rolling manner.

5. The energy-saving elevator for street crossing according to claim 4, wherein the number of the underground upper guide rails (4) is two, the elevator further comprises two underground lower guide rails (5) below the underground upper guide rails (4), the underground lower guide rails (5) are provided with two underground guide grooves (51) extending along a U shape, the underground box (61) is provided with two underground rolling wheels (63), and two underground rolling wheels (64) are arranged below the underground rolling wheels (63), the two underground rolling wheels (63) are respectively arranged in one underground guide groove (41) in a back-and-forth rolling manner, and the two underground rolling wheels (64) are respectively arranged in one underground guide groove (51) in a back-and-forth rolling manner.

6. The energy-saving elevator for street crossing according to claim 5, characterized in that the two above-ground upper guide rails (1) are arranged in parallel at the same height, the two above-ground lower guide rails (2) are arranged in parallel at the same height, the two below-ground upper guide rails (4) are arranged in parallel at the same height, and the two below-ground guide rails (5) are arranged in parallel at the same height.

7. The energy-saving elevator for street crossing according to claim 6, wherein the ground beam (32) is disposed above the ground box (31), the two ground rolling wheels (33) are disposed at two ends of the ground beam, respectively, the two ground rolling wheels (34) are disposed at the upper middle of the ground box (31), one ground rolling wheel (33) and one ground rolling wheel (34) are disposed at the left side of the ground box (31), and the other ground rolling wheel (33) and the other ground rolling wheel (34) are disposed at the right side of the ground box.

8. The energy-saving elevator for street crossing according to claim 7, wherein the underground beam (62) is disposed at a position below the middle of the underground cabinet (61), the underground cabinet (61) is provided with a bottom beam (65) below the underground cabinet, two underground rolling wheels (64) are respectively disposed at two ends of the bottom beam (65), one underground rolling wheel (63) and one underground rolling wheel (64) are disposed at the left side of the underground cabinet (61), and the other underground rolling wheel (63) and the other underground rolling wheel (64) are disposed at the right side of the underground cabinet (61).

9. The energy-saving elevator for crossing street according to claim 8, characterized in that the shape of the above-ground upper rail (1), the above-ground lower rail (2), the below-ground upper rail (4) and the below-ground lower rail (5) is U-shaped.

10. The energy-saving elevator according to claim 9, characterized in that the above-ground upper rail (1) has the same structure as the underground upper rail (4), and the above-ground lower rail (2) has the same structure as the underground lower rail (5).