A safe and energy-saving construction elevator

Abstract

The present invention belongs to the field of construction elevators, specifically a safe and energy-saving construction elevator, comprising an elevator body; the front end of the elevator body is meshed and connected with the rear end of a cage, and a door closing protection mechanism is arranged inside the cage; the door closing protection mechanism comprises a motor, the motor is arranged at a position close to the upper side of the left end of the cage, and the motor is fixedly connected to the cage, the right end of the motor passes through the left end of the cage to reach the inside of the cage, and the right end of the motor is fixedly connected to the left end of a winding roller; through the design of the door closing protection mechanism, the function of automatically closing the door and performing protection is realized, which solves the problem that the existing device does not provide the cage with a function that can facilitate door closing and play a protective role at the same time. Since the cage usually carries staff and goods, it is very easy for staff to lean on the cage door when in use, and when the cage door is not closed in place, it is very easy to cause danger, thereby improving the protection of the staff.

Description

Technical Field

[0001] The invention relates to the field of construction elevators, in particular to a safe and energy-saving construction elevator. Background Art

[0002] Construction elevators are mainly used in various types of high-rise and super-high-rise buildings in cities. Because such building heights are very difficult to complete operations using crisscross frames and gantry frames, they are manned and cargo-carrying construction machinery frequently used in construction. They are mainly used for interior and exterior decoration of high-rise buildings, construction of bridges, chimneys and other buildings.

[0003] A construction elevator with announcement number CN202020715074.4 comprises a main frame standard section, the main frame standard section comprises an inner standard section and an outer standard section, the inner standard section is installed inside the outer standard section, the inner walls at both ends of the outer standard section are provided with limiting grooves, the two ends of the inner standard section are inserted into the limiting grooves, the two side surfaces of the inner standard section are provided with pressing grooves, and one side of the outer standard section is screwed with a knob screw; the utility model provides a construction elevator, through the designed inner standard section and outer standard section, the inner standard section and the outer standard section are spliced ​​and installed through limiting grooves, pressing plates and pressing grooves, and the outer standard section and the inner standard section are fixedly installed at the connection between the inner standard sections and the outer standard sections, respectively, so as to strengthen the connection between the inner standard sections and the outer standard sections, so that the main frame standard section is fixed more stably when in use, and solves the problem of unstable fixation of the main frame standard section after long-term use, which leads to danger; The above-mentioned device does not have a structure for facilitating closing the cage door. Since the cage usually carries workers and goods, it is very easy for workers to lean against the cage door when in use. At this time, if the cage door is not closed properly, dangerous situations are very likely to occur. Therefore, a safe and energy-saving construction elevator is proposed to address the above problem. Summary of the invention

[0004] In order to solve the problem that the existing devices do not have a structure for facilitating the closing of the cage door, since the cage usually carries workers and goods, it is very easy for workers to lean on the cage door during use. At this time, if the cage door is not closed properly, it is very easy to cause a dangerous situation. The present invention proposes a safe and energy-saving construction elevator.

[0005] The technical solution adopted by the present invention to solve the technical problem is: the safe and energy-saving construction elevator described in the present invention comprises an elevator body; the front end of the elevator body is meshed and connected with the rear end of the cage, and a door protection mechanism is arranged inside the cage; The door closing protection mechanism includes a motor, which is arranged at a position near the top of the left end of the cage, and the motor is fixedly connected to the cage, the right end of the motor passes through the left end of the cage to reach the inside of the cage, and the right end of the motor is fixedly connected to the left end of the winding roller, the right end of the winding roller passes through the inside of the cage to the outside of the left end of the cage, and the winding roller is rotatably connected to the cage, and the left and right ends of the outer side of the winding roller are also provided with first limit blocks, and the outer side of the winding roller is fixedly connected to the inner wall of the first limit block, and the outer side of the winding roller is rolled up with a rolling shutter door.

[0006] Preferably, the outer side of the right end of the winding roller is fixedly connected to the left end of the first gear, the right end of the first gear is meshingly connected to the outer side of the top of the second gear, the top of the second gear is fixedly connected to the bottom end of the transmission rod, the outer side of the transmission rod near the upper position is sleeved with a first fixed block, and the transmission rod is rotatably connected to the first fixed block, and the left end of the first fixed block is fixedly connected to the right end of the cage.

[0007] Preferably, the bottom end of the second gear is fixedly connected to the top end of the first threaded rod, a second fixed block is sleeved on the outer side of the bottom end of the first threaded rod, and the first threaded rod is rotatably connected to the second fixed block, and the left end of the second fixed block is fixedly connected to the right end of the cage near the bottom.

[0008] Preferably, the left and right sides of the cage near the lower position are also provided with slide grooves, and the left and right sides of the rolling door near the bottom are also provided with first moving blocks, the side end of the rolling door is fixedly connected to one side end of the first moving block, the other side end of the first moving block on the right side of the rolling door passes through the slide groove and is mounted on the outside of the first threaded rod, and the first moving block is threadedly connected to the first threaded rod, and the first moving block is slidably connected to the slide groove.

[0009] Preferably, the other side end of the first movable block on the left side of the rolling shutter door passes through the slide groove and is mounted on the outside of the guide rod, and the first movable block is slidably connected to the guide rod, and the upper and lower ends of the guide rod are also provided with a third fixed block, and the guide rod is fixedly connected to the third fixed block, and the right side end of the third fixed block is fixedly connected to the left side end of the cage.

[0010] Preferably, the outer side of the right end of the winding roller is fixedly connected to the inner wall of the first pulley, the outer side of the first pulley is provided with one end of the first transmission belt, and the first pulley is drivingly connected to the first transmission belt, the other end of the first transmission belt is provided on the outer side of the second pulley, and the first transmission belt is drivingly connected to the second pulley, the left end of the second pulley is fixedly connected to the right end of the rotating block, the outer side of the left end of the rotating block is provided with the right end of the cage, and the rotating block is rotatably connected to the cage, the right end of the second pulley is fixedly connected to the left end of the fourth fixed block, the right end of the fourth fixed block is fixedly connected to the left end of the third pulley, the outer side of the third pulley is provided with one end of the second transmission belt, and the third pulley is drivingly connected to the second transmission belt, the other end of the second transmission belt is provided on the outer side of the fourth pulley, and the second transmission belt is drivingly connected to the fourth pulley.

[0011] Preferably, grooves are also provided on both sides of the cage, and fifth fixed blocks are also provided on the left and right sides of the bottom end of the groove, and the bottom end of the groove is fixedly connected to the bottom end of the fifth fixed block, the left end of the fourth pulley is fixedly connected to the right end of the second threaded rod, and the fifth fixed blocks on the left and right sides of the inside of the groove are respectively sleeved on the outside of the left and right ends of the second threaded rod, and the fifth fixed block is rotatably connected to the second threaded rod, and second limit blocks are also provided on the left and right sides of the fifth fixed block on the outside of the second threaded rod near the right end, and the outside of the second threaded rod is fixedly connected to the inner wall of the second limit block, a second moving block is sleeved on the outside of the second threaded rod, and the second threaded rod is threadedly connected to the second moving block, the top of the second moving block is fixedly connected to the bottom end of the protective fence, and the protective fence is slidably connected to the groove.

[0012] Preferably, a shock absorbing assembly is provided at the bottom end of the cage, and the shock absorbing assembly includes a damper, and the damper is arranged at the front and rear ends on the left and right sides of the bottom end of the cage, and the top end of the damper is fixedly connected to the bottom end of the cage, and the bottom end of the damper is fixedly connected to the top end of the fixed plate, and a first return spring is sleeved on the outer side of the damper, and the top end of the first return spring is fixedly connected to the bottom end of the cage, and the bottom end of the first return spring is fixedly connected to the top end of the fixed plate.

[0013] Preferably, a sixth fixing block is also provided on the left and right sides of the fixing plate, and the side ends of the fixing plate are fixedly connected to the side ends of the sixth fixing block, the sixth fixing block is sleeved on the outside of the fixing rod, and the sixth fixing block is slidably connected to the fixing rod, and the bottom end of the fixing rod is fixedly connected to the top end of the base plate.

[0014] Preferably, the sixth fixed block is sleeved with a second return spring on the outer side near the bottom end, the top of the second return spring is fixedly connected to the bottom end of the sixth fixed block, the bottom end of the second return spring is fixedly connected to the top of the bottom plate, a shock-absorbing pad is provided at the top of the bottom plate near the position below the fixed plate, and the top of the bottom plate is fixedly connected to the bottom end of the shock-absorbing pad.

[0015] The present invention is beneficial in that: 1. The present invention realizes the function of automatically closing the door for protection through the structural design of the door closing protection mechanism, which solves the problem that the existing device does not provide a structure for facilitating the closing of the door on the cage. Since the cage usually carries workers and goods, it is very easy for workers to lean on the cage door during use. At this time, if the cage door is not closed in place, it is very easy to cause dangerous situations, which effectively protects the safety of the workers; 2. The present invention achieves the function of buffering and shock absorption through the structural design of the shock-absorbing component, which solves the problem that the existing cage is not equipped with a shock-absorbing component. When the cage descends to the bottom, if the descending speed is too fast, the impact force generated can easily cause the staff to fall, thereby reducing the harm of the impact force to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a first partial cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of a first partial cross-sectional structure of the present invention; Figure 4 For the present invention Figure 1 A in the middle is an enlarged schematic diagram of the structure; Figure 5 For the present invention Figure 1 The enlarged schematic diagram at B in the middle is a schematic diagram of the structure; Figure 6 For the present invention Figure 1 The enlarged schematic diagram at C in the middle is a schematic diagram of the structure; Figure 7 For the present invention Figure 1 The enlarged schematic diagram at D in the middle is a schematic diagram of the structure; Figure 8 For the present invention Figure 2 The enlarged schematic diagram at E in the middle is a schematic diagram of the structure; Fig. 9 For the present invention Figure 2 The enlarged schematic diagram at F in the middle is a schematic diagram of the structure; Fig.10 For the present invention Figure 2 The enlarged schematic diagram at G in the middle is a schematic diagram of the structure; Fig.11 For the present invention Figure 3 The enlarged schematic diagram at H in the middle is a schematic diagram of the structure; Fig.12 For the present invention Figure 3 The enlarged schematic diagram at I in the middle is a schematic diagram of the structure; Fig.13 For the present invention Figure 3 Enlarged schematic diagram of the structure at J in the middle.

[0018] In the figure: 1, the main body of the lift; 2, the cage; 10, the motor; 11, the winding rod; 12, the first limit block; 13, the first pulley; 14, the first gear; 15, the second gear; 16, the transmission rod; 17, the first fixed block; 18, the first threaded rod; 19, the second fixed block; 20, the slide; 21, the rolling door; 22, the first moving block; 23, the third fixed block; 24, the guide rod; 25, the first transmission belt; 26, the second pulley; 2 7. Rotating block; 28. Fourth fixed block; 29. ​​Third pulley; 30. Second transmission belt; 31. Groove; 33. Fourth pulley; 34. Second threaded rod; 35. Fifth fixed block; 36. Second limit block; 37. Second moving block; 38. Protective fence; 39. Damper; 40. First return spring; 41. Fixed plate; 42. Sixth fixed block; 43. Fixed rod; 44. Bottom plate; 45. Second return spring; 46. Shock pad. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] For example, see Figure 1-Figure 13 As shown, a safe and energy-saving construction elevator comprises an elevator body 1; the front end of the elevator body 1 is meshed and connected with the rear end of a cage 2, and a door protection mechanism is arranged inside the cage 2; The door closing protection mechanism includes a motor 10, which is arranged at a position near the top of the left end of the cage 2, and the motor 10 is welded to the cage 2, the right end of the motor 10 passes through the left end of the cage 2 to reach the inside of the cage 2, and the right end of the motor 10 is welded to the left end of the winding rod 11, the right end of the winding rod 11 passes through the inside of the cage 2 to reach the outside of the left end of the cage 2, and the winding rod 11 is rotatably connected to the cage 2, and the left and right ends of the outer side of the winding rod 11 are also provided with a first limit block 12, and the outer side of the winding rod 11 is welded to the inner wall of the first limit block 12, the first limit block 12 is circular in design, and the outer side of the winding rod 11 is rolled up with a rolling shutter door 21, and the winding rod 11 is circular in design; During operation, the motor 10 is started to drive the winding roller 11 to rotate. At the same time, when the winding roller 11 rotates, the rolling shutter door 21 is driven to be lowered, and the first limit block 12 on the outer side of the winding roller 11 can limit the rolling shutter door 21 to prevent the rolling shutter door 21 from shifting when winding and lowering.

[0021] Furthermore, the outer side of the right end of the winding roller 11 is welded to the left end of the first gear 14, the right end of the first gear 14 is meshed and connected with the outer side of the top of the second gear 15, the top of the second gear 15 is welded to the bottom end of the transmission rod 16, and the outer side of the transmission rod 16 near the upper position is sleeved with a first fixing block 17, and the transmission rod 16 is rotatably connected to the first fixing block 17, the inner walls of the transmission rod 16 and the first fixing block 17 are both circular in design, and the left end of the first fixing block 17 is welded to the right end of the cage 2; During operation, the winding roller 11 rotates, driving the first gear 14 and the second gear 15 to rotate synchronously, and when the second gear 15 rotates 1, it drives the transmission rod 16 to rotate synchronously along the inside of the first fixed block 17, which is used to block the staff and prevent them from leaning on the rolling door.

[0022] Furthermore, the bottom end of the second gear 15 is welded to the top end of the first threaded rod 18, a second fixing block 19 is sleeved on the outside of the bottom end of the first threaded rod 18, and the first threaded rod 18 is rotatably connected to the second fixing block 19, the left end of the second fixing block 19 is welded to the right end of the cage 2 near the bottom end, and the bottom end of the first threaded rod 18 and the inner wall of the second fixing block 19 are both circular in design; During operation, the second gear 15 rotates, and at the same time drives the first threaded rod 18 at the bottom to rotate synchronously, and the bottom end of the first threaded rod 18 rotates along the inside of the second fixing block 19 .

[0023] Furthermore, the left and right sides of the cage 2 near the lower position are also provided with slide grooves 20, and the left and right sides of the rolling door 21 near the bottom are also provided with first moving blocks 22, the side end of the rolling door 21 is welded to one side end of the first moving block 22, and the other side end of the first moving block 22 on the right side of the rolling door 21 passes through the slide groove 20 and is sleeved on the outside of the first threaded rod 18, and the first moving block 22 is threadedly connected to the first threaded rod 18, and the first moving block 22 is slidably connected to the slide groove 20, and the first moving block 22 and the slide groove 20 are both square in design; During operation, the first threaded rod 18 drives the first moving block 22 to move downward along the surface of the first threaded rod 18 during rotation, and at the same time moves along the inside of the slide groove 20, and the first moving block 22 drives the rolling door 21 to move downward until it is completely closed, so as to block the staff and prevent them from leaning on the rolling door.

[0024] Further, the other side end of the first moving block 22 at the left end of the rolling door 21 passes through the slide slot 20 and is sleeved on the outside of the guide rod 24, and the first moving block 22 is slidably connected to the guide rod 24, the inner wall of the first moving block 22 and the guide rod 24 are both circular in design, and the upper and lower ends of the guide rod 24 are also provided with a third fixed block 23, and the guide rod 24 and the third fixed block 23 are welded together, and the right end of the third fixed block 23 is welded to the left end of the cage 2; During operation, when the rolling shutter door 21 moves downward, it drives the first moving block 22 on the left side of the cage 2 to move downward at the same time, and the first moving block 22 moves along the inside of the slide groove 20. At the same time, the first moving block 22 moves along the surface of the guide rod 24 on the inner side of the third fixed block 23 at the lower end, which is used to block the staff and prevent them from leaning on the rolling shutter door.

[0025] Furthermore, the outer side of the right end of the winding roller 11 is welded to the inner wall of the first pulley 13, one end of the first transmission belt 25 is sleeved on the outer side of the first pulley 13, and the first pulley 13 is transmission-connected to the first transmission belt 25, the other end of the first transmission belt 25 is sleeved on the outer side of the second pulley 26, and the first transmission belt 25 is transmission-connected to the second pulley 26, the left side end of the second pulley 26 is welded to the right side end of the rotating block 27, the outer side of the left side end of the rotating block 27 is sleeved with the right side end of the cage 2, and the rotating block 27 is a circular shaped design, and the rotating block 27 is rotatably connected to the cage 2, the right end of the second pulley 26 is welded to the left end of the fourth fixed block 28, the right end of the fourth fixed block 28 is welded to the left end of the third pulley 29, the fourth fixed block 28 is circularly designed, one end of the second transmission belt 30 is sleeved on the outer side of the third pulley 29, and the third pulley 29 is transmission-connected with the second transmission belt 30, the other end of the second transmission belt 30 is sleeved on the outer side of the fourth pulley 33, and the second transmission belt 30 is transmission-connected with the fourth pulley 33; During operation, the winding roller 11 rotates, driving the first pulley 13 and the first transmission belt 25 to rotate synchronously, and the first transmission belt 25 drives the second pulley 26 and the rotating block 27 to rotate synchronously, and the left end of the rotating block 27 rotates along the inside of the cage 2, and at the same time, the second pulley 26 drives the fourth fixed block 28 and the third pulley 29 to rotate synchronously, and the rotation of the third pulley 29 drives the second transmission belt 30 and the fourth pulley 33 to rotate synchronously.

[0026] Furthermore, a groove 31 is also provided on both sides of the cage 2, and a fifth fixing block 35 is also provided on the left and right sides of the bottom end of the groove 31, and the bottom end of the groove 31 is welded to the bottom end of the fifth fixing block 35, and the left end of the fourth pulley 33 is welded to the right end of the second threaded rod 34, and the fifth fixing blocks 35 on the left and right sides of the inside of the groove 31 are respectively sleeved on the left and right ends of the second threaded rod 34, and the fifth fixing block 35 is rotatably connected to the second threaded rod 34, the inner wall of the fifth fixing block 35 is circular in design, and the left and right sides of the fifth fixing block 35 on the outside of the second threaded rod 34 near the right end are also provided with a second limiting block 36, and the outer side of the second threaded rod 34 is welded to the inner wall of the second limiting block 36, the second limiting block 36 is circular in design, the outer side of the second threaded rod 34 is sleeved with a second moving block 37, and the second threaded rod 34 is threadedly connected to the second moving block 37, the top of the second moving block 37 is welded to the bottom end of the protective fence 38, the protective fence 38 is slidably connected to the groove 31, and the protective fence 38 and the groove 31 are both square in design; During operation, when the fourth pulley 33 rotates, it drives the second threaded rod 34 to rotate synchronously, and the second threaded rod 34 inside the groove 31 rotates along the inside of the fifth fixed block 35, and the second limit block 36 on the outside of the second threaded rod 34 can limit the second threaded rod 34 to prevent the second threaded rod 34 from shifting in position during the rotation process, and when the second threaded rod 34 rotates, it drives the second moving block 37 to move to the right along the outside of the second threaded rod 34, and at the same time drives the fourth fixed block 28 to move until the fourth fixed block 28 moves along the inside of the groove 31 to the inside of the cage 2 and blocks the rear of the rolling door 21, thereby preventing the staff from leaning on the rolling door.

[0027] For example 2, please refer to Figure 1-Figure 4As shown, a shock absorbing assembly is provided at the bottom of the cage 2, and the shock absorbing assembly includes a damper 39, which is arranged at the front and rear ends of the left and right sides of the bottom of the cage 2, and the top of the damper 39 is welded to the bottom of the cage 2, and the bottom of the damper 39 is welded to the top of the fixing plate 41, and the outer side of the damper 39 is sleeved with a first return spring 40, and the top of the first return spring 40 is welded to the bottom of the cage 2, and the bottom of the first return spring 40 is welded to the top of the fixing plate 41, and the fixing plate 41 is square in design; During operation, when the cage 2 descends at a faster speed, the impact force generated when the bottom plate 44 contacts the ground will cause the cage 2 to move downward, and squeeze the damper 39 and the first return spring 40 to contract and buffer, which is used for buffering and shock absorption.

[0028] Furthermore, the left and right sides of the fixing plate 41 are also provided with sixth fixing blocks 42, and the side ends of the fixing plate 41 and the side ends of the sixth fixing blocks 42 are welded together, the sixth fixing blocks 42 are sleeved on the outside of the fixing rod 43, and the sixth fixing blocks 42 are slidably connected with the fixing rod 43, the inner wall of the sixth fixing block 42 and the fixing rod 43 are both circular in design, and the bottom end of the fixing rod 43 is welded to the top end of the bottom plate 44; During operation, when the cage 2 moves downward, the fixing plate 41 is driven to move downward at the same time, and the sixth fixing blocks 42 on both sides of the fixing plate 41 will move along the surface of the fixing rod 43.

[0029] Furthermore, a second return spring 45 is sleeved on the outer side near the bottom end of the sixth fixed block 42, and the top end of the second return spring 45 is welded to the bottom end of the sixth fixed block 42, and the bottom end of the second return spring 45 is welded to the top end of the bottom plate 44, and a shock-absorbing pad 46 is provided at the top end of the bottom plate 44 near the position below the fixed plate 41, and the top end of the bottom plate 44 is glued to the bottom end of the shock-absorbing pad 46, and the shock-absorbing pad 46 is square in design; During operation, when the sixth fixed block 42 moves downward, it will squeeze the second return spring 45 to shrink, and at the same time drive the bottom end of the bottom plate 44 to move and squeeze toward the top end of the shock-absorbing pad 46, so that the shock-absorbing pad 46 shrinks and shock-absorbing, which is used for buffering and shock-absorbing, absorbing impact force and reducing the impact on the staff.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A safe and energy-saving construction elevator, comprising an elevator body (1); characterized in that: The front end of the elevator body (1) is meshedly connected with the rear end of the cage (2), and a door protection mechanism is arranged inside the cage (2); The door closing protection mechanism comprises a motor (10), wherein the motor (10) is arranged at a position near the upper side of the left end of the cage (2), and the motor (10) is fixedly connected to the cage (2), the right end of the motor (10) passes through the left end of the cage (2) to reach the inside of the cage (2), and the right end of the motor (10) is fixedly connected to the left end of a winding roller (11), the right end of the winding roller (11) passes through the inside of the cage (2) to reach the outside of the left end of the cage (2), and the winding roller (11) is rotatably connected to the cage (2), and the left and right ends of the outer side of the winding roller (11) are also provided with first limit blocks (12), and the outer side of the winding roller (11) is fixedly connected to the inner wall of the first limit block (12), and the outer side of the winding roller (11) is rolled up with a rolling door (21).

2. A safe and energy-saving construction elevator according to claim 1, characterized in that: The outer side of the right end of the winding roller (11) is fixedly connected to the left end of the first gear (14), the right end of the first gear (14) is meshedly connected to the outer side of the top end of the second gear (15), the top end of the second gear (15) is fixedly connected to the bottom end of the transmission rod (16), the outer side of the transmission rod (16) near the upper position is sleeved with a first fixed block (17), and the transmission rod (16) is rotatably connected to the first fixed block (17), and the left end of the first fixed block (17) is fixedly connected to the right end of the cage (2).

3. A safe and energy-saving construction elevator according to claim 2, characterized in that: The bottom end of the second gear (15) is fixedly connected to the top end of the first threaded rod (18); a second fixing block (19) is sleeved on the outer side of the bottom end of the first threaded rod (18); the first threaded rod (18) is rotatably connected to the second fixing block (19); and the left end of the second fixing block (19) is fixedly connected to the right end of the cage (2) near the bottom end.

4. A safe and energy-saving construction elevator according to claim 3, characterized in that: The cage (2) is also provided with a slide groove (20) on the left and right sides near the lower position, and the rolling door (21) is also provided with a first moving block (22) on the left and right sides near the bottom end, the side end of the rolling door (21) is fixedly connected to the side end of the first moving block (22), the other side end of the first moving block (22) on the right side of the rolling door (21) passes through the slide groove (20) and is sleeved on the outside of the first threaded rod (18), and the first moving block (22) is threadedly connected to the first threaded rod (18), and the first moving block (22) is slidably connected to the slide groove (20).

5. A safe and energy-saving construction elevator according to claim 4, characterized in that: The other side end of the first movable block (22) at the left side end of the rolling door (21) passes through the slide groove (20) and is sleeved on the outside of the guide rod (24), and the first movable block (22) is slidably connected to the guide rod (24). The upper and lower ends of the guide rod (24) are also provided with a third fixed block (23), and the guide rod (24) is fixedly connected to the third fixed block (23), and the right side end of the third fixed block (23) is fixedly connected to the left side end of the cage (2).

6. A safe and energy-saving construction elevator according to claim 5, characterized in that: The outer side of the right end of the winding roller (11) is fixedly connected to the inner wall of the first pulley (13); the outer side of the first pulley (13) is sleeved on one end of a first transmission belt (25), and the first pulley (13) is transmission-connected to the first transmission belt (25); the other end of the first transmission belt (25) is sleeved on the outer side of a second pulley (26), and the first transmission belt (25) is transmission-connected to the second pulley (26); the left side end of the second pulley (26) is fixedly connected to the right side end of a rotating block (27); the outer side of the left side end of the rotating block (27) is sleeved on the right side of the cage (2); The second belt pulley (26) is fixedly connected to the left end of the fourth fixed block (28), the right end of the fourth fixed block (28) is fixedly connected to the left end of the third belt pulley (29), the outer side of the third belt pulley (29) is sleeved on one end of the second transmission belt (30), and the third belt pulley (29) is transmission-connected to the second transmission belt (30), the other end of the second transmission belt (30) is sleeved on the outer side of the fourth belt pulley (33), and the second transmission belt (30) is transmission-connected to the fourth belt pulley (33).

7. A safe and energy-saving construction elevator according to claim 6, characterized in that: The cage (2) is also provided with grooves (31) on both sides, and fifth fixing blocks (35) are also provided on the left and right sides of the bottom end of the groove (31), and the bottom end of the groove (31) is fixedly connected to the bottom end of the fifth fixing block (35), the left end of the fourth pulley (33) is fixedly connected to the right end of the second threaded rod (34), the fifth fixing blocks (35) on the left and right sides of the groove (31) are respectively sleeved on the outside of the left and right ends of the second threaded rod (34), and the fifth fixing block (35) is rotatably connected to the second threaded rod (34). The outer side of the second threaded rod (34) is connected to the left and right sides of the fifth fixed block (35) close to the right side, and second limit blocks (36) are also arranged, and the outer side of the second threaded rod (34) is fixedly connected to the inner wall of the second limit block (36), and the outer side of the second threaded rod (34) is sleeved with a second movable block (37), and the second threaded rod (34) is threadedly connected to the second movable block (37), and the top end of the second movable block (37) is fixedly connected to the bottom end of the protective fence (38), and the protective fence (38) is slidably connected to the groove (31).

8. A safe and energy-saving construction elevator according to claim 7, characterized in that: A shock absorbing assembly is provided at the bottom end of the cage (2), and the shock absorbing assembly includes a damper (39). The damper (39) is provided at the front and rear ends on the left and right sides of the bottom end of the cage (2), and the top end of the damper (39) is fixedly connected to the bottom end of the cage (2), and the bottom end of the damper (39) is fixedly connected to the top end of the fixed plate (41). A first return spring (40) is sleeved on the outer side of the damper (39), and the top end of the first return spring (40) is fixedly connected to the bottom end of the cage (2), and the bottom end of the first return spring (40) is fixedly connected to the top end of the fixed plate (41).

9. A safe and energy-saving construction elevator according to claim 8, characterized in that: Sixth fixing blocks (42) are also provided on the left and right sides of the fixing plate (41), and the side ends of the fixing plate (41) are fixedly connected to the side ends of the sixth fixing blocks (42). The sixth fixing blocks (42) are sleeved on the outside of the fixing rod (43), and the sixth fixing blocks (42) are slidably connected to the fixing rod (43). The bottom end of the fixing rod (43) is fixedly connected to the top end of the bottom plate (44).

10. A safe and energy-saving construction elevator according to claim 9, characterized in that: A second return spring (45) is sleeved on the outer side near the bottom end of the sixth fixed block (42); the top end of the second return spring (45) is fixedly connected to the bottom end of the sixth fixed block (42); the bottom end of the second return spring (45) is fixedly connected to the top end of the bottom plate (44); a shock-absorbing pad (46) is provided at the top end of the bottom plate (44) near the bottom of the fixed plate (41); and the top end of the bottom plate (44) is fixedly connected to the bottom end of the shock-absorbing pad (46).

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