Elevator mounting platform capable of multiplying lifting force

Abstract

The utility model discloses an elevator mounting platform capable of multiplying lifting force, and belongs to the technical field of construction machinery high-altitude operation. The elevator installation platform capable of multiplying the lifting force comprises a hanging basket body, guardrails are arranged on the periphery of the hanging basket body, an elevator, a safety lock and a hanging plate are installed in the hanging basket body, the elevator and the hanging plate are located on the two sides of the safety lock, a working steel wire rope is arranged on the elevator in a penetrating mode, and the safety lock is provided with a safety steel wire rope. The support assembly is connected with the hanging basket body and comprises a guide frame and a second cross beam, the hanging basket body is installed on the guide frame and the second cross beam, and the elevator, the safety lock and the hanging plate are connected with the second cross beam; the pulley assembly is provided with a pulley, and the working steel wire rope penetrates through the hoister and is connected with the hanging plate after passing through the pulley. According to the elevator mounting platform, the pulley is arranged at the top, so that the lifting force of the elevator can be increased, the elevator mounting platform can have larger bearing capacity under the condition that the elevator mounting platform is provided with only one elevator, and heavy objects such as constructors, operation tools and equipment can be carried at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of multiplication lifting force elevator installation platform, belong to the high-altitude operation technical field of construction machinery. BACKGROUND

[0002] In high-rise building, elevator is indispensable traffic tool.But elevator installation construction technology is still relatively backward, generally using scaffold to install.The installation mode of using scaffold is time-consuming, laborious and costly, and the safety is not high, and for large-area building group and long-term installation, the use cost is high.

[0003] At present, for the above problems, some elevator manufacturers use special elevator installation platform, elevator installation platform usually refers to a kind of equipment or platform system for supporting elevator installation work, elevator installation platform can ensure that elevator is installed safely and efficiently in shaft.But in the process of elevator installation, elevator installation platform not only carries construction personnel, but also carries heavy objects such as work tools and equipment, the existing elevator installation platform has small bearing capacity, workers need to repeatedly carry tools or equipment up and down, which affects the installation progress of elevator and increases construction cost. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of multiplication lifting force elevator installation platform to solve the problem that the bearing capacity of existing elevator installation platform is small, worker needs to repeatedly carry tool or equipment up and down, which affects the installation progress of elevator and increases construction cost.

[0005] The utility model realizes the following technical scheme:

[0006] The utility model provides a kind of multiplication lifting force elevator installation platform, comprising:

[0007] The basket body is provided with guardrails around, and a hoist, a safety lock and a hanging plate are installed in the basket body, the hoist and the hanging plate are located on the two sides of the safety lock, the hoist is provided with a working steel wire rope, and the safety lock is provided with a safety steel wire rope.

[0008] The bracket assembly is connected with the basket body, and comprises a guide frame and a second cross beam, the basket body is installed on the guide frame and the second cross beam, and the hoist, the safety lock and the hanging plate are connected with the second cross beam.

[0009] The pulley assembly is provided with a pulley, and the working steel wire rope passes through the pulley and is connected with the hanging plate.

[0010] In an embodiment of the utility model, the basket body comprises a vertical rod, a first mounting bracket, a second mounting bracket and a hand pull switch.

[0011] The vertical rods are connected with the guide frames, and the guardrails are installed between two adjacent vertical rods;

[0012] The first mounting frame and the second mounting frame are connected with the second cross beam, the hoist is installed on the second mounting frame, and the safety lock and the hand-pull switch are connected with the first mounting frame.

[0013] In an embodiment of the utility model, the top ceiling is provided with a connecting frame, a top plate and a third rod, the top plate is connected with the connecting frame, and the two ends of the third rod are connected with the connecting frame and the vertical rod respectively, so that the top ceiling is connected with the hanging basket body.

[0014] In an embodiment of the utility model, the bracket assembly comprises a track lock, the track lock is connected with the guide frame, a connecting piece is installed on the track lock, and the connecting piece is connected with the hand-pull switch through a chain. When the hanging basket body is suspended and stationary, the hand-pull switch is opened, the spring in the track lock resets the lock block, the track lock is locked with the guide rail, and a stable and very safe stationary working platform is provided for workers.

[0015] In an embodiment of the utility model, the bracket assembly further comprises a guide wheel and a fall arrestor, the guide wheel and the fall arrestor are connected with the guide frame, and the guide wheel is distributed on the two sides of the track lock.

[0016] In an embodiment of the utility model, the guide frame is connected with the guide rail through the guide wheel, the track lock and the fall arrestor, and the pulley assembly is connected with the first cross beam.

[0017] In an embodiment of the utility model, the pulley assembly further comprises a shaft, a mounting frame and a connecting plate.

[0018] The mounting frame is connected with the first cross beam, and the safety steel wire rope is connected with the mounting frame.

[0019] The shaft penetrates through the mounting frame and is rotationally connected with the mounting frame, the connecting plate is sleeved on the outer periphery of the shaft, and the pulley is rotationally connected with the connecting plate. By arranging the pulley on the top, the lifting force of the hoist can be increased, so that the elevator installation platform can have greater carrying capacity under the condition of only one hoist, and can simultaneously carry construction personnel, work tools and equipment and other heavy objects.

[0020] In an embodiment of the utility model, the ceiling is inverted V type, the ceiling is provided with travel switch, is connected with the top plate. The whole ceiling is inverted V type structure, the top plate is inclined and leans on each other, compared with plane type ceiling, the inclined ceiling can reduce the impact force of falling object, and will not produce the phenomenon of falling object accumulation.

[0021] In an embodiment of the utility model, the basket body further includes a secondary basket, the secondary basket is connected with the guardrail through a first rod, and a wheel is arranged on the side of the secondary basket close to the shaft wall. The wheel can assist the basket body in running up and down along the elevator shaft.

[0022] In an embodiment of the utility model, the basket body is provided with an electric control box, the electric control box is installed on the guardrail, and the hoist is connected with the electric control box.

[0023] Advantages

[0024] The elevator installation platform provided by the utility model is mainly applied to the installation of elevators in high-rise buildings, a pulley assembly is installed at the top of the elevator shaft, a working steel wire rope passes through the hoist and is fixedly connected with a hanging plate after passing through the pulley at the top, the pulley arranged at the top can increase the lifting force of the hoist, so that the elevator installation platform can have greater carrying capacity under the condition of only one hoist, and can simultaneously carry construction personnel, work tools and equipment and other heavy objects.

[0025] The elevator installation platform is provided with a ceiling above the basket body, the whole ceiling is inverted V type structure, the top plate is inclined and leans on each other, compared with plane type ceiling, the inclined ceiling can reduce the impact force of falling object, and will not produce the phenomenon of falling object accumulation. The bracket assembly is further provided with a rail lock and a falling preventer, and the rail lock and the falling preventer form multiple protection with the safety lock, so that the basket body can run safely and stably. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the perspective view of the elevator installation platform provided by the utility model;

[0027] Figure 2 It is the front view of the elevator installation platform provided by the utility model;

[0028] Figure 3 It is the perspective view of the bracket assembly provided by the utility model;

[0029] Figure 4 It is the perspective view of the basket body provided by the utility model;

[0030] Figure 5 It is the perspective view of the ceiling provided by the utility model;

[0031] Figure 6The utility model provides a perspective view of pulley assembly.

[0032] Figure 7 The utility model provides a left view of pulley assembly.

[0033] In the drawing: 1, hanging basket body;2, support assembly;3, ceiling;4, pulley assembly;5, guide rail;6, first crossbeam;

[0034] 11, guardrail;12, hoist;13, safety lock;14, vertical rod;15, electric control box;16, hanging plate;17, first mounting frame;18, second mounting frame;19, hand switch;110, sub basket;111, first rod;112, leaning wheel;113, work wire rope;114, safety wire rope;115, bottom plate;

[0035] 21, guide frame;22, guide wheel;23, lock rail device;24, anti-falling device;25, second crossbeam;251, hole;26, clamping plate;27, connecting rod;28, second rod;29, connecting piece;210, chain;

[0036] 31, connecting frame;32, top plate;33, third rod;34, travel switch;

[0037] 41, pulley;42, shaft;43, mounting frame;44, connecting plate. DETAILED DESCRIPTION

[0038] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are a part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0039] In the utility model, unless another explicit provision and limitation, the terms "link", "connect", "fix" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through intermediate medium indirectly connected, can be two elements inside the communication or two element's mutual action relation. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "on the surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that first feature is higher than second feature in horizontal height. First feature "under", "below" and "on the surface of" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that first feature is lower than second feature in horizontal height.

[0041] As Figures 1 to 7 The utility model provides a kind of elevator installation platform of multiplication promotion force, which is mainly used for the installation and maintenance of elevator in high-rise building, instead of the way of installing by scaffold, to ensure the safe and efficient installation of elevator in shaft. At the same time, it can also carry heavy objects such as construction personnel, tools and equipment.

[0042] In some embodiments, the elevator installation platform includes a basket body 1, a support assembly 2, a roof 3, a pulley assembly 4, a guide rail 5 and a first cross beam 6. The basket body 1 is installed on the support assembly 2, the roof 3 is located on the side of the basket body 1 away from the support assembly 2 and is connected with the basket body 1, the support assembly 2 provides support for the basket body 1 and the roof 3, the basket body 1 is used to carry heavy objects such as construction personnel, tools and equipment, and the roof 3 can block falling objects to prevent them from injuring construction personnel. The guide rail 5 is installed on both sides of the elevator shaft, the support assembly 2 is connected with the guide rail 5, and the support assembly 2 can move up and down along the guide rail 5. The first cross beam 6 is installed at the top of the elevator shaft, the pulley assembly 4 is installed at the top of the elevator shaft and is connected with the first cross beam 6, the basket body 1 is connected with the pulley assembly 4 through the working steel wire rope 113, and the pulley assembly 4 can increase the carrying capacity of the basket body 1, so that the basket body 1 can carry more heavy objects.

[0043] As Figure 3As shown, further, in some embodiments, the support assembly 2 is provided with a guide frame 21, which is a triangular support capable of increasing the support force of the support assembly 2. The guide frame 21 is provided with a guide wheel 22 and a track locking device 23, the guide wheel 22 is installed on both sides of the track locking device 23, and the anti-falling device 24 is installed at the bottom of the guide frame 21. The guide frame 21 is connected with the guide rail 5 through the guide wheel 22, the track locking device 23 and the anti-falling device 24. The guide wheel 22 provides guidance for the support assembly 2, so that the support assembly 2 moves up and down along the guide rail 5. The distance between the guide wheels can be adjusted according to the size of the guide rail 5, so as to ensure the stability of the basket body in upward and downward movement. The track locking device 23 and the anti-falling device 24 can ensure the safe operation of the support assembly 2. When the working steel wire rope 113 fails and the support assembly 2 slides down the guide rail 5 quickly, the anti-falling device 24 can prevent the support assembly 2 from falling, thereby ensuring the safety of the hanging basket body 1.

[0044] Specifically, in the present embodiment, the number of guide frames 21 is two, which are connected with the guide rails 5 on both sides of the elevator shaft. Each guide frame 21 is provided with two guide wheels 22, one track locking device 23 and one anti-falling device 24. When installing, the step surface of the guide wheel 22 should be kept 2-3mm away from the guide rail 5 to prevent large friction force between the step surface and the guide rail 5 during operation.

[0045] Further, in some embodiments, a second cross beam 25 is arranged between the two guide frames 21, which is composed of multiple steel pipes and can adjust the length of the second cross beam 25 according to the distance between the two guide rails 5, so that the elevator installation platform can be suitable for the installation of elevators with different shaft sizes. The second cross beam 25 has two, which are arranged in parallel between the two guide frames 21. The second cross beam 25 is provided with a circular hole 251, which is located at the center of the two guide frames 21. The clamping plate 26 is installed on the second cross beam 25 and fixed by bolts, so that the connection of the multiple steel pipes is more firm. The second cross beam 25 is provided with a connecting rod 27, which has three, one of which is perpendicular to the second cross beam 25, and the other two are located on both sides and are inclined. A second rod 28 is arranged between the two guide frames 21, which is located on both sides of the second cross beam 25 and parallel to the second cross beam 25. The connecting rod 27 and the second rod 28 are used to increase the support force of the support assembly 2.

[0046] As Figures 1 to 4As shown, further, in some embodiments, the basket body 1 comprises three bottom plates 115, one of which is provided with a notch, two of which are directly mounted on the second cross beam 25 and the second rod 28 and connected with the guide frame 21, and the bottom plate 115 with the notch is mounted above the other two bottom plates 115 and fixedly connected with the other two bottom plates 115. The guide frame 21 is provided with a vertical rod 14 at each end, and a guardrail 11 is mounted between the adjacent two vertical rods 14 to form a basket of the basket body 1, preventing the construction personnel or tools from falling.

[0047] Further, in some embodiments, the basket body 1 is further provided with a first mounting frame 17, a second mounting frame 18 and a hanging plate 16, which are connected with the second cross beam 25 through the bottom plate 115. The first mounting frame 17 is mounted at the middle position of the second cross beam 25 and fixedly connected with the hole 251 through bolts, and the second mounting frame 18 and the hanging plate 16 are symmetrically distributed on both sides of the first mounting frame 17 and fixedly connected with the second cross beam 25 through bolts. A safety lock 13 is mounted on the first mounting frame 17, and a safety wire rope 114 passes through the safety lock 13 and is connected with the top pulley assembly 4, which is used to ensure the safety of the basket body 1. A hoist 12 is mounted on the second mounting frame 18, and a working wire rope 113 passes through the hoist 12, the pulley assembly 4 and the hanging plate 16 and is finally fixed on the hanging plate 16. The basket body 1 is further provided with an electric control box 15, which is mounted on the guardrail 11 and connected with the hoist 12, and is used for electrical control of the entire elevator installation platform.

[0048] Specifically, in the present embodiment, the hand switch 19 is mounted on the first mounting frame 17, one side of the lock rail device 23 is provided with a connecting piece 29, the hand switch 19 and the connecting piece 29 are connected through the chain 210, and the lock rail device 23 is connected with the hand switch 19 through the connecting piece 29 and the chain 210. When the basket body 1 is suspended and stationary, the hand switch 19 is opened, the spring in the lock rail device 23 resets the lock block, so that the lock rail device 23 bites the guide rail 5, providing a stable and very safe stationary working platform for workers.

[0049] Further, in some embodiments, a vice basket 110 can be additionally installed on one side of the basket body 1, the vice basket 110 is connected with the guardrail 11 through a first rod 111, and the first rod 111 is a reinforcing pipe which can strengthen the stability of the connection between the vice basket 110 and the guardrail 11. A supporting wheel 112 is further mounted on both sides of the vice basket 110, which can assist the basket body 1 to run up and down along the elevator shaft.

[0050] As Figure 5As shown, further, in some embodiments, the ceiling 3 comprises a connecting frame 31 and a top plate 32, the top plate 32 is fixedly connected with the connecting frame 31, the top plate 32 is spliced by multiple plates, the multiple plates can move relative to each other, so that the size of the ceiling 3 can be adjusted according to the width of the shaft, and the elevator installation platform can be suitable for the installation of elevators of various sizes. The two ends of the connecting frame 31 are connected with third rods 33, the third rods 33 are four, located at the four corners of the ceiling 3, and are connected with the four vertical rods 14 of the basket body 1 respectively, so that the basket body 1 is connected with the ceiling 3, and the third rods 33 can also increase the height of the ceiling 3. The ceiling 3 is also provided with a travel switch 34 installed on the top plate 32, which is used to detect the distance between the elevator installation platform and the top of the elevator shaft, so as to prevent the elevator installation platform from colliding with the top of the elevator shaft during the lifting process. The whole ceiling 3 is in inverted V-shaped structure, and the top plate 32 is inclined to each other. Compared with the flat ceiling, the inclined ceiling can reduce the impact force of the falling objects, and the phenomenon of falling object accumulation will not occur.

[0051] As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , further, in some embodiments, a first cross beam 6 is installed in the middle of the top of the elevator shaft, and the pulley assembly 4 is installed on the first cross beam 6. The pulley assembly 4 comprises a pulley 41, a shaft 42 and a mounting frame 43, the mounting frame 43 is connected with the first cross beam 6, the safety steel wire rope 114 is fixedly connected with the mounting frame 43, the mounting frame 43 is provided with a through hole, the shaft 42 passes through the mounting frame 43, and the two ends are fixedly connected with the mounting frame 43 through nuts, a connecting plate 44 is sleeved on the shaft 42, the pulley 41 is installed between the two connecting plates 44 and is rotatably connected with the two connecting plates 44. The installation direction of the pulley 41 is parallel to the second cross beam 25 and located in the same plane. The working steel wire rope 113 is fixedly connected with the hanging plate 16 after passing through the hoist 12 and the pulley 41 in sequence, by setting the pulley at the top, the lifting force of the hoist 12 can be increased, so that the elevator installation platform can have greater carrying capacity under the condition of only one hoist 12, and can simultaneously carry heavy objects such as construction personnel, tools and equipment.

[0052] Optionally, in the embodiment, the whole elevator installation platform is a metal structure, the support assembly 2, the first mounting frame 17 and the second mounting frame 18 are all steel structures, the bottom plate 115 and the ceiling 3 are aluminum alloy structures, the basket body 1 is relatively light in weight, which reduces the overall weight of the elevator installation platform and can provide more load capacity. The basket body 1 adopts a plug-in structure at multiple positions, which is quick to assemble and disassemble, easy to carry, can be used with a van truck after disassembly, has low installation and maintenance cost, and all parts can be repeatedly used, thereby reducing production cost.

[0053] Optionally, the safety lock 13 is selected to be a heavy-duty safety lock, selected according to the maximum load bearing capacity of the basket body 1, to ensure that the elevator installation platform runs stably and safely during transportation.

[0054] In summary, the elevator installation platform provided by the utility model is mainly applied to the installation of elevators in high-rise buildings, a pulley assembly 4 is installed at the top of the elevator shaft, the working steel wire rope 113 passes through the hoist 12 and is fixedly connected with the hanging plate 16 after passing through the top pulley 41, the pulley is arranged at the top, the lifting force of the hoist 12 can be increased, the elevator installation platform can have greater load bearing capacity under the condition that there is only one hoist 12, and can simultaneously carry construction personnel, work tools and equipment and other heavy objects. A ceiling 3 is arranged above the basket body 1, the ceiling 3 is in an inverted V-shaped structure as a whole, the top plates 32 are inclined and close to each other, compared with a planar ceiling, the inclined ceiling can reduce the impact force of falling objects and will not cause the phenomenon of accumulation of falling objects. The second cross beam 25 in the support assembly 2 and the top plate 32 of the top plate are both adjustable structures, the elevator installation platform can be adjusted according to the size of the elevator shaft, so that the elevator installation platform can be applied to the installation of elevators of various sizes. The lock rail device 3 and the anti-falling device 24 are further arranged on the support assembly 2, and multiple protections are formed with the safety lock 18, so that the basket body 1 can run safely and stably.

[0055] The technical features of the above embodiments can be combined in any manner, and to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the description.

[0056] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the invention patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model.

[0057] The principle and implementation manner of the utility model are described by applying specific embodiments in this paper, and the above embodiment description is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principle of the utility model, a number of improvements and modifications can be made to the utility model, and these improvements and modifications also fall within the protection scope of the claims of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A force multiplying elevator installation platform, characterized by, Include: The basket body (1) is provided with a guardrail (11) around the basket body (1), a lifting machine (12), a safety lock (13) and a hanging plate (16) are installed in the basket body (1), the lifting machine (12) and the hanging plate (16) are located on both sides of the safety lock (13), the lifting machine (12) is provided with a working steel wire rope (113), and the safety lock (13) is provided with a safety steel wire rope (114); The support assembly (2) is connected with the basket body (1), the support assembly (2) includes a guide frame (21) and a second cross beam (25), the basket body (1) is installed on the guide frame (21) and the second cross beam (25), and the lifting machine (12), the safety lock (13) and the hanging plate (16) are connected with the second cross beam (25); The pulley assembly (4) is provided with a pulley (41), the working steel wire rope (113) passes through the pulley (41) and is connected with the hanging plate (16).

2. A force multiplying elevator installation platform according to claim 1, wherein, The basket body (1) includes a vertical rod (14), a first mounting bracket (17), a second mounting bracket (18) and a hand pull switch (19); The vertical rod (14) is connected with the guide frame (21), and the guardrail (11) is installed between adjacent two vertical rods (14); The first mounting bracket (17) and the second mounting bracket (18) are connected with the second cross beam (25), the lifting machine (12) is installed on the second mounting bracket (18), and the safety lock (13) and the hand pull switch (19) are connected with the first mounting bracket (17).

3. A force multiplying elevator installation platform according to claim 2, wherein, The top (3) is provided with a connecting frame (31), a top plate (32) and a third rod (33), the top plate (32) is connected with the connecting frame (31), and the two ends of the third rod (33) are respectively connected with the connecting frame (31) and the vertical rod (14), so that the top (3) is connected with the basket body (1).

4. A force multiplying elevator installation platform according to claim 2, wherein, The support assembly (2) includes a lock rail device (23), the lock rail device (23) is connected with the guide frame (21), a connecting piece (29) is installed on the lock rail device (23), and the connecting piece (29) is connected with the hand pull switch (19) through a chain (210).

5. A force multiplying elevator installation platform according to claim 4, wherein, The support assembly (2) further includes a guide wheel (22) and a fall arrest device (24), the guide wheel (22) and the fall arrest device (24) are connected with the guide frame (21), and the guide wheel (22) is distributed on both sides of the lock rail device (23).

6. A force multiplying elevator installation platform according to claim 5, wherein, It also includes a guide rail (5) and a first cross beam (6), the guide frame (21) is connected with the guide rail (5) through the guide wheel (22), the lock rail device (23) and the fall arrest device (24), and the pulley assembly (4) is connected with the first cross beam (6).

7. A force multiplying elevator installation platform according to claim 6, wherein, The pulley assembly (4) further includes a shaft (42), a mounting bracket (43) and a connecting plate (44); The mounting frame (43) is connected with the first cross beam (6), and the safety steel wire rope (114) is connected with the mounting frame (43); The shaft (42) penetrates through the mounting frame (43) and is rotationally connected with the mounting frame (43), the connecting plate (44) is sleeved on the outer periphery of the shaft (42), and the pulley (41) is rotationally connected with the connecting plate (44).

8. A force multiplying elevator installation platform according to claim 3, wherein, The top ceiling (3) is inverted V-shaped, and the top ceiling (3) is provided with a travel switch (34) connected with the top plate (32).

9. A power multiplying elevator installation platform according to any one of claims 1-8, characterized in that, The hanging basket body (1) further comprises a sub-basket (110), the sub-basket (110) is connected with the guardrail (11) through a first rod (111), and the sub-basket (110) is provided with a supporting wheel (112) on the side close to the well wall.

10. A power multiplying elevator installation platform according to any one of claims 1-8, characterized in that, The hanging basket body (1) is provided with an electric control box (15), the electric control box (15) is installed on the guardrail (11), and the elevator (12) is connected with the electric control box (15).

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