A window cleaning machine for high-rise building exterior walls

Abstract

The application discloses a window cleaning machine for high-rise building outer wall glass in the technical field of cleaning equipment, which comprises a hanging basket, the hanging basket comprises a fixed base hoisted, and stretching mechanisms are arranged on the left side and the right side of the fixed base; a self-balancing mechanism is further arranged on the fixed base; the self-balancing mechanism comprises a sliding seat horizontally and slidingly arranged on the fixed base and a counterweight, the sliding seat and the counterweight are connected through a transmission unit; the transmission unit is used for driving the counterweight to move in the direction opposite to the moving direction of the sliding seat when the sliding seat moves; and the sliding seat is used for standing workers. The stretching mechanisms arranged on the two sides of the hanging basket can adjust the movable area on the hanging basket according to actual needs, increase the actual operation range of workers and improve the applicability of the product. The application can drive the counterweight to move in the opposite direction of the worker when the hanging basket moves, so that the hanging basket can be self-balanced, and the hoisting difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, specifically to a window cleaning machine for the exterior glass of high-rise buildings and its manufacturing process. Background Technology

[0002] Window cleaning machines are a new type of machinery that has emerged in recent years with the increase in high-rise buildings. Due to the diversification of building styles and the increasing scale of buildings, the requirements for window cleaning machines are also developing towards ultra-high and ultra-large dimensions. Currently, a typical window cleaning machine includes a trolley, a trolley travel motor, a column turntable, a column, a column rotation motor, a boom at the top of the column, and a basket at one end of the boom. In actual operation, the distance between the boom and the basket is too large due to the super high-rise buildings, making it difficult to adjust the worker's working range using the boom. Therefore, the size of the movable area on the basket determines the worker's actual working range. Simply setting an excessively large basket not only increases costs, but the large area, combined with the worker's movement on it, also makes the basket difficult to balance during hoisting, increasing the difficulty of hoisting. Therefore, a window cleaning machine and method for the exterior glass of high-rise buildings are needed to solve the above problems. Summary of the Invention

[0003] The technical problem of this invention is to provide a window cleaning machine and method for the exterior glass of high-rise buildings. This invention features extension mechanisms on both sides of the suspended platform, allowing the platform's area to be adjusted according to actual needs, increasing the worker's working range and improving the product's applicability. This invention also enables the counterweight to move in the opposite direction when the worker moves the suspended platform, allowing the platform to self-balance and reducing the difficulty of hoisting.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a window cleaning machine for the exterior glass of high-rise buildings, comprising a suspended platform, the suspended platform including a fixed base to be suspended, and extension mechanisms provided on both the left and right sides of the fixed base for expanding the area of ​​the fixed base; a self-balancing mechanism is also provided on the fixed base; the self-balancing mechanism includes a sliding seat and a counterweight horizontally slidably mounted on the fixed base, the sliding seat and the counterweight being connected by a transmission unit; the transmission unit is used to drive the counterweight to move in the opposite direction to the movement of the sliding seat when the sliding seat moves; the sliding seat is used for workers to stand on.

[0005] As a further embodiment of the present invention, the extension mechanism includes an extension base that slides horizontally on both sides of a fixed base. A baffle is fixedly provided on the side of the extension base away from the fixed base, and the fixed base drives the extension base to extend via the drive baffle. A locking unit is provided on the extension base. When the extension base is not extended, the locking unit locks the extension base to the fixed base. When the extension base extends, the locking unit unlocks the extension base from the fixed base and locks the extension base to the sliding seat.

[0006] As a further embodiment of the present invention, the locking unit includes a sliding bar fixedly disposed on the extension base, the sliding bar being disposed along the sliding direction of the sliding seat; a first sliding groove is formed on the sliding seat, the first sliding groove being slidably connected to the sliding bar; the locking unit further includes a locking wedge block horizontally slidably mounted on the sliding bar, the sliding direction of the locking wedge block being perpendicular to the sliding direction of the sliding seat; a first spring is disposed between the locking wedge block and the sliding bar; a first blocking block is fixedly disposed on the first sliding groove, the first blocking block being used to drive the locking wedge block to retract when the first sliding groove moves toward the edge of the fixed base; a second blocking block is fixedly mounted on the fixed base, the second blocking block being used to drive the locking wedge block to retract when the first sliding groove moves toward the center of the fixed base.

[0007] As a further embodiment of the present invention, the transmission unit includes two first synchronous wheels rotatably mounted on the two sides of the extension base and two second synchronous wheels rotatably mounted at the center of the fixed base. The first synchronous wheels and the second synchronous wheels are connected by a transmission chain, which is arranged in a parallelogram shape. The second synchronous wheels are rotatably mounted on a first sliding block, the first sliding block is horizontally slidably mounted on a second sliding groove, and the second sliding groove is fixedly mounted at the center of the fixed base. The second sliding groove is arranged along a sliding direction perpendicular to the sliding seat. A first sliding platform is fixedly mounted on both the sliding seat and the counterweight. A second sliding block is horizontally slidably mounted on the first sliding platform, and the sliding direction of the second sliding block is the same as that of the first sliding block. A pin is fixedly mounted on the second sliding block and is inserted into the transmission chain.

[0008] As a further embodiment of the present invention, the transmission unit further includes a tensioning assembly; the tensioning assembly includes a hinge rod, one end of which is hinged to the first sliding block and the other end of which is hinged to the third sliding block, the third sliding block being horizontally slidably mounted on the extension base, the sliding direction of the third sliding block being consistent with the sliding direction of the sliding seat; a second spring is provided between the third sliding block and the extension base.

[0009] As a further embodiment of the present invention, it includes front and rear guardrails fixedly installed on a fixed base and left and right guardrails fixedly installed on an extension base, wherein the left and right guardrails are horizontally slidably installed on the front and rear guardrails.

[0010] As a further embodiment of the present invention, the sliding seat is provided with a storage box for placing tools, and the storage box is provided with a seating area for staff to rest.

[0011] As a further embodiment of the present invention, the counterweight is a suspended counterweight ball.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This invention, by incorporating extension mechanisms on both sides of the suspended platform, allows for adjustment of the movable area on the platform according to actual needs, increasing the worker's actual working range and improving the product's applicability. Furthermore, this invention enables the counterweight to move in the opposite direction when the worker moves the suspended platform, allowing the platform to self-balance and reducing lifting difficulty.

[0014] When the extension base is not extended, this invention locks the extension base and the fixed base together to prevent the extension base from moving and to prevent workers from losing their balance due to touching or leaning on the moving extension base, thus creating a safety hazard. When the extension base extends, the extension base and the fixed base are unlocked, and the extension base and the sliding seat are locked together to prevent the extension mechanism from opening completely at once. This allows the extension amount of the extension mechanism to be adjusted according to actual needs, minimizing the area of ​​the suspended platform while meeting the working range requirements of the workers, making the suspended platform easier to balance.

[0015] This invention utilizes a counterweight as a vibration damper. When the suspended platform vibrates, the swaying of the counterweight reduces the vibration of the suspended platform, thereby stabilizing it. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a window cleaning machine used for the exterior glass of high-rise buildings.

[0018] Figure 2 This is a schematic diagram of the structure of the present invention after removing the front and rear guardrails and the left and right guardrails;

[0019] Figure 3 For the present invention Figure 2 A magnified view of part A in the middle;

[0020] Figure 4 This is a schematic diagram of the structure when the sliding seat is detached from the fixed base according to the present invention;

[0021] Figure 5 For the present invention Figure 4 A magnified view of part B in the middle section;

[0022] Figure 6 This is a schematic diagram of the transmission unit of the present invention;

[0023] Figure 7 For the present invention Figure 6 A magnified view of part C in the middle;

[0024] Figure 8 This is a schematic diagram of the internal structure of the fixed base and the extension base of the present invention.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 11-Fixed base, 12-Sliding seat, 13-Counterweight block, 21-Extendable base, 22-Baffle, 31-Sliding bar, 32-First sliding groove, 33-Locking wedge, 34-First spring, 35-First blocking block, 36-Second blocking block, 41-First synchronous pulley, 42-Second synchronous pulley, 43-Transmission chain, 44-First sliding block, 45-Second sliding groove, 46-First sliding platform, 47-Second sliding block, 48-Pin, 51-Hinge rod, 52-Third sliding block, 53-Second spring, 61-Front and rear guardrails, 62-Left and right guardrails, 63-Storage box, 64-Seat area. Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-8 This invention provides a window cleaning machine for the exterior glass of high-rise buildings, including a suspended platform, such as... Figure 1 As shown, Figure 2As shown, the suspended platform includes a fixed base 11 for hoisting. Extension mechanisms are provided on both the left and right sides of the fixed base 11 to expand its area. A self-balancing mechanism is also provided on the fixed base 11. The self-balancing mechanism includes a sliding seat 12 and a counterweight 13 horizontally slidably mounted on the fixed base 11. The sliding seat 12 and the counterweight 13 are connected by a transmission unit. The transmission unit drives the counterweight 13 to move in the opposite direction to the sliding seat 12 when the sliding seat 12 moves. The sliding seat 12 is used for workers to stand on.

[0029] In actual work, the large distance between the boom and the suspended platform caused by super high-rise buildings makes it difficult to adjust the workers' working range using the boom. In this case, the size of the movable area on the suspended platform determines the workers' actual working range. However, simply setting up an excessively large suspended platform not only increases costs, but the large area, combined with the workers' movement on it, also makes it difficult to balance the platform during hoisting, increasing the difficulty of the operation. Figure 1 , Figure 2 As shown, during actual operation, the worker stands on the sliding seat 12, which is located at the center of the fixed base 11. The counterweight 13 is also located at the center of the fixed base 11. The worker can move the sliding block according to actual operational needs. For example, the worker can hold a handrail and use the reaction force to drive the sliding seat 12 to slide on the fixed base 11; or the worker can directly use a drive motor to drive the sliding seat 12 to slide on the fixed base 11. When the worker moves the sliding seat 12, the counterweight 13 moves in the opposite direction to ensure the overall balance of the suspended platform. When it is necessary to increase the worker's working range, the extension mechanism is driven to extend, expanding the area of ​​the fixed base 11 and increasing the worker's range of motion. This invention, by setting extension mechanisms on both sides of the suspended platform, allows the movable area on the platform to be adjusted according to actual needs, increasing the worker's actual working range and improving the product's applicability. Furthermore, this invention can drive the counterweight 13 to move in the opposite direction when the worker moves the suspended platform, enabling the platform to self-balance and reducing the difficulty of hoisting.

[0030] As a further embodiment of the present invention, such as Figure 2As shown, the extension mechanism includes extension bases 21 that slide horizontally on both sides of the fixed base 11. A baffle 22 is fixedly installed on the side of the extension base 21 away from the fixed base 11. The fixed base 11 drives the extension base 21 to extend via the baffle 22. A locking unit is provided on the extension base 21. When the extension base 21 is not extended, the locking unit locks the extension base 21 to the fixed base 11, thus preventing the extension base 21 from moving and preventing workers from losing their balance due to touching or leaning on the moving extension base 21, which could create a safety hazard. When the extension base 21 extends, the locking unit unlocks the extension base 21 from the fixed base 11 and locks the extension base 21 to the sliding seat 12. This prevents the extension mechanism from opening completely at once, allowing the extension amount to be adjusted according to actual needs. While meeting the work range requirements of the workers, the area of ​​the suspended platform can be minimized, making the platform easier to balance.

[0031] As a further embodiment of the present invention, such as Figure 3 , Figure 5 As shown, the locking unit includes a sliding bar 31 fixedly mounted on the extension base 21, the sliding bar 31 being arranged along the sliding direction of the sliding seat 12; the sliding seat 12 has a first sliding groove 32, the first sliding groove 32 being slidably connected to the sliding bar 31. Figure 3 As shown, the locking unit further includes a locking wedge 33 horizontally slidably mounted on the sliding bar 31, the sliding direction of the locking wedge 33 being perpendicular to the sliding direction of the sliding seat 12; a first spring 34 is provided between the locking wedge 33 and the sliding bar 31; as shown Figure 5 As shown, a first blocking block 35 is fixedly disposed on the first sliding groove 32. The first blocking block 35 is used to drive the locking wedge block 33 to retract when the first sliding groove 32 moves toward the edge of the fixed base 11; Figure 3 As shown, a second blocking block 36 is fixedly installed on the fixed base 11. The second blocking block 36 is used to drive the locking wedge block 33 to retract when the first sliding groove 32 moves toward the center of the fixed base 11.

[0032] When the present invention is in operation, such as Figure 3 , Figure 4 As shown, when the operator needs the extension mechanism to extend, the operator drives the sliding seat 12 to move towards the edge of the fixed base 11. At this time, the extension base 21 and the fixed base 11 are locked together. The specific locking condition is as follows: Figure 3As shown, because the locking wedge 33 on the sliding bar 31 is blocked by the second blocking block 36 on the fixed base 11, the sliding bar 31 is restricted to move to the left (i.e., to the outside of the fixed base 11). Because the sliding bar 31 is fixedly mounted on the extension base 21, the extension base 21 is restricted to move to the left (i.e., to the outside of the fixed base 11), and the extension base 21 and the fixed base 11 are in a locked state. Because the sliding bar 31 is limited to a stationary position, while the sliding seat 12 is moving, and the first sliding groove 32 is slidably connected to the sliding bar 31, the first sliding groove 32 on the sliding seat 12 and the sliding bar 31 undergo relative displacement. When the sliding seat 12 moves to the edge of the fixed base 11, as... Figure 3 , Figure 5 As shown, at this time, the first blocking block 35 on the first sliding groove 32 moves to the locking wedge 33 and drives the locking wedge 33 to retract, and the first spring 34 retracts. After the locking wedge 33 retracts, the first blocking block 35 on the sliding seat 12 moves to the left past the locking wedge 33, and the sliding seat 12 drives the extension base 21 to move to the left through the drive baffle 22, so that the locking wedge 33 is located to the left of the second blocking block 36 after retraction and reset, and the locking wedge 33 is not restricted to move by the second blocking block 36. At this time, the extension base 21 is unlocked from the fixed base 11. At the same time, because the left side of the sliding seat 12 is restricted by the baffle 22 of the extension base 21, and the right side is restricted by the locking wedge 33 (the first blocking block 35 on the sliding seat 12 is restricted to move to the right by the locking wedge 33), the extension base 21 is locked to the sliding seat 12. Thus, when the operator continues to drive the sliding seat 12 to move outward to the fixed base 11, the extension base 21 also extends the corresponding distance. Note that in this invention, the first blocking block 35 and the second blocking block 36 must be staggered in height to complete the above-mentioned switching action. Conversely, when the extended base 21 returns to its original position, the specific switching process of the locking unit is as follows: Figure 3 , Figure 5 As shown, the first blocking block 35 and the locking wedge 33, which are in the locked state, move to the second blocking block 36. The locking wedge 33 continues to move to the right and is retracted by the second blocking block 36. After the locking wedge 33 retracts, the first blocking block on the sliding seat 12 moves to the right past the locking wedge 33, and the extension base 21 continues to move to the right due to inertia. This causes the locking wedge 33 to be located to the right of the second blocking block 36 after retraction and reset. The locking wedge 33 completes the switching, allowing the extension base 21 to be locked back to the fixed base 11.

[0033] As a further embodiment of the present invention, such as Figure 6As shown, the transmission unit includes two first synchronous pulleys 41 rotatably mounted on the two sides of the extension base 21 and two second synchronous pulleys 42 rotatably mounted at the center of the fixed base 11. The first synchronous pulleys 41 and the second synchronous pulleys 42 are connected by a transmission chain 43, which is arranged in a parallelogram shape. Figure 6 , Figure 8 As shown, the second synchronous wheel 42 is rotatably mounted on the first sliding block 44, the first sliding block 44 is horizontally slidably mounted on the second sliding groove 45, the second sliding groove 45 is fixedly mounted at the center of the fixed base 11, and the second sliding groove 45 is arranged along a sliding direction perpendicular to the sliding seat 12; as shown Figure 5 , Figure 7 As shown, a first sliding platform 46 is fixedly installed on both the sliding seat 12 and the counterweight 13. A second sliding block 47 is horizontally slidably installed on the first sliding platform 46. The sliding direction of the second sliding block 47 is the same as the sliding direction of the first sliding block 44. A pin 48 is fixedly installed on the second sliding block 47. The pin 48 is inserted into the transmission chain 43.

[0034] As a further embodiment of the present invention, the transmission unit further includes a tensioning component; such as Figure 6 , Figure 7 As shown, the tensioning assembly includes a hinge rod 51, one end of which is hinged to the first sliding block 44, and the other end is hinged to the third sliding block 52. The third sliding block 52 is horizontally slidably mounted on the extension base 21, and the sliding direction of the third sliding block 52 is consistent with the sliding direction of the sliding seat 12. A second spring 53 is provided between the third sliding block 52 and the extension base 21.

[0035] like Figure 5 , Figure 6 As shown, when the sliding seat 12 moves, for example, to the left, the present invention... Figure 6 The first sliding platform 46, fixedly mounted on the sliding base 12 as shown in the upper left corner, moves with the sliding base 12. At this time, the second sliding block 47, slidably mounted on it, also moves to the left. Because a pin 48 is fixedly mounted on the second sliding block 47 and is inserted into the transmission chain 43, when the second sliding block 47 moves to the left, the pin 48 pulls the transmission chain 43 to rotate. The rotation of the transmission chain 43 drives... Figure 6The first sliding platform 46, fixedly mounted on the counterweight 13 as shown in the lower right corner, moves to the right. This invention drives the counterweight 13 to move in the opposite direction when the sliding seat 12 moves, enabling the suspended platform to self-balance and reducing the difficulty of hoisting. Because the transmission route of the transmission chain 43 is arranged in a parallelogram, its transmission direction is not completely parallel to the moving directions of the sliding seat 12 and the counterweight 13. Therefore, a second sliding block 47 is provided to slide on the first sliding platform 46 to compensate for this.

[0036] like Figure 6 As shown, the present invention hinges the left and right extension bases 21 together via hinge rods 51 to form a closed planar four-bar linkage. When the sliding seat 12 drives one side of the extension base 21 to move outward, the other side of the extension base 21 is simultaneously driven to move outward by the same distance via the hinge rods 51, providing space for the movement of the counterweight 13 and ensuring the balance of the basket when the extension bases 21 are extended. Figure 6 As shown, in this invention, the first synchronous pulley 41 is rotatably mounted on the extension base 21. When the extension base 21 is not extended, the distance between the two first synchronous pulleys 41 is fixed, and the transmission chain 43 drives normally. When the extension base 21 extends, the distance between the two first synchronous pulleys 41 changes. At this time, the pressure applied to the first sliding block 44 by the hinge rod 51 and the transmission chain 43 causes the first synchronous pulleys 41 on the upper and lower sides, as shown in Figure 6, to move closer to each other, allowing the transmission chain 43 to continue driving between the two first synchronous pulleys 41 that are far apart. Thus, when the sliding seat 12 extends with the extension base 21, the two second synchronous pulleys 42 move closer to each other, and the sliding seat 12 locks with the extension base 21. Therefore, the sliding seat 12 will move outward synchronously with the transmission chain 43 and the first synchronous pulley 41 on the left side, while the counterweight 13 on the other side will also move outward synchronously with the transmission chain 43 and the first synchronous pulley 41 on the right side. This ensures that the self-balancing mechanism can still maintain the balance of the basket when the extension base 21 extends. Furthermore, the transmission unit of this invention employs a flexible transmission method using a transmission chain 43. If a rigid transmission method using a rack and pinion were employed, the rack and pinion might extend out of the basket, increasing the floor space required. During operation, such as... Figure 7 As shown, the third sliding block 52 of the present invention, driven by the second spring 53, always tends to move to the left. Thus, the third sliding block 52, through the hinge rod 51, always tends to drive the second synchronous wheel 42 to move outward, keeping the transmission chain 43 taut. The tensioning assembly of the present invention is designed so that when the extended base 21 returns to its original position, the tensioning assembly utilizes the return of the second spring 53 to ensure that the second synchronous wheel 42 can tension the transmission chain 43, ensuring that the transmission chain 43 can transmit power normally. Figure 8As shown, in order to prevent the first sliding platform 46 from being interfered with by the second synchronous wheel 42 when sliding left and right, both the fixed base 11 and the sliding base are configured as upper and lower layers. The first sliding platform 46 on the sliding base 12 and the first sliding platform 46 on the counterweight block 13 are respectively installed on the upper and lower layers, as shown. Figure 6 As shown, the first sliding platform 46 on the sliding seat 12 is installed on the upper side of the upper layer of the fixed base 11, so the second synchronous wheel 42 on the upper side is rotatably installed on the lower fixed base 11, and the tensioning component on the upper side is also set on the lower extension base 21; the first sliding platform 46 on the counterweight 13 is installed on the lower side of the lower layer of the fixed base 11, so the second synchronous wheel 42 on the lower side is rotatably installed on the upper fixed base 11, and the tensioning component on the lower side is also set on the upper extension base 21.

[0037] As a further embodiment of the present invention, such as Figure 1 As shown, the system includes front and rear guardrails 61 fixedly mounted on a fixed base 11 and left and right guardrails 62 fixedly mounted on an extendable base 21. The left and right guardrails 62 are horizontally slidably mounted on the front and rear guardrails 61. The purpose of this arrangement is to ensure that the guardrails can still provide protection when the extendable base 21 is extended.

[0038] As a further aspect of the invention, the sliding seat 12 is provided with a storage box 63 for placing tools, and the storage box 63 is provided with a seating area 64 for workers to rest. This arrangement is intended to provide workers with a place to store their items and a place for them to rest, thus providing convenience for workers.

[0039] As a further embodiment of the present invention, the counterweight 13 is a suspended counterweight ball. Figure 1 As shown, this arrangement is to allow the counterweight 13 to act as a vibration damper. Because the suspended platform will inevitably vibrate during hoisting operations, affecting the workers on it, this invention utilizes the counterweight 13 as a vibration damper. When the suspended platform vibrates, the swaying of the counterweight 13 reduces the vibration of the suspended platform, thus stabilizing it.

Claims

1. A window cleaning machine for exterior glass of high-rise buildings, characterized in that: The system includes a suspended platform, which includes a fixed base (11) to be suspended. Extension mechanisms are provided on both the left and right sides of the fixed base (11) to expand its area. A self-balancing mechanism is also provided on the fixed base (11). The self-balancing mechanism includes a sliding seat (12) and a counterweight (13) horizontally slidably mounted on the fixed base (11). The sliding seat (12) and the counterweight (13) are connected by a transmission unit. The transmission unit is used to drive the counterweight (13) to move in the opposite direction to the sliding seat (12) when the sliding seat (12) moves. The sliding seat (12) is used for workers to stand on. The extension mechanism includes an extension base (21) that slides horizontally on both sides of a fixed base (11). A baffle (22) is fixedly provided on the side of the extension base (21) away from the fixed base (11). The fixed base (11) drives the extension base (21) to extend through the baffle (22). A locking unit is provided on the extension base (21). When the extension base (21) is not extended, the locking unit locks the extension base (21) to the fixed base (11). When the extension base (21) extends, the locking unit unlocks the extension base (21) from the fixed base (11) and locks the extension base (21) to the sliding seat (12). The locking unit includes a sliding bar (31) fixedly mounted on the extension base (21), the sliding bar (31) being arranged along the sliding direction of the sliding seat (12); a first sliding groove (32) is formed on the sliding seat (12), the first sliding groove (32) being slidably connected to the sliding bar (31); the locking unit also includes a locking wedge (33) horizontally slidably mounted on the sliding bar (31), the sliding direction of the locking wedge (33) being perpendicular to the sliding direction of the sliding seat (12); the locking wedge (33) and the sliding seat (12) are connected to the sliding base (21). A first spring (34) is provided between the sliding bars (31); a first blocking block (35) is fixedly provided on the first sliding groove (32), and the first blocking block (35) is used to drive the locking wedge (33) to retract when the first sliding groove (32) moves toward the edge of the fixed base (11); a second blocking block (36) is fixedly installed on the fixed base (11), and the second blocking block (36) is used to drive the locking wedge (33) to retract when the first sliding groove (32) moves toward the center of the fixed base (11); The transmission unit includes two first synchronous pulleys (41) rotatably mounted on the two sides of the extension base (21) and two second synchronous pulleys (42) rotatably mounted at the center of the fixed base (11). The first synchronous pulleys (41) and the second synchronous pulleys (42) are connected by a transmission chain (43) arranged in a parallelogram shape. The second synchronous pulleys (42) are rotatably mounted on a first sliding block (44), and the first sliding block (44) is horizontally slidably mounted on a second sliding groove (45). The second sliding groove (45) is fixed. The second sliding groove (45) is installed at the center of the fixed base (11) along the sliding direction perpendicular to the sliding seat (12); a first sliding platform (46) is fixedly installed on the sliding seat (12) and the counterweight (13); a second sliding block (47) is horizontally slidably installed on the first sliding platform (46); the sliding direction of the second sliding block (47) is the same as the sliding direction of the first sliding block (44); a pin (48) is fixedly installed on the second sliding block (47); the pin (48) is inserted into the transmission chain (43).

2. A window cleaning machine for exterior glass of high-rise buildings according to claim 1, characterized in that: The transmission unit further includes a tensioning assembly; the tensioning assembly includes a hinge rod (51), one end of which is hinged to the first sliding block (44), and the other end is hinged to the third sliding block (52). The third sliding block (52) is horizontally slidably mounted on the extension base (21), and the sliding direction of the third sliding block (52) is consistent with the sliding direction of the sliding seat (12); a second spring (53) is provided between the third sliding block (52) and the extension base (21).

3. A window cleaning machine for exterior glass of high-rise buildings according to claim 2, characterized in that: It includes front and rear guardrails (61) fixedly installed on a fixed base (11) and left and right guardrails (62) fixedly installed on an extension base (21), wherein the left and right guardrails (62) are horizontally slidably installed on the front and rear guardrails (61).

4. A window cleaning machine for exterior glass of high-rise buildings according to claim 1, characterized in that: The sliding seat (12) is provided with a storage box (63) for placing tools, and the storage box (63) is provided with a seating area (64) for staff to rest.

5. A window cleaning machine for exterior glass of high-rise buildings according to claim 1, characterized in that: The counterweight (13) is a suspended counterweight ball.

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