Rectangular pipe connecting device for steel structure hoistway frame

Abstract

The utility model discloses a rectangular pipe connecting device for a steel structure hoistway frame, which is characterized in that a rectangular pipe connecting nut head is welded with the end parts of a right rectangular stand column pipe and a left rectangular stand column pipe of the hoistway frame, and the right rectangular stand column pipe and the left rectangular stand column pipe of the hoistway frame are arranged in a hoistway. Rectangular pipe connecting counter bore heads are welded to the ends of the hoistway frame rectangular front cross beam, the reinforcing cross arm, the hoistway frame rectangular rear cross beam and the hoistway beam. Rectangular pipe connecting nut heads and the rectangular pipe connecting counter bore heads are connected and fastened through hexagon socket screws. The rectangular pipe connecting nut head and the rectangular pipe connecting counter bore head form a connecting piece through an inner hexagon bolt. A rectangular pipe nut head and a rectangular pipe connecting counter bore head of the connecting piece are welded and fixed to a shaft beam and a shaft column pipe of a shaft frame body respectively to form the shaft frame body, and the shaft frame body is provided with a decorative plate, a wall plate, an electric appliance, a hydraulic piece and a cable to form the elevator. The utility model has the advantages of low cost, on-site product installation, no need of electric welding, paint spraying, polishing, trimming and the like in on-site installation, safety and reliability.

Description

Technical Field

[0001] This utility model belongs to the category of elevators, and in particular, it is a rectangular tube connecting device for a steel structure shaft frame. Background Technology

[0002] With the increasing popularity of home elevators, many older and newly built multi-story residential buildings have a strong demand for them. Due to historical reasons, these buildings generally do not have pre-installed elevator shafts. Installing an elevator requires a steel structure shaft, which is typically constructed using the space of a skylight. Current techniques for adding steel shafts mostly involve on-site cutting, welding, grinding, and painting. The resulting noise, dust, and odors cause significant pollution to the residents' living environment. Therefore, this connection technology aims to completely solve these problems. Existing patent announcement number 1: CN 222331273U, invention title: An elevator shaft frame, including a base, a support seat fixedly connected to the upper surface of the base, a buffer pressure rod fixedly connected to the upper surface of the support seat, two support steel plates fixedly connected to the upper surface of the base, three first bolts threadedly connected to the upper surface of each support steel plate, four first support steel frames fixedly connected to the upper surface of the base, a support cross plate welded to the side of each first support steel frame that is close to each other, a first steel frame connecting sleeve fixedly connected to the upper surface of each first support steel frame, and a second support steel frame fixedly connected to the inner wall of each first steel frame connecting sleeve. Existing patent announcement number 2: CN202420461572.9, invention title: An elevator guide rail bracket, including a first bracket. Through the structural design of the adjustment mechanism, the user moves a bolt into the movable hole. When the bolt moves into the movable hole, the user moves the first bracket to the corresponding position, and the threaded hole inside the first bracket moves to the surface of the bolt. After the first bracket is moved, the user tightens the nut on the bolt.

[0003] This fixed design minimizes the installation space of the bracket to its limit, ensuring sufficient space for wrench installation. The connection process is convenient, adjustments are stable, and material usage is effectively saved for stable installation. It solves the problem of overly cumbersome installation of elevator guide rail brackets, which reduces the practicality of elevator guide rail installation for users, increases the workload of users, reduces the stability adjustment issues after installation, and improves the efficiency of elevator guide rail installation. The structure of existing technologies differs from the structural features of this patented technology. Summary of the Invention

[0004] The purpose of this utility model is to provide a quick connection device for steel rectangular tubes. This device consists of a connecting nut head and a connecting countersunk head connected by hexagonal socket head cap screws. The rectangular tube connecting nut head is welded to the curved pipe column of the shaft frame, and the rectangular tube connecting countersunk head is welded to the crossbeam. The crossbeam is installed on-site as a movable component and connected to the rectangular tube connecting countersunk head and the rectangular tube connecting nut head using hexagonal socket head cap screws. The connecting nut head and the connecting countersunk head are welded and fixed to the ends and connecting parts of the rectangular tube shaft column. The connecting nut head is welded and fixed to the large and small faces of the rectangular tube of the shaft column, and the connecting countersunk head is welded and fixed to both ends of the rectangular tube of the crossbeam. The column and the crossbeam are then connected using hexagonal socket head cap screws. The rectangular tube connecting nut head is welded to the shaft frame column and installed in the shaft as a fixing component. The rectangular tube connecting countersunk head is welded to the beam, and the beam is connected to the rectangular tube connecting nut head using hexagonal socket head cap screws to form the shaft frame. The modular installation of the hoistway frame eliminates the need for pre-assembling the composite frame and then transporting it to the hoistway as a whole. On-site assembly and transport are convenient and easy to install, eliminating the need for welding, sawing, grinding, and painting in traditional installation methods. This allows for on-site assembly without damaging the building's environment. This steel hoistway is also suitable for elevators in low- to mid-rise buildings.

[0005] The technical solution of this utility model is as follows: a rectangular tube connecting device for a steel structure shaft frame, comprising a rectangular tube connecting nut head, a rectangular tube connecting countersunk head, an internal hex bolt, a top surface of the nut head groove, a side surface of the nut head groove, a side surface of the countersunk head groove, a top surface of the countersunk head groove, a countersunk hole, a blind hole, a junction line, a shaft frame connection, a shaft frame body, a rectangular front crossbeam of the shaft frame, a reinforcing crossarm, a reinforcing connection, a crossarm connection, a right rectangular column tube of the shaft frame, a left rectangular column tube of the shaft frame, a rectangular rear crossbeam of the shaft frame, a first shaft column, a second shaft column, a third shaft column, a shaft beam, a door, a nut head welding surface, a countersunk head welding surface, a connector, a first shaft beam, and a second shaft beam, characterized in that the rectangular... The connecting nut head 1 and the countersunk head 2 of the connecting rectangular tube are connected by hex bolts 3 to form a connector 28. Connector 28 is installed on the hoistway frame 13. The right rectangular column tube 18, the left rectangular column tube 19, the front rectangular crossbeam 14, the rear rectangular crossbeam 20, the reinforcing crossarm 15, the first hoistway beam 29, and the second hoistway beam 30 are connected to form the elevator hoistway frame 13. The first hoistway beam 29 and the second hoistway beam 30 are installed between the right rectangular column tube 18 and the left rectangular column tube 19 of the hoistway frame. The rear rectangular crossbeam 20 of the hoistway frame is installed between the right rectangular column tube 18 and the left rectangular column tube 19 of the hoistway beam, with equal height spacing. The rectangular front crossbeam 14 of the hoistway frame is installed between the right rectangular column tube 18 and the left rectangular column tube 19 of the hoistway frame, above and below the door 25. It is connected to the nut head 1 and the countersunk head 2 via rectangular tubes, secured with hex bolts 3. The reinforcing crossbeam 15, the rectangular front crossbeam 14, and the rectangular rear crossbeam 20 are installed between the first hoistway beam 29 and the second hoistway beam 30. They are also secured to the nut head 1 and the countersunk head 2 via rectangular tubes, secured with hex bolts 3. The nut head 1 has a nut head groove corner top surface 4 and a nut head groove corner side surface 5, which are perpendicular to each other and form an L-shape. The countersunk head 2 has a countersunk head groove corner side surface 6 and a countersunk head groove corner top surface 7, which are perpendicular to each other and form an L-shape. The countersunk head 2 has a countersunk hole 8. The rectangular tube connecting nut head 1 has a blind hole 9. The internal threads of the countersunk hole 8 and blind hole 9 engage with the external threads of the hexagon socket head cap screw 3. The top surface 4 of the nut head groove corner mates with the top surface 7 of the countersunk hole head groove corner, and the side surface 5 of the nut head groove corner mates with the side surface 6 of the countersunk hole head groove corner. The hexagon socket head cap screw 3 extends from the countersunk hole 8 to the blind hole 9 and is tightened by thread engagement. The front of the door 25 of the hoistway frame 13 is an empty frame. On both sides and behind the door 25 are the right rectangular column tube 18 and the left rectangular column tube 19 of the hoistway frame. The left rectangular column tube 19 and the right rectangular column tube 18 of the hoistway frame are equidistantly positioned vertically with the first hoistway beam 29 and the second hoistway beam 30. The right rectangular column tube 18 and the left rectangular column tube 19 of the hoistway frame are equidistantly positioned with the rectangular rear crossbeam 20 of the hoistway frame behind the door 25.The nut head welding surface 26 of the rectangular tube connecting nut head 1 is welded to the inner side of the top of the third shaft column 23, the top of the first shaft column 21, the top of the second shaft column 22, and the inner side of the bottom of the first shaft column 21. It is also welded to the upper and lower ends of the right rectangular column tube 18 and the left rectangular column tube 19 of the shaft frame 13. The countersunk head welding surface 27 of the rectangular tube connecting countersunk head 2 is welded to the bottom of the second shaft column 22, the bottom of the third shaft column 23, the outer end of the shaft beam 24, the outer end of the rectangular front crossbeam 14 of the shaft frame, the outer end of the reinforcing crossbeam 15, the outer end of the rectangular rear crossbeam 20 of the shaft frame, and the outer end of the crossbeam connection 17. The first shaft beam 29 and the second shaft beam 30 are connected to the rectangular tube connecting countersunk head 2, which is used to fasten the first shaft column 21, the second shaft column 22, the third shaft column 23, the right rectangular column tube 18 of the shaft frame, and the left rectangular column tube 19 of the shaft frame. The rectangular tube connecting countersunk head 2 at the bottom of the third shaft column 23 is connected to the rectangular tube connecting nut head 1 of the second shaft column 22. The rectangular tube connecting nut head 1 on the inner side of the top of the third shaft column 23 is connected to the rectangular tube connecting countersunk head 2 at the outer end of the shaft beam 24. Then, hexagonal bolts 3 are inserted into the countersunk hole 8 and the blind hole 9 to secure them. A shaft frame 13, consisting of the top of the first shaft column 21, the second shaft column 22, and the third shaft column 23, is installed inside the shaft. Rectangular tube connecting nuts 1 at the upper and lower ends of the right rectangular column tube 18 and the left rectangular column tube 19 of the shaft frame are respectively engaged with the rectangular front crossbeam 14, the rectangular rear crossbeam 20, the reinforcing crossbeam 15, the crossbeam connector 17, the door 25, the outer ends of the first shaft beam 29 and the second shaft beam 30, and the already installed rectangular tube connecting countersunk heads 2 at the outer ends of the first shaft beam 29 and the second shaft beam 30, and secured with hexagonal socket head caps 3. The shaft frame 13 is installed inside the shaft, and side panels, wall panels, electrical circuit boards, doors, decorative panels, motors, and hydraulic components are added to the sides, rear, top, and bottom of the shaft frame 13.

[0006] The first shaft beam 29, the second shaft beam 30, the rectangular front crossbeam 14 of the shaft frame, the rectangular rear crossbeam 20 of the shaft frame, and the rectangular tube connecting countersunk head 2 welded to the ends of the reinforcing crossbeam 15 are connected and tightened by internal hexagon bolts 3 through the internal threads of the countersunk hole 8 and the blind hole 9.

[0007] 1. Rectangular tube connecting nut head; 2. Rectangular tube connecting countersunk head with smooth, burr-free sides.

[0008] The countersunk hole 8 and blind hole 9 have internal threaded holes that engage with the external thread of the socket head cap screw 3. There is one or more countersunk holes 8 and blind holes 9, and one or more socket head cap screws 3.

[0009] The hoistway beam 24 includes a first hoistway beam 29, a second hoistway beam 30, a rectangular front crossbeam 14 of the hoistway frame, a rectangular rear crossbeam 20 of the hoistway frame, and a reinforcing crossbeam 15.

[0010] The nut head welding surface 26 of the rectangular tube connecting nut head 1 is welded to both sides and the rear end of the door 25 and the right rectangular column tube 18 and the left rectangular column tube 19 of the hoistway frame. The countersunk head welding surface 27 is welded to the front rectangular crossbeam 14, the rear rectangular crossbeam 20, the hoistway beam 24, the first hoistway column 21, the second hoistway column 22, and the third hoistway column 23 of the hoistway frame. The countersunk hole 8 and blind hole 9 of the rectangular tube connecting nut head 1 face into the inner cavity of the door 25.

[0011] The vertical height of the shaft frame 13 is formed by splicing together multiple first shaft columns 21, second shaft columns 22, and third shaft columns 23.

[0012] The hoistway frame 13 is installed in the hoistway. The hoistway frame 13 has panels, wall panels, circuit boards, decorative panels, motors, and hydraulic components installed on its sides, back, top, and bottom to form the elevator. The hoistway frame 13 has four vertically distributed columns, namely the right rectangular column tube 18 and the left rectangular column tube 19, installed in the hoistway. The first hoistway beam 29, the second hoistway beam 30, the rectangular front crossbeam 14, the rectangular rear crossbeam 20, and the reinforcing crossbeam 15 are fixed at both ends by rectangular tube connecting nuts 1 and rectangular tube connecting countersunk heads 2 with hexagonal bolts 3. The rectangular tube connecting nuts 1, rectangular tube connecting countersunk heads 2, hexagonal bolts 3, and hoistway frame 13 are assembled and installed on site.

[0013] Compared with existing technologies, this utility model has outstanding advantages: A rectangular tube connected to a nut head is fixed to the column of the shaft frame, and a rectangular tube connected to a countersunk head is fixed to the crossbeam. The shaft column is installed in the shaft. During on-site installation, hexagonal bolts are used to connect the rectangular tube to the countersunk head and the rectangular tube connected to the nut head to form the shaft frame. The shaft frame is installed in the shaft, achieving on-site assembly and installation, reducing the floor space required, facilitating installation, and eliminating the hassle of cutting, grinding, welding, and painting required for traditional shaft frame assembly. It also eliminates the safety hazards associated with on-site welding, resulting in a clean and hygienic installation site. The design is advanced, novel, low-cost, and widely applicable. It can be installed and used in low- and mid-rise buildings, has a beautiful and elegant appearance, is easy to manufacture, quick to install, simple and sturdy, highly practical, and safe and reliable. Attached Figure Description

[0014] Figure 1 This is a front view diagram of the connector assembly of this utility model.

[0015] Figure 2 This is an isometric schematic diagram of the rectangular tube connecting nut head countersunk head of this utility model.

[0016] Figure 3 This is a front view schematic diagram of the rectangular tube connecting nut head countersunk head installation of this utility model.

[0017] Figure 4This is a schematic diagram showing the installation of the rectangular tube connecting nut head countersunk head according to this utility model.

[0018] Figure 5 This is an isometric schematic diagram of the rectangular tube connection countersunk head of the well frame according to this utility model.

[0019] Figure 6 This is a front view schematic diagram of the rectangular tube connection countersunk head of the well frame according to this utility model.

[0020] Figure 7 This is a left-side view of the rectangular tube connection countersunk head of the well frame according to this utility model.

[0021] Figure 8 This is a bottom view schematic diagram of the rectangular tube connection countersunk head of the well frame according to this utility model.

[0022] Figure 9 This is an isometric schematic diagram of the rectangular tube connecting nut head of the well frame according to this utility model.

[0023] Figure 10 This is a front view schematic diagram of the rectangular tube connecting nut head of the well frame according to this utility model.

[0024] Figure 11 This is a left-side view of the rectangular tube connecting nut head of the well frame according to this utility model.

[0025] Figure 12 This is a bottom view of the rectangular tube connecting nut head of the well frame according to this utility model.

[0026] Figure 13 This is an isometric schematic diagram of the rectangular tube shaft frame of this utility model.

[0027] Figure 14 This is a front view schematic diagram of the rectangular tube shaft frame of this utility model.

[0028] Figure 15 This is a right-side view of the rectangular tube shaft frame of the present invention.

[0029] Figure 16 This is a top view of the rectangular tube shaft frame of the present invention.

[0030] Figure 17 This is a schematic diagram of the rectangular tube shaft frame of this utility model, with the nut head and countersunk head installed between the two ends of the shaft beam.

[0031] Figure 18 This is an isometric schematic diagram showing the installation of countersunk head hexagonal bolts at corresponding positions at both ends of the rectangular tube shaft beam of the shaft frame of this utility model.

[0032] Figure 19This is an isometric view of the rectangular tube countersunk head and nut head of the well frame of this utility model, which are installed using internal hex bolts.

[0033] Figure 20 This is an isometric schematic diagram of the nut head, countersunk head, and internal hex bolt parts of this utility model.

[0034] Figure 21 This is a front view schematic diagram of the shaft frame structure and shaft column connection of this utility model.

[0035] Figure 22 This is a right-side view of the shaft frame structure and shaft column connection of this utility model.

[0036] Reference numerals: 1. Rectangular tube connecting nut head; 2. Rectangular tube connecting countersunk head; 3. Socket head bolt; 4. Top surface of nut head groove corner; 5. Side surface of nut head groove corner; 6. Side surface of countersunk head groove corner; 7. Countersunk head groove corner; 8. Blind hole; 9. Cross line; 10. Shaft frame connection; 12. Shaft frame body; 13. Rectangular front crossbeam of shaft frame; 14. Reinforcing crossarm; 15. Reinforcing connection; 16. Crossarm connection; 17. Right rectangular column tube of shaft frame; 18. Left rectangular column tube of shaft frame; 19. Rectangular rear crossbeam of shaft frame; 20. First shaft column; 21. Second shaft column; 22. Third shaft column; 23. Shaft beam; 24. Door; 25. Nut head welding surface; 26. Countersunk head welding surface; 27. Connector; 28. First shaft beam; 29. ​​Second shaft beam; 30. Detailed Implementation

[0037] The present invention will now be further described with reference to the accompanying drawings.

[0038] Example 1, referring to the accompanying drawings, in this utility model, a rectangular tube connecting nut head 1 is fixed to the column tube of the hoistway frame, and a rectangular tube connecting countersunk head 2 is fixed to the crossbeam. During on-site installation, the rectangular tube connecting countersunk head and the rectangular tube connecting nut head are connected and secured to the hoistway frame using hexagonal socket head cap screws. On-site installation of the hoistway frame eliminates the troublesome traditional welding, cutting, grinding, and painting processes, achieving simple and quick assembly of parts. The rectangular tube connecting nut head 1 is made into an L-shaped planar opening and closing block with the top surface 4 of the nut head groove corner perpendicular to the side surface 5 of the nut head groove corner. The rectangular tube connecting countersunk head 2 is made into an L-shaped planar opening and closing block with the top surface 7 of the countersunk head groove corner perpendicular to the side surface 6 of the countersunk head groove corner. The top surface 4 of the nut head groove corner of the rectangular tube connecting nut head 1 has one or more blind holes, and the top surface 7 of the countersunk head groove corner of the rectangular tube connecting countersunk head 2 has one or more countersunk holes 8. The rectangular tube connecting nut head 1 is snapped into the rectangular tube connecting countersunk head 2. The top surface 4 of the nut head groove corner aligns with the top surface 7 of the countersunk head groove corner, and the side surface 5 of the nut head groove corner aligns with the side surface 6 of the countersunk head groove corner. After the countersunk hole 8 corresponds to the blind hole 9, the connector 28 is formed by connecting the countersunk hole 8 and the blind hole 9 with hex bolts 3. The rectangular tube connecting nut head 1 and the rectangular tube connecting countersunk head 2 of the connector 28 are respectively fixed to the column beam of the shaft frame 13. Then, the rectangular tube connecting nut head 1 and the rectangular tube connecting countersunk head 2 are fixed together with hex bolts 3. The nut head welding surface 26 of the rectangular tube connecting nut head 1 is welded to the inner side of the top of the third shaft column 23, the top of the first shaft column 21, the top of the second shaft column 22, and the inner side of the bottom of the first shaft column 21. It is also welded to the upper and lower ends of the right rectangular column tube 18 and the left rectangular column tube 19 of the shaft frame 13. The countersunk head welding surface 27 of the rectangular tube connecting countersunk head 2 is welded to the bottom of the second shaft column 22, the bottom of the third shaft column 23, the outer end of the shaft beam 24, the outer end of the rectangular front crossbeam 14 of the shaft frame, the outer end of the reinforcing crossbeam 15, the outer end of the rectangular rear crossbeam 20 of the shaft frame, and the outer end of the crossbeam connection 17. The first shaft beam 29 and the second shaft beam 30 are connected to the rectangular tube connecting countersunk head 2, which is used to fasten the first shaft column 21, the second shaft column 22, the third shaft column 23, the right rectangular column tube 18 of the shaft frame, and the left rectangular column tube 19 of the shaft frame. The rectangular tube connecting countersunk head 2 at the bottom of the third shaft column 23 is connected to the rectangular tube connecting nut head 1 of the second shaft column 22. The rectangular tube connecting nut head 1 on the inner side of the top of the third shaft column 23 is connected to the rectangular tube connecting countersunk head 2 at the outer end of the shaft beam 24. Then, hexagonal bolts 3 are inserted into the countersunk hole 8 and the blind hole 9 to secure them.A hoist frame 13, consisting of the top of the first hoist column 21, the second hoist column 22, and the third hoist column 23, is installed in the hoistway. The rectangular tube connecting nuts 1 at the upper and lower ends of the right rectangular column tube 18 and the left rectangular column tube 19 of the hoist frame are respectively snapped into the rectangular front crossbeam 14, the rectangular rear crossbeam 20, the reinforcing crossbeam 15, the crossbeam connector 17, the door 25, the outer ends of the first hoist beam 29 and the second hoist beam 30, and the rectangular tube connecting countersunk heads 2 at the outer ends of the first hoist beam 29 and the second hoist beam 30 are connected and secured with hexagonal socket head bolts 3. The hoist frame 13 is installed in the hoistway, and the side panels, wall panels, electrical circuit boards, doors, decorative panels, motors, and hydraulic components are added to the sides, rear, top, and bottom of the hoist frame 13 to form an elevator.

[0039] During installation, the countersunk head welding surface 27 of the rectangular tube connecting countersunk head 2 is welded to both ends of the shaft beam 24 and the bottom ends of the second shaft column 22 and the third shaft column 23. The nut head welding surface 26 of the rectangular tube connecting nut head 1 is welded to the inner side of the bottom end of the first shaft column 21, the top end of the first shaft column 21, the top end of the second shaft column 22, and the inner and outer sides of the top end of the third shaft column 23. The countersunk hole 8 is connected to the blind hole 9 by the internal hex bolt 3. During installation, the blind hole 9, the countersunk hole 8, and the hex bolt 3 all face the inner cavity of the shaft frame, which is a person or material cavity. The ends of the rectangular tube connecting nut head 1, the rectangular tube connecting countersunk head 2, and the hex bolt 3 all correspond to the front of the shaft frame, with the back facing the wall. The top surface 4 of the nut head groove of the rectangular tube connecting nut head 1 aligns with the top surface 7 of the countersunk head groove, and the side surface 5 of the nut head groove aligns with the side surface 6 of the countersunk head groove. The right rectangular column tube 18 and the left rectangular column tube 19 of the hoistway frame are installed at the four corners inside the hoistway. The rectangular tubes of the rectangular front crossbeam 14, the reinforcing crossbeam 15, the rectangular rear crossbeam 20, and the hoistway beam 24 are connected to the countersunk head 2, corresponding to the rectangular tubes of the right rectangular column tube 18 and the left rectangular column tube 19 of the hoistway frame, and then secured with hexagonal socket head caps 3 to form the hoistway frame body 13, which is installed inside the hoistway. The hoistway frame body 13, with the addition of decorative panels, wall panels, electrical components, hydraulic components, door panels, door locks, and electrical panels, becomes an elevator.

Claims

1. A rectangular tube connection device for a steel structure shaft frame, comprising a rectangular tube connection nut head, a rectangular tube connection countersunk head, an internal hex bolt, a top surface of the nut head groove, a side surface of the nut head groove, a side surface of the countersunk head groove, a top surface of the countersunk head groove, a countersunk hole, a blind hole, a junction line, a shaft frame connection, a shaft frame body, a rectangular front crossbeam of the shaft frame, a reinforcing crossarm, a reinforcing connection, a crossarm connection, a right rectangular column tube of the shaft frame, a left rectangular column tube of the shaft frame, a rectangular rear crossbeam of the shaft frame, a first shaft column, a second shaft column, a third shaft column, a shaft beam, a door, a nut head welding surface, a countersunk head welding surface, a connector, a first shaft beam, and a second shaft beam, characterized in that... The rectangular tube connecting nut head (1) and the rectangular tube connecting countersunk head (2) are connected by internal hex bolts (3) to form a connector (28). The connector (28) is installed on the hoistway frame (13). The right rectangular column tube (18), the left rectangular column tube (19), the front rectangular crossbeam (14), the rear rectangular crossbeam (20), the reinforcing crossbeam (15), the first hoistway beam (29), and the second hoistway beam (30) are connected to form the elevator hoistway frame (13). The first hoistway beam (29) and the second hoistway beam (30) are installed between the right rectangular column tube (18) and the left rectangular column tube (19) of the hoistway frame. The rear crossbeam (20) of the hoistway frame is installed between the right rectangular column tube (18) and the left rectangular column tube (19) of the hoistway beam, and is installed at equal height. The rectangular front crossbeam (14) of the hoistway frame is installed between the right rectangular column tube (18) and the left rectangular column tube (19) of the hoistway frame above and below the door (25), and is connected to the nut head (1) and the countersunk head (2) of the rectangular tube by hex bolts (3). The reinforcing crossbeam (15), the rectangular front crossbeam (14) of the hoistway frame, and the rectangular rear crossbeam (20) of the hoistway frame are installed between the first hoistway beam (29) and the second hoistway beam (30), and are also connected to the nut head (1) and the countersunk head (2) of the rectangular tube by the rectangular tube. Secured with an internal hex bolt (3), the rectangular tube connecting nut head (1) has a nut head groove corner top surface (4) and a nut head groove corner side surface (5), which are perpendicular to each other and form an L shape. The rectangular tube connecting countersunk head (2) has a countersunk head groove corner side surface (6) and a countersunk head groove corner top surface (7), which are perpendicular to each other and form an L shape. The rectangular tube connecting countersunk head (2) has a countersunk hole (8), and the rectangular tube connecting nut head (1) has a blind hole (9). The internal threads of the countersunk hole (8) and the blind hole (9) are engaged with the external threads of the internal hex bolt (3), and the nut head groove corner top surface (4) is mated. The top surface (7) of the countersunk head groove corner and the side surface (5) of the nut head groove corner are aligned with the side surface (6) of the countersunk head groove corner. The internal hex bolt (3) extends from the countersunk hole (8) to the blind hole (9) and is tightened by thread engagement. The front of the door (25) of the shaft frame (13) is an empty frame. The right rectangular column tube (18) and the left rectangular column tube (19) of the shaft frame are on both sides and the back of the door (25). The left rectangular column tube (19) and the right rectangular column tube (18) of the shaft frame are equidistantly positioned above and below each other, with the first shaft beam (29) and the second shaft beam (3) equidistantly positioned below each other. 0), The right rectangular column tube (18) and the left rectangular column tube (19) of the hoistway frame behind the door (25) are equidistantly spaced by a rectangular rear crossbeam (20) of the hoistway frame. The welding surface (26) of the nut head (1) of the rectangular tube is welded to the inner side of the top of the third hoistway column (23), the top of the first hoistway column (21), the top of the second hoistway column (22), and the inner side of the bottom of the first hoistway column (21). It is also welded to the upper and lower ends of the right rectangular column tube (18) and the left rectangular column tube (19) of the hoistway frame body (13).The countersunk head welding surface (27) of the rectangular tube connecting countersunk head (2) is welded to the bottom end of the second shaft column (22), the bottom end of the third shaft column (23), the outer end of the shaft beam (24), the outer end of the rectangular front crossbeam (14) of the shaft frame, the outer end of the reinforcing crossbeam (15), the outer end of the rectangular rear crossbeam (20) of the shaft frame, the outer end of the crossbeam connection (17), the outer end of the first shaft beam (29), and the outer end of the second shaft beam (30), while the first shaft column (2) is snapped into place by the rectangular tube connecting countersunk head (2). 21) The rectangular tube connecting nut head (1) of the second shaft column (22), the third shaft column (23), the right rectangular column tube (18) of the shaft frame, and the left rectangular column tube (19) of the shaft frame; the rectangular tube connecting countersunk head (2) at the bottom of the third shaft column (23) is snapped into the rectangular tube connecting nut head (1) of the second shaft column (22); the rectangular tube connecting nut head (1) on the inner side of the top of the third shaft column (23) is snapped into the rectangular tube connecting countersunk head (2) at the outer end of the shaft beam (24). Then, use hex bolts (3) to insert into the countersunk hole (8) and blind hole (9) to tighten them; the shaft frame (13), which is formed by the top of the first shaft column (21), the second shaft column (22), and the third shaft column (23) stacked and connected, is installed in the shaft. The rectangular tubes connecting the upper and lower ends of the right rectangular column tube (18) and the left rectangular column tube (19) of the shaft frame are respectively connected to the rectangular front crossbeam (14) and the rectangular rear crossbeam (20) of the shaft frame by the rectangular tube connecting nut head (1). The rectangular tubes at the outer ends of the reinforcing crossarm (15), crossarm connector (17), door (25), first shaft beam (29), and second shaft beam (30), and the countersunk heads (2) of the first shaft beam (29) and second shaft beam (30) are connected and secured with hexagonal bolts (3). The shaft frame (13) is installed in the shaft, and side panels, wall panels, electrical circuit boards, doors, decorative panels, motors, and hydraulic components are added to the sides, rear, top, and bottom of the shaft frame (13).

2. The rectangular tube connecting device for a steel structure shaft frame according to claim 1, characterized in that... The rectangular tube connecting countersunk head (2) welded to the ends of the first shaft beam (29), the second shaft beam (30), the rectangular front crossbeam (14) of the shaft frame, the rectangular rear crossbeam (20) of the shaft frame, and the reinforcing crossbeam (15) are connected and tightened by internal hex bolts (3) through the internal threads of the countersunk hole (8) and the blind hole (9).

3. The rectangular tube connecting device for a steel structure shaft frame according to claim 1, characterized in that... The rectangular tube connecting nut head (1) and the rectangular tube connecting countersunk head (2) have smooth and burr-free edges.

4. The rectangular tube connecting device for a shaft frame according to claim 1, characterized in that... The countersunk hole (8) and blind hole (9) are engaged with the external thread of the internal hexagonal bolt (3). There is one or more countersunk holes (8) and blind holes (9), and there is one or more internal hexagonal bolts (3).

5. The rectangular tube connecting device for a steel structure shaft frame according to claim 1, characterized in that... The hoistway beam (24) includes a first hoistway beam (29), a second hoistway beam (30), a rectangular front crossbeam of the hoistway frame (14), a rectangular rear crossbeam of the hoistway frame (20), and a reinforcing crossbeam (15).

6. The rectangular tube connecting device for a steel structure shaft frame according to claim 1, characterized in that... The nut head welding surface (26) of the rectangular tube connecting nut head (1) is welded to both sides and the rear end of the door (25) and the right rectangular column tube (18) of the hoist frame and the left rectangular column tube (19) of the hoist frame. The countersunk head welding surface (27) is welded to the front crossbeam (14) of the hoist frame, the rear crossbeam (20) of the hoist frame, the hoist beam (24), the first hoist column (21), the second hoist column (22), and the third hoist column (23). The countersunk hole (8) and blind hole (9) of the rectangular tube connecting nut head (1) face the inner cavity of the door (25).

7. The rectangular tube connecting device for a steel structure shaft frame according to claim 1, characterized in that... The vertical height of the shaft frame (13) is formed by splicing together multiple first shaft columns (21), second shaft columns (22), and third shaft columns (23).

8. The rectangular tube connecting device for a steel structure shaft frame according to claim 1, characterized in that... The hoistway frame (13) is installed in the hoistway. The hoistway frame (13) is equipped with car panels, wall panels, circuit and electrical boards, decorative panels, motors and hydraulic components on the sides, back, top and bottom to form an elevator. The hoistway frame (13) has four vertically distributed columns (18) on the right and (19) on the left and right sides of the hoistway frame (13). The first hoistway beam (29), the second hoistway beam (30), the front crossbeam (14) of the hoistway frame, the rear crossbeam (20) of the hoistway frame and the reinforcing crossbeam (15) are fixed at both ends by rectangular tube connecting nut heads (1) and rectangular tube connecting countersunk head (2) with hexagonal bolts (3). The rectangular tube connecting nut heads (1), rectangular tube connecting countersunk head (2), hexagonal bolts (3) and hoistway frame (13) are assembled and installed on site.

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