Electric and manual switchable double rocker arm slewing support mechanism

Abstract

Provided is an electric and manual switchable double rocker arm slewing support mechanism, comprising a slewing hinged connection box, an articulated connection seat, a gear transmission assembly, a support wire seat assembly, and a pulley assembly. The articulated connection seat is articulated to the rocker arm; a tail rope hanging point is provided at the end of the rocker arm; the tail rope hanging point is used for manual rotation of the slewing support mechanism; the gear transmission assembly comprises a driving gear, a transition gear, and a slewing support ring gear that are meshed in sequence; the power output shaft of the reduction motor drives the driving gear to rotate; the slewing support ring gear is tightly connected to the slewing hinged connection box, and the slewing support ring gear is rotatably supported and installed at the center of the upper end face of the support wire seat assembly via a second bearing. The present invention adopts a new gear transmission assembly. When the reduction motor fails, the reduction motor can be removed, and the tail rope can be hung using the tail rope hanging point provided at the end of the rocker arm. The tail rope can be dragged on the ground to manually rotate the arm, thereby avoiding the phenomenon that the rocker arm cannot be properly constructed due to various reasons and the construction period is delayed.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission line construction of power transmission and transformation projects of electric power systems, and particularly relates to a double-rocker arm holding rod slewing support mechanism that is switchable between electric and manual operation. Background Art

[0002] The double rocker arm is used to lift tower materials and assemble iron towers. The double rocker arm consists of a bottom support arm, a double rocker arm slewing support mechanism installed on the top of the support arm, a mast on the top of the double rocker arm slewing support mechanism, and a double rocker arm hinged to the double rocker arm slewing support mechanism. Among them, the double rocker arm slewing support mechanism is a key component for the rotation of the double rocker arm and the adjustment of the double rocker arm pitch angle. The double rocker arm slewing support mechanism under the existing technology is simply driven by a reduction motor. During use, due to various reasons on site, such as when the reduction motor fails to operate normally, or there is no electricity on site, the arm cannot work normally. In order not to delay the construction period, the following improved technical solution is proposed. Summary of the Invention

[0003] The technical problem solved by the present invention is: to provide an electric and manual switchable double rocker arm holding rod rotation support mechanism, which adopts a new type of gear transmission component. When the reduction motor fails, the reduction motor can be removed, and the tail rope hanging point provided at the end of the rocker arm can be used to hang the tail rope, and the tail rope can be dragged on the ground to manually rotate the holding rod, thereby avoiding the occurrence of delays in the construction period caused by the rocker arm holding rod not being able to operate normally due to various reasons.

[0004] The technical solution adopted by the present invention is: an electric and manual switchable double rocker arm slewing support mechanism, which has a slewing hinge connection box body, an articulated connection seat is installed on the outside of the slewing hinge connection box body, and a gear transmission assembly is provided at the bottom of the slewing hinge connection box body, which drives the slewing hinge connection box body to rotate through the gear transmission assembly, and a support wire seat assembly is provided at the bottom of the gear transmission assembly, which is installed on the top of the support frame assembly, and the support frame assembly is installed with a lead-out pulley assembly, and the articulated connection seat body is used for articulating the rocker arm; the rocker arm end is provided with a tail rope hanging point; the gear transmission assembly includes a driving gear, a transition gear, and a slewing support gear ring that are meshed in sequence; the driving gear is coaxially fixedly installed on the end of the power output shaft of the vertically upward reduction motor; the reduction motor and the reduction motor The machine mounting plate is fixedly connected as a whole; the reduction motor mounting plate is detachably connected to the support wire seat assembly; when the reduction motor mounting plate is removed from the support wire seat assembly, the reduction motor and the driving gear fixedly installed on the reduction motor mounting plate are removed together; the transition gear is installed for horizontal rotation support on the outer side of the upper end face of the support wire seat assembly through the first bearing and the first support shaft; the transition gear engages with the slewing support ring; the upper end face of the slewing support ring is coaxially fastened to the center of the bottom end of the slewing hinge connection box, and the slewing support ring is installed for rotation support at the center of the upper end face of the support wire seat assembly through the second bearing; the transition gear drives the slewing support ring to rotate; the slewing support ring drives the slewing hinge connection box to rotate.

[0005] In the above technical solution, further: the swivel articulated connection box is a hollow frame type welded support structure; the upper end surface of the swivel articulated connection box is provided with a vertically arranged connecting ear plate; the connecting ear plate is used to fix the bottom end of the mast; the symmetrical vertical side surfaces of the swivel articulated connection box are provided with a vertical mounting structure; the vertical mounting structure is an angle steel and a steel plate; the vertical side surfaces of the vertical mounting structure are fastened and detachably supported to install the articulated connection seat body; the articulated connection seat body has two; the two articulated connection seat bodies are symmetrically installed with the swivel articulated connection box as the axis of symmetry; the articulated connection seat body is used to articulate the rocker arm.

[0006] In the above technical solution, further: the articulated connection seat is composed of a vertical seat plate, a hinge plate, and reinforcement ribs; the vertical seat plate is a hollow vertical mounting plate; the vertical mounting plate is fastened and detachably connected to the vertical side of the rotary hinge connection box; wherein the hinge plate is horizontally arranged on the outside of the vertical seat plate, and the hinge plate is a double-ear plate hinged support structure, and reinforcement ribs are provided between each hinge plate and the vertical seat plate.

[0007] In the above technical solution, further: the bottom of the support wire pull seat assembly is fastened and detachably connected to the top of the support frame assembly; the support wire pull seat assembly includes upper and lower horizontal support wire pull seat bodies that are parallel to each other; the outer side of the upper horizontal support wire pull seat body is provided with a convex horizontal arc plate; the upper end surface of the horizontal arc plate is horizontally rotated and supported on the outer side of the upper end surface of the support wire pull seat assembly through a first bearing and a first support shaft to support the installation of a transition gear; the four corners of the upper and lower horizontal support wire pull seat bodies that are parallel to each other are respectively provided with fixed wire pull plates; the fixed wire pull plates are symmetrically distributed in the center; a number of vertical support ribs are provided on the inner side between the upper and lower horizontal support wire pull seat bodies that are parallel to each other and are evenly distributed radially from the center to the surrounding areas; a reduction motor mounting plate is fastened and plugged into one side of the horizontal support wire pull seat body; the reduction motor mounting plate is vertically arranged; the reduction motor mounting plate is used to install the reduction motor.

[0008] The advantages of the present invention compared with the prior art are:

[0009] 1. When the reduction motor fails to operate normally or there is no electricity on site, in order to avoid the boom from failing to operate normally and delaying the construction period, the reduction motor mounting plate and the reduction motor thereon can be removed, and at the same time, the driving gear fixedly mounted on the output shaft of the reduction motor can be removed together; since the end of the rocker arm is provided with a tail rope hanging point, a tail rope is hung on the tail rope hanging point, and the ground personnel manually drive the rocker arm hinged to the slewing hinge connection box to continue to rotate by pulling the tail rope. The manual rotation on the ground avoids the occurrence of the phenomenon that the rocker arm boom cannot be normally constructed due to various reasons and delays the construction period, so that the boom hoisting tower materials to assemble the iron tower in the field, while repairing the reduction motor and solving other faults, does not affect the construction progress, thereby ensuring the smooth completion of the construction.

[0010] 2. The electric and manual switchable double rocker arm slewing support mechanism of the present invention can be disassembled into multiple parts. After the multiple parts are disassembled, the weight of each component does not exceed 400kg, which is convenient for transportation and use in mountainous areas.

[0011] 3. The slewing hinge connection box and the hinge connection seat in the slewing support hinge device of the present invention are split structures. When the holding pole is retracted, the rocker arm and the hinge seat can be separated at the main cross-section of the holding pole, so that the holding pole can smoothly pass through the smaller flat opening of the iron tower; this solves the problem in the past where the holding pole could not be removed because the flat opening of the iron tower was smaller than the two hinged dimensions of the holding pole.

[0012] 4. Each split structure of the present invention adopts a steel hollow design combined with a reinforcing rib design, which has a simple structure, readily available materials, and easy production. It meets the structural support strength requirements while being lightweight. Each split component is quickly split or combined through high-strength fasteners, ensuring the structural support strength while meeting the lightweight transportation requirements; it is convenient for construction, use, production and transportation turnover. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of the gear transmission assembly of the present invention;

[0014] Figure 2 for Figure 1 A perspective view of the exploded state of the central rotary hinged connection box and the hinged connection base;

[0015] Figure 3 for Figure 1 A perspective view of the middle support cable holder assembly;

[0016] Figure 4 for Figure 3 A top view of

[0017] Figure 5 for Figure 1 A three-dimensional view of the slewing bearing ring gear;

[0018] Figure 6 for Figure 1 Schematic diagram of the enlarged details of the installation of the reduction motor and gear transmission assembly after the reduction motor is installed;

[0019] In the figure: 1-rotating hinged connection box, 2-hinged connection seat, 3-tooth transmission assembly, 4-support wire pulling seat assembly, 5-support frame assembly, 6-lead-out pulley assembly; 101-connecting ear plate, 102-vertical mounting structure; 201-vertical seat plate, 202-hinge plate, 203-reinforcement rib; 300-driving gear, 301-transition gear, 302-slewing support gear ring, 303-first bearing, 304-first support shaft, 3021-second bearing, 305-reduction motor, 306-reduction motor mounting plate; 401-horizontal support wire pulling seat body, 4011-horizontal arc plate, 402-fixed wire pulling plate, 403-vertical support rib plate. DETAILED DESCRIPTION

[0020] The following is a combination of the embodiments of the present invention Figure 1-6 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] (like Figure 1The double-rocker boom slewing support mechanism (shown in the figure) features an electrically and manually switchable, dual-rocker boom. It features a slewing hinged housing 1, with an articulated connection seat 2 positioned outside the housing. The seat is removably and securely connected to the housing. The split slewing hinged housing 1 and seat 2 effectively resolve the previous issue of boom jamming and difficulty in removal. When the boom is retracted, the rocker arm and the articulated seat can be separated at the main cross-section of the boom, allowing the boom to pass smoothly through the smaller opening of the tower. This eliminates the previous problem of mast removal being impossible due to the tower opening being smaller than the dimensions of the boom's two articulated joints.

[0022] (like Figure 2 As shown) in the above embodiment, further: the slewing hinge connection box body 1 is a hollow frame type welded support structure; it is made of profiles such as angle steel, steel plate, etc. welded together, the material is easy to obtain, and the hollow structure realizes a lightweight design. The four corners of the upper end face of the slewing hinge connection box body 1 are provided with vertically arranged connecting ear plates 101; the connecting ear plates 101 are used to fix the bottom end of the mast using a pin shaft. The center of the slewing hinge connection box body 1 is provided with four sets of guide pulleys (combined with Figure 6 The four sets of guide pulleys are used for steering the lifting rope and the heaving rope on the rotary hinged connection box 1. The symmetrical vertical side surfaces of the rotary hinged connection box 1 are provided with a vertical mounting structure 102 (combined with Figure 2 ); The vertical mounting structure 102 is an angle steel and a steel plate; the angle steel is set at the four corners, and the steel plate complements the angle steel, and each side forms four vertical support structures to improve the stability of the installation of the articulated connection seat 2. The vertical side of the vertical mounting structure 102 is fastened and detachably supported to install the articulated connection seat 2 body, so as to realize the disassembly and combination of the articulated connection seat 2 and the rotary articulated connection box 1, and solve the problem that the holding pole is stuck and cannot be disassembled. The articulated connection seat 2 body has two; the two articulated connection seat 2 bodies are symmetrically installed with the rotary articulated connection box 1 as the symmetry axis, forming a slewing structure that can be transported and disassembled separately. The articulated connection seat 2 body is used for articulating the rocker arm; the end of the rocker arm is provided with a tail rope hanging point. After the tail rope hanging point is hung with the tail rope, the rocker arm can drag the tail rope after the reduction motor fault is removed, and the tail rope drags the rocker arm so that the rocker arm can continue to rotate.

[0023] (like Figure 2(As shown) In the above embodiment, further: the articulated connection seat 2 is composed of a vertical seat plate 201, a hinge plate 202, and a reinforcing rib 203; the vertical seat plate 201 is a hollow vertical mounting plate; the back of each mounting surface vertical mounting plate 201 is respectively provided with four groups of vertical mounting structures, and the four groups of vertical mounting structures are used to fasten and detachably connect the vertical side of the rotary hinge connection box body 1: that is, the vertical mounting plate 201 and the vertical side of the rotary hinge connection box body 1 are fastened and detachably connected as a whole. The hinge plate 202 is horizontally arranged on the outside of the vertical seat plate 201, and is used for the articulation of the horizontal axisymmetric double rocker arm. The hinge plate 202 is a double-ear plate hinge support structure, and the structural support is more stable. A reinforcing rib 203 is provided between each hinge plate 202 and the vertical seat plate 201 to increase the structural support stability and support strength of the articulated support.

[0024] On this basis: (combined with Figure 6 ) A gear transmission assembly 3 is provided at the bottom of the rotary hinged connection box body 1; a support wire seat assembly 4 is provided at the bottom of the gear transmission assembly 3; the support wire seat assembly 4 supports the installation of the gear transmission assembly 3. The gear transmission assembly 3 includes a driving gear 300, a transition gear 301, and a rotary support gear ring 302 that are meshed in sequence. The driving gear 300 is coaxially fixedly mounted on the end of the power output shaft of the vertically upward reduction motor 305; the reduction motor 305 and the reduction motor mounting plate 306 are fastened and connected as a whole using fasteners; the reduction motor mounting plate 306 is vertically arranged, and the reduction motor mounting plate 306 is plugged into the vertical side of the support wire seat assembly 4 and fastened and detachably connected with fasteners. When the reduction motor fails, the reduction motor mounting plate 306 is removed from the support wire seat assembly 4. When the reduction motor mounting plate 306 is removed, the reduction motor 305 fixed on the reduction motor mounting plate 306 and the driving gear 300 are also removed. The end of the rocker arm is provided with a tail rope hanging point. After the tail rope is hung at the tail rope hanging point, the tail rope is dragged, and the tail rope then pulls and drags the rocker arm so that the rocker arm can continue to rotate and be used without delaying the construction period. On this basis, the driving gear 300 is engaged with the transition gear 301, and the transition gear 301 is rotatably supported and installed on the outer side of the upper end face of the support wire seat assembly 4 through the first bearing 303 and the first support shaft 304. Specifically: the inner side of the transition gear 301 is coaxially interference fit and fixedly connected to the outer ring of the bearing of the first bearing 303; the inner ring of the bearing of the first bearing 303 is coaxially tight fit and fixedly connected to the upper end of the shaft body of the first support shaft 304; the lower end of the shaft body of the first support shaft 304 is vertically welded and fixedly connected to the outer side of the upper end face of the support wire seat assembly 4. The transition gear 301 is enabled to rotate outside the upper end surface of the supporting wire drawing seat assembly 4.

[0025] On this basis: the transition gear 301 engages with the slewing support gear ring 302 (see Figure 1 Combine Figure 5); The diameter of the transition gear 301 is smaller than that of the slewing support gear ring 302, which plays the role of speed reduction transmission. The upper end face of the slewing support gear ring 302 is coaxially and tightly connected to the center of the bottom end of the slewing hinge connection box body 1, so that the slewing support gear ring 302 drives the slewing hinge connection box body 1 to rotate at a reduced speed. Among them, the slewing support gear ring 302 is rotatably supported and installed at the center of the upper end face of the support wire seat assembly 4 through the second bearing 3021 (combined with Figure 6 Specifically: the inner side of the slewing support gear ring 302 is coaxially interference fit-fixed with the outer ring of the second bearing 3021; the inner ring of the second bearing 3021 is fastened and fixedly connected to the center of the upper end face of the support wire seat assembly 4 (see Figure 6 ).

[0026] (Combined Figure 1 (as shown) on this basis: the bottom of the support wire seat assembly 4 is fastened and detachably connected to the top of the support frame assembly 5. The bottom of the support wire seat assembly 4 can be disassembled from the top of the support frame assembly 5. Similarly, the support frame assembly 5 can be detachably installed to lead out the pulley assembly 6. The electric and manual switchable double rocker arm holding rod slewing support mechanism of the present invention can be disassembled into multiple parts. After the multiple parts are disassembled, the weight of each component does not exceed 400kg, which is convenient for transportation, turnover and use in mountainous areas.

[0027] (like Figure 3 、 Figure 4(As shown in the above embodiment, further: the support wire seat assembly 4 includes upper and lower horizontal support wire seat bodies 401 spaced parallel to each other, wherein the upper horizontal support wire seat body 401 mainly serves the function of supporting the rotational installation of the gear transmission assembly 3, and the specific method is combined with the description of the rotary support gear ring 303 in the previous text. The outer side of the upper horizontal support wire seat body 401 is formed with a convex horizontal arc plate 4011; the upper end surface of the horizontal arc plate 4011 is horizontally rotatably supported and installed on the outer side of the upper end surface of the support wire seat assembly 4 through the first bearing 303 and the first support shaft 304. The four corners of the bottom end surface of the lower horizontal support wire seat body 401 are used for fastening and detachably connecting the four corners of the top of the support frame assembly 5. Fixed wire plates 402 are respectively provided at the four corners between the upper and lower horizontal support wire seat bodies 401 spaced parallel to each other; the fixed wire plates 402 are used to fix the internal wires of the entire holding pole. The four fixed wire plates 402 are distributed symmetrically around the center to ensure uniform force. A plurality of vertical support ribs 403 are provided vertically inside the upper and lower parallel horizontal support cable holder bodies 401, evenly distributed radially from the center. These ribs serve to enhance the structural support strength of the upper and lower parallel horizontal support cable holder bodies 401. A reduction motor mounting plate 306 is fixedly mounted on one side of the horizontal support cable holder body 401. The reduction motor mounting plate 306 is vertically mounted outside the support cable holder assembly 4 and is used to mount the reduction motor 305.

[0028] As can be seen, the present invention's swivel hinged connection box 1, hinged connection base, and support cable holder assembly 4 each utilize a hollowed-out steel design combined with reinforcing ribs. This results in a simple structure, readily available materials, and easy fabrication. While lightweight, it also meets the required structural support strength. High-strength fasteners allow for quick disassembly and assembly between the components, ensuring structural support strength while meeting lightweight handling requirements. This facilitates construction, use, fabrication, and handling.

[0029] The working principle of the present invention is: when the mechanism is normal, the reduction motor 305 drives the driving gear 300 to rotate, the driving gear 300 engages to drive the transition gear 301 to rotate, the transition gear 301 engages to drive the slewing support ring gear 302 to rotate, the slewing support ring gear 302 drives the slewing hinge connection box body 1 to rotate, and the slewing hinge connection box body 1 then drives the double rocker arm hinged to the hinge connection seat 2 to rotate. This mode is the automatic rotation usage mode of the mechanism of the present invention driven by the reduction motor 305. However, when the reduction motor 305 cannot operate normally, or there is no electricity on site, in order to avoid the boom not being able to work normally and not delaying the construction period, the reduction motor mounting plate 306 and the reduction motor 305 thereon can be removed, and at the same time, the driving gear 300 on which the power output shaft of the reduction motor 305 is fixedly installed can be removed together; since a tail rope hanging point is reserved at the end of the rocker arm, a tail rope is hung on the tail rope hanging point, and the ground personnel manually drag the rocker arm articulated by the articulated connecting seat 2 by pulling the tail rope to continue to realize the rotation function. The artificial rotation on the ground is used to avoid the occurrence of the phenomenon that the rocker arm boom cannot be constructed normally due to various reasons and the construction period is delayed, so that the boom hoisting tower materials to assemble the iron tower in the field, while repairing the reduction motor and solving other faults, does not affect the construction progress, thereby ensuring the smooth completion of the construction.

[0030] Each embodiment in this specification is described in a related manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. An electric and manual switchable double rocker arm slewing support mechanism, comprising a slewing hinged connection box (1), an articulated connection seat (2) being installed on the outer side of the slewing hinged connection box (1), a gear transmission assembly (3) being provided at the bottom of the slewing hinged connection box (1), the slewing hinged connection box (1) being driven to rotate by the gear transmission assembly (3), a support wire seat assembly (4) being provided at the bottom of the gear transmission assembly (3), the support wire seat assembly (4) being installed at the top of a support frame assembly (5), the support frame assembly (5) being installed with a lead-out pulley assembly (6), characterized in that: The articulated connection seat (2) is used to articulate the rocker arm; the end of the rocker arm is provided with a tail rope hanging point; the gear transmission assembly (3) includes a driving gear (300), a transition gear (301), and a slewing bearing gear ring (302) that are meshed in sequence; the driving gear (300) is coaxially fixedly mounted on the end of the power output shaft of the vertically upward reduction motor (305); the reduction motor (305) and the reduction motor mounting plate (306) are fixedly connected as a whole; the reduction motor mounting plate (306) is detachably connected to the support wire seat assembly (4); when the reduction motor mounting plate (306) is removed from the support wire seat assembly (4), the reduction motor (305) fixedly mounted on the reduction motor mounting plate (306) and the driving gear are removed. The wheel (300) is removed together; the transition gear (301) is horizontally supported and rotated on the outer side of the upper end surface of the support wire seat assembly (4) through the first bearing (303) and the first support shaft (304); the transition gear (301) engages with the slewing support gear ring (302); the upper end surface of the slewing support gear ring (302) is coaxially and tightly connected to the bottom center of the slewing hinge connection box (1), and the slewing support gear ring (302) is slewing and supported on the center of the upper end surface of the support wire seat assembly (4) through the second bearing (3021); the transition gear (301) drives the slewing support gear ring (302) to rotate; the slewing support gear ring (302) drives the slewing hinge connection box (1) to rotate; The rotary hinge connection box (1) is a hollow frame type welded support structure; the upper end surface of the rotary hinge connection box (1) is provided with a vertically arranged connection ear plate (101); the connection ear plate (101) is used to fix the bottom end of the mast; the symmetrical vertical side surfaces of the rotary hinge connection box (1) are provided with a vertical mounting structure (102); The hinged connection seat (2) is composed of a vertical seat plate (201), a hinged plate (202), and a reinforcing rib (203); The bottom of the support wire seat assembly (4) is fastened and detachably connected to the top of the support frame assembly (5); the support wire seat assembly (4) comprises an upper and lower horizontal support wire seat body (401) spaced parallel to each other; wherein the outer side of the upper horizontal support wire seat body (401) is provided with a convex horizontal arc plate (4011); the upper end surface of the horizontal arc plate (4011) is supported and installed on the outer side of the upper end surface of the support wire seat assembly (4) through a first bearing (303) and a first support shaft (304); the upper and lower horizontal arc plates (4011) are spaced parallel to each other and are provided with a convex horizontal arc plate (4011); the upper end surface of the horizontal arc plate (4011) is supported and installed on the outer side of the upper end surface of the support wire seat assembly (4) through a first bearing (303) and a first support shaft (304); The four corners of the flat support wire drawing seat (401) are respectively provided with fixed wire drawing plates (402); the fixed wire drawing plates (402) are distributed symmetrically with respect to the center; a plurality of vertical support ribs (403) are provided on the inner side between the upper and lower parallel horizontal support wire drawing seats (401) and are evenly distributed radially from the center to the surrounding areas; a reduction motor mounting plate (306) is fixedly plugged and installed on one side of the horizontal support wire drawing seat (401); the reduction motor mounting plate (306) is vertically arranged; the reduction motor mounting plate (306) is used to mount the reduction motor (305).

2. The electric and manual switchable double rocker arm slewing support mechanism according to claim 1 is characterized in that: The vertical mounting structure (102) is made of angle steel and steel plate; the vertical side of the vertical mounting structure (102) is fastened and detachably supported to mount the hinged connection seat (2); the hinged connection seat (2) has two seats; the two hinged connection seats (2) are symmetrically mounted with the rotary hinged connection box (1) as the symmetry axis.

3. The electric and manual switchable double rocker arm slewing support mechanism according to claim 1 is characterized in that: The vertical seat plate (201) is a hollow vertical mounting plate; the vertical seat plate (201) is fastened and detachably connected to the vertical side of the rotary hinge connection box (1); wherein the hinge plate (202) is horizontally arranged outside the vertical seat plate (201), and the hinge plate (202) is a double-ear plate hinge support structure, and a reinforcing rib (203) is provided between each hinge plate (202) and the vertical seat plate (201).

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