Speed limiter tensioning device for elevator and elevator

Abstract

The invention relates to a speed governor tensioning device for an elevator and the elevator, the speed governor tensioning device for the elevator comprises a fixed frame and a tensioning heavy assembly, the fixed frame comprises an upper beam, two stand columns and a lower beam, and ratchet structures are arranged on the stand columns of the fixed frame; the tensioning weight assembly is installed on the fixed frame and connected with a speed limiter rope of the elevator, the tensioning weight assembly is configured to move in the vertical direction along a stand column of the fixed frame, the tensioning weight assembly comprises a restraining assembly, and the restraining assembly can be matched with the ratchet structure to limit vertical jumping of the tensioning weight assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and more particularly to a speed governor tensioning device for an elevator and an elevator equipped with the speed governor tensioning device. Background Art

[0002] The speed limiter tensioner of the elevator is an essential part of the elevator. The reliability of the speed limiter tensioner directly affects the performance and safety of the elevator. When the elevator is in emergency braking and the safety clamp is activated, the speed limiter tensioner will jump up and down. Especially for high-speed elevators, the jumping amplitude is larger and more obvious, which may affect the safety of the elevator.

[0003] The speed governor tensioning devices currently used in elevators, whether they are floor-mounted or rail-mounted, do not effectively solve the problem of the speed governor tensioning device bouncing up and down. Therefore, there is a need for further improvement of the existing speed governor tensioning devices.

[0004] The information disclosed in this background section is only intended to enhance understanding of the overall background of the invention and should not be taken as an acknowledgement or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a speed governor tensioning device for an elevator, which can effectively prevent the speed governor tensioning device from bouncing up and down and can achieve rapid resetting.

[0006] According to one aspect of the present invention, the present invention aims to provide a speed limiter tensioning device for an elevator, which may include: a fixed frame and a tensioning weight assembly, the fixed frame including an upper beam, two columns and a lower beam, and a ratchet structure is provided on the columns of the fixed frame; the tensioning weight assembly is installed to the fixed frame and connected to the speed limiter rope of the elevator, the tensioning weight assembly is configured to be able to move in a vertical direction along the columns of the fixed frame, and the tensioning weight assembly includes a constraint component, which can cooperate with the ratchet structure to limit the up and down jumping of the tensioning weight assembly.

[0007] The aforementioned speed limiter tensioning device for an elevator, wherein the fixed frame may further include: a guide rail and an adjustment assembly, wherein the guide rail is arranged on two columns of the fixed frame, and the tensioning weight assembly is located between the two guide rails and can move along the guide rails; the adjustment assembly is configured to separate the constraint assembly from the ratchet structure by a predetermined gap; wherein the ratchet structure is arranged in two, and the two ratchet structures are respectively arranged on two columns to face each other obliquely.

[0008] The aforementioned speed limiter tensioning device for an elevator, wherein the adjustment assembly may include: a fixed bracket, an adjustment bolt and an adjustment bracket, wherein the fixed bracket is mounted to a column of the fixed frame; the adjustment bolt is mounted to the fixed bracket, and when the adjustment bolt is rotated, the adjustment bolt can move in the vertical direction; the adjustment bracket is mounted to the tensioning weight assembly and can cooperate with the adjustment bolt.

[0009] The aforementioned speed limiter tensioning device for an elevator, wherein the tensioning weight assembly may further include: two vertical beams, a sheave assembly, a guide shoe and a plurality of tensioning blocks, the two vertical beams extending in the vertical direction and parallel to each other; the sheave assembly includes a tensioning wheel, the speed limiter rope of the elevator passes around the tensioning wheel, the sheave assembly is located between the upper ends of the two vertical beams, and the sheave assembly is connected to the inner surface of the vertical beam; the guide shoe is mounted to the outer surface of the vertical beam, and the guide shoe is configured to clamp the guide rail; a plurality of tensioning blocks are located between the lower parts of the two vertical beams, and the plurality of tensioning blocks are stacked on each other in the extension direction of the vertical beams; wherein the adjustment bracket is mounted to the outer surface of the upper end of the vertical beam.

[0010] The aforementioned speed limiter tensioning device for elevators, wherein the constraint components are provided in two, and the two constraint components are respectively mounted on the outer surfaces of the two vertical beams, and when the elevator emergency brake or the safety clamp is actuated, the constraint component engages with the ratchet structure to limit the movement of the tensioning weight assembly.

[0011] The aforementioned speed limiter tensioning device for an elevator, wherein each constraint assembly may include: a first mounting bracket, a second mounting bracket, a constraint pawl, a reset plate and an elastic element, wherein the first end of the first mounting bracket is mounted to the outer surface of the vertical beam, and the second end of the first mounting bracket protrudes from the outer surface of the vertical beam; the first end of the second mounting bracket is mounted to the outer surface of the vertical beam, and the second end of the second mounting bracket is inserted into the mounting hole of the first mounting bracket to form an accommodating space; the constraint pawl is arranged in the accommodating space and is configured to be rotatably mounted to the first mounting bracket and the second mounting bracket through a constraint pin, and the constraint pawl is configured to engage with the ratchet structure; the reset plate is connected to the first mounting bracket and the second mounting bracket, and the reset plate can move in the vertical direction to rotate the constraint pawl; the elastic element is configured to be able to reset the constraint pawl after rotation.

[0012] The aforementioned speed limiter tensioning device for an elevator, wherein the second mounting bracket is provided with a first protruding hole; the reset plate is provided with a second protruding hole; wherein, when the elevator operates normally, the first protruding hole corresponds to the second protruding hole, so that the restraining pawl partially protrudes from the first protruding hole and the second protruding hole.

[0013] The aforementioned speed limiter tensioning device for an elevator, wherein the second mounting bracket may include: a first plate and a second plate, the first end of the first plate being mounted to the outer surface of the vertical beam, the second end of the first plate being provided with a mounting protrusion, and the mounting protrusion being inserted into the mounting hole of the first mounting bracket; the second plate being connected to the first plate, and the first end of the second plate being mounted to the outer surface of the vertical beam.

[0014] The aforementioned speed limiter tensioning device for an elevator, wherein the reset plate is provided with a first sliding groove, and the second end of the second plate is inserted into the first sliding groove of the reset plate; the first mounting bracket is provided with a second sliding groove; the reset plate is provided with a sliding protrusion, and the sliding protrusion is inserted into the second sliding groove and can slide in the second sliding groove; wherein the first sliding groove and the second sliding groove extend in the vertical direction.

[0015] In the aforementioned speed limiter tensioning device for an elevator, the reset plate may be further provided with a positioning module, the first plate member is provided with a plurality of positioning holes, and the positioning module cooperates with the positioning holes to ensure the moving distance of the reset plate.

[0016] According to another aspect of the present invention, the present invention is intended to provide an elevator, comprising the aforementioned speed governor tensioning device for an elevator.

[0017] The beneficial effect of the present invention is that, through the engagement of the constraint assembly and the ratchet structure, the speed governor tensioning device for an elevator according to the present invention can prevent the tensioning weight assembly from bouncing up and down. In addition, by adjusting the bolt and the reset plate, the speed governor tensioning device for an elevator according to the present invention can achieve rapid reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective schematic diagram of a speed governor tensioning device for an elevator according to an exemplary embodiment of the present invention.

[0019] Figure 2 It is a perspective schematic diagram of a fixing frame of a speed governor tensioning device for an elevator according to an exemplary embodiment of the present invention.

[0020] Figure 3 It is a perspective schematic diagram of a tensioning assembly of a speed governor tensioning device for an elevator according to an exemplary embodiment of the present invention.

[0021] Figure 4 It is a perspective schematic diagram of a column of a fixing frame according to an exemplary embodiment of the present invention.

[0022] Figure 5 It is a perspective schematic diagram of a restraint component of a tensioner assembly according to an exemplary embodiment of the present invention.

[0023] Figure 6 Schematic diagram of an exploded view of a restraint component of a tensioner assembly according to an exemplary embodiment of the present invention.

[0024] Figure 7 It is a perspective schematic diagram of a positioning module of a restraint assembly according to an exemplary embodiment of the present invention.

[0025] Figure 8 is a cross-sectional view of a positioning module of a restraint assembly according to an exemplary embodiment of the present invention.

[0026] Fig. 9 Schematic diagram of a resetting process of a speed governor tensioning device for an elevator according to an exemplary embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1 Fixed frame

[0029] 11. Beam

[0030] 12 Column

[0031] 121 Ratchet structure

[0032] 122 Guide Rail

[0033] 1231 Fixed bracket

[0034] 1232 Adjusting bolt

[0035] 124 Safety switch

[0036] 13 Lower beam

[0037] 2 tensioner assembly

[0038] 21 Constraint Components

[0039] 211 First mounting bracket

[0040] 211a Part 1

[0041] 211a1 First connecting hole

[0042] 211b Part 2

[0043] 2111 Mounting holes

[0044] 2112 Second sliding slot

[0045] 2113 Pawl mounting hole

[0046] 212 Second mounting bracket

[0047] 2121 First Plate

[0048] 2121a Part 1

[0049] 2121b Part 2

[0050] 2121b1 Second connection hole

[0051] 21211 Pawl mounting hole

[0052] 2122 Second plate

[0053] 2123 Pad

[0054] 213 Restraining Pawl

[0055] 2131 Restraining Pin

[0056] 214 Reset Board

[0057] 2141 First Sliding Slot

[0058] 2142 Sliding protrusion

[0059] 2143 Positioning module mounting hole

[0060] 215 elastic element

[0061] 22 Vertical beam

[0062] 23. Sheave assembly

[0063] 24 Adjust the bracket

[0064] 241 Baffle

[0065] 25 Guide Shoe

[0066] 26 tensioning block

[0067] 10 First protruding hole

[0068] 20 Second protruding hole

[0069] 30 Positioning module

[0070] 31 Ball Column

[0071] 311 Housing

[0072] 312 Ball

[0073] 313 Return spring

[0074] 32 Connectors

[0075] 33 Protection compensation parts

[0076] 40 Positioning hole

[0077] P Mounting protrusion

[0078] S1 Storage Space

[0079] S2 Accommodation space. DETAILED DESCRIPTION

[0080] It should be understood that the drawings are not drawn to scale, but show various features that illustrate the basic principles of the invention in a slightly simplified manner. In the drawings of the present invention, the same reference numerals represent the same or equivalent parts of the present invention.

[0081] Reference will be made in detail to various embodiments of the present invention, examples of which are shown in the accompanying drawings and are described below. Although the present invention will be described in conjunction with exemplary embodiments of the present invention, it will be understood that this specification is not intended to limit the present invention to those exemplary embodiments. On the contrary, the present invention is intended to cover not only the exemplary embodiments of the present invention, but also various alternatives, modifications, equivalents and other embodiments included within the spirit and scope of the present invention as defined in the appended claims.

[0082] The specific structure and function description of the embodiments of the present invention disclosed herein are only used to illustrate the embodiments of the present invention. Without departing from the spirit and important features of the present invention, the present invention can be implemented in many different forms. Therefore, the embodiments of the present invention are disclosed only for the purpose of illustration and should not be construed as limiting the present invention.

[0083] Although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the teachings of the present invention, the first element discussed below may be referred to as the second element. Similarly, the second element may also be referred to as the first element.

[0084] Certain terms are used throughout this document to refer to specific system components. As will be appreciated by those skilled in the art, different names may often be used to refer to the same component, and thus this document is not intended to distinguish between components that differ only in name and not in function. In this document, the terms "include," "comprises," and "have" are used in an open format and should therefore be interpreted to mean "including, but not limited to ..."

[0085] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0086] Figure 1is a perspective schematic diagram of a speed governor tensioning device for an elevator according to an exemplary embodiment of the present invention, Figure 2 is a perspective schematic diagram of a fixing frame of a speed governor tensioning device for an elevator according to an exemplary embodiment of the present invention, Figure 3 is a perspective schematic diagram of a tensioning assembly of a speed governor tensioning device for an elevator according to an exemplary embodiment of the present invention, Figure 4 is a perspective schematic diagram of a column of a fixed frame according to an exemplary embodiment of the present invention, Figure 5 is a perspective schematic diagram of a restraining component of a tensioning weight assembly according to an exemplary embodiment of the present invention, Figure 6 is an exploded schematic diagram of a restraint component of a tensioning weight assembly according to an exemplary embodiment of the present invention, Figure 7 is a perspective schematic diagram of a positioning module of a restraint assembly according to an exemplary embodiment of the present invention, Figure 8 is a cross-sectional view of a positioning module of a restraint assembly according to an exemplary embodiment of the present invention, Fig. 9 Schematic diagram of a resetting process of a speed governor tensioning device for an elevator according to an exemplary embodiment of the present invention.

[0087] Reference Figures 1 to 8 The present invention relates to a speed governor tensioning device for an elevator, which comprises a fixed frame 1 and a tensioning assembly 2, wherein the fixed frame 1 can be fixed to a pit or a wall or an elevator guide rail.

[0088] The fixed frame 1 may include an upper beam 11, two columns 12 and a lower beam 13, wherein the two columns 12 extend in the vertical direction and are arranged parallel to each other, and the upper beam 11 and the lower beam 13 are respectively connected to the two columns 12, thereby forming a Figure 1 The rectangular frame structure shown in the figure has a hollow space formed inside. The tensioning weight assembly 2, which will be described in detail below, is installed to the fixed frame 1 and is located inside the rectangular frame structure. The tensioning weight assembly 2 is configured to be able to move in the vertical direction along the column 12 of the fixed frame 1.

[0089] In an exemplary embodiment of the present invention, the fixed frame 1 may further include: a guide rail 122, a ratchet structure 121 and an adjustment component, wherein the guide rails 122 are respectively arranged on the two columns 12 of the fixed frame 1, the tensioning weight assembly 2 is located between the two guide rails 122 and can move along the guide rails 122, the ratchet structure 121 is arranged on the column 12 of the fixed frame 1, and the adjustment component is configured to separate the constraint component 21 to be described in detail below from the ratchet structure 121 by a predetermined gap.

[0090] In the example shown, the number of ratchet structures 121 of the fixing frame 1 may be two, and the two ratchet structures 121 are respectively arranged on the two upright posts 12 to face each other obliquely. In addition, the number of adjustment components of the fixing frame 1 may also be two.

[0091] Furthermore, each adjustment assembly may include: a fixing bracket 1231 , an adjustment bolt 1232 and an adjustment bracket 24 .

[0092] The fixing bracket 1231 is an L-shaped plate, which includes a vertical section and a horizontal section. The vertical section is provided with a bracket mounting hole, and the horizontal section is provided with an adjustment hole, and the adjustment hole has an internal thread.

[0093] The fixed bracket 1231 can be installed to the column 12 of the fixed frame 1 by a fastener (such as a fastening bolt) passing through the bracket mounting hole of the vertical section, the adjusting bolt 1232 can be installed to the adjustment hole of the horizontal section of the fixed bracket 1231, and when the adjusting bolt 1232 is rotated, the adjusting bolt 1232 can move in the vertical direction, and the adjusting bracket 24 is installed to the tensioning weight assembly 2 and can cooperate with the adjusting bolt 1232.

[0094] Specifically, with reference Figure 2 The adjusting bolt 1232 can extend in the vertical direction through the adjusting hole of the horizontal section of the fixing bracket 1231, and the external threaded portion of the adjusting bolt 1232 engages with the internal threaded portion of the adjusting hole of the horizontal section of the fixing bracket 1231, so that when the adjusting bolt 1232 is rotated, the adjusting bolt 1232 can move in the vertical direction.

[0095] In addition, the fixed frame 1 may further include a safety switch 124, which is located at the lower end of the column 12, and its position is a position that the tensioning weight assembly 2 will not reach when the elevator is operating normally, so the safety switch 124 will not be activated when the elevator is operating normally. When the tensioning weight assembly 2 is abnormal and contacts the safety switch 124, the safety switch 124 is activated, so that an abnormal signal can be sent to the elevator control system, and the elevator control system stops the elevator, thereby avoiding safety problems of the elevator.

[0096] The tensioning weight assembly 2 may include a constraint component 21, which can cooperate with the ratchet structure 121. Specifically, when the elevator is operating normally, the constraint component 21 is not engaged with the ratchet structure 121, and when the elevator emergency brake or safety clamp is actuated, the constraint component 21 is engaged with the ratchet structure 121 to limit the movement of the tensioning weight assembly 2, thereby preventing the tensioning weight assembly 2 from jumping up and down.

[0097] The tensioning weight assembly 2 may further include: two vertical beams 22 , a rope pulley assembly 23 , a guide shoe 25 and a plurality of tensioning blocks 26 .

[0098] The two vertical beams 22 extend in the vertical direction and are arranged parallel to each other.

[0099] In the following, in order to describe the aspects and clearly express the various surfaces of the vertical beam 22, the reference Figure 3 , the position of the tensioning weight assembly 2 is limited.

[0100] The sheave assembly 23 is installed between the upper ends of the two vertical beams 22. The sheave assembly 23 includes a tensioning wheel (not shown), and the speed governor rope of the elevator passes through the hole of the upper beam 11 and passes around the tensioning wheel. More specifically, the sheave assembly 23 can be installed to the front inner surface and the rear inner surface of the two vertical beams 22, and the adjustment bracket 24 can be installed to the front outer surface and the rear outer surface of the upper end of the vertical beam 22.

[0101] In one embodiment of the present invention, fasteners (such as fastening bolts) can sequentially pass through the adjustment bracket 24, the front outer surface and the front inner surface of the vertical beam 22, the pulley assembly 23, the rear inner surface and the rear outer surface of the vertical beam 22, and the adjustment bracket 24 to connect the adjustment bracket 24, the vertical beam 22 and the pulley assembly 23 as a whole.

[0102] The adjustment bracket 24 can cooperate with the adjustment bolt 1232 to push the tensioning weight assembly 2 slightly downward.

[0103] The guide shoe 25 can be mounted to the left and right outer surfaces of the two vertical beams 22, that is, the guide shoe 25 can be mounted to the left outer surface of the left vertical beam 22, and the guide shoe 25 can be mounted to the right outer surface of the right vertical beam 22, and the guide shoe 25 is configured to clamp the guide rail 122. The guide shoe 25 can be made of high-hardness plastic and sheet metal.

[0104] A plurality of tension blocks 26 are located between lower portions of the two vertical beams 22 , and the plurality of tension blocks 26 are stacked on top of each other in the extending direction of the vertical beams 22 .

[0105] The tension block 26 may be made of metal and is used to apply a downward force to the rope sheave assembly 23 so that the speed governor rope of the elevator can be kept in a tensioned state.

[0106] By means of the above-mentioned structure of the tensioning weight assembly 2, the speed limiter rope of the elevator can be kept in a tensioned state at all times, thereby ensuring the safety of the elevator operation.

[0107] In the example shown, two adjustment brackets 24 can be provided, and the two adjustment brackets 24 are respectively mounted to the front outer surface and the rear outer surface of the upper end of the two vertical beams 22, that is, one of the two adjustment brackets 24 can be mounted to the front outer surface and the rear outer surface of the upper end of the left vertical beam 22, and the other of the two adjustment brackets 24 can be mounted to the front outer surface and the rear outer surface of the upper end of the right vertical beam 22, and each adjustment bracket 24 can be matched with a corresponding adjustment bolt 1232. Specifically, each adjustment bracket 24 is provided with a baffle 241, and the position of the baffle 241 corresponds to the position of the adjustment bolt 1232. In particular, when the elevator is operating normally, the adjusting bracket 24 is not in contact with the adjusting bolt 1232, and the lower end of the adjusting bolt 1232 is spaced a predetermined distance from the baffle 241 of the adjusting bracket 24; and in the case of emergency braking or actuation of the safety clamp of the elevator, when the constraint assembly 21 engages with the ratchet structure 121, when the speed limiter tensioning device needs to be reset, the adjusting bolt 1232 is rotated and the adjusting bolt 1232 can move downward, whereby the lower end of the adjusting bolt 1232 can push against the baffle 241 of the adjusting bracket 24, so that the tensioning weight assembly 2 can move slightly downward for the subsequent resetting process. The complete resetting process will be described in more detail below.

[0108] The guide shoe 25 is provided with a groove, and the groove faces the guide rail 122 to clamp the guide rail 122, thereby guiding the tensioning weight assembly 2 to move up and down along the guide rail 122. In the example shown, four guide shoes 25 are provided, and the four guide shoes 25 are symmetrically mounted to the left outer surface and the right outer surface of the two vertical beams 22, that is, two of the four guide shoes 25 are mounted to the left outer surface of the vertical beam 22 on the left, and the other two of the four guide shoes 25 are mounted to the right outer surface of the vertical beam 22 on the right. However, those skilled in the art should understand that the number of guide shoes 25 should not be limited to this, for example, the guide shoes 25 can be set to two, six or even more, which will not be repeated here.

[0109] In an exemplary embodiment of the present invention, corresponding to the number of ratchet structures 121 , two restraining assemblies 21 of the present invention are provided, and the two restraining assemblies 21 are respectively mounted on the outer surfaces of the two vertical beams 22 .

[0110] More specifically, with reference to Figure 3 The left restraint component 21 is installed to the left outer surface and the front outer surface of the left vertical beam 22, and the right restraint component 21 is installed to the right outer surface and the rear outer surface of the right vertical beam 22, so the left restraint component 21 and the right restraint component 21 face each other obliquely.

[0111] Since the structures of the two restraint components 21 are identical, the structure of the restraint component 21 on the right side will be described in detail below by taking the restraint component 21 on the right side as an example.

[0112] Furthermore, with reference Figures 5 to 8 The constraint assembly 21 may include: a first mounting bracket 211, a second mounting bracket 212, a constraint pawl 213, a reset plate 214 and an elastic element 215, wherein the first end of the first mounting bracket 211 is mounted to the right outer surface of the right vertical beam 22, and the second end of the first mounting bracket 211 protrudes from the right outer surface of the right vertical beam 22; the first end of the second mounting bracket 212 is mounted to the rear outer surface of the right vertical beam 22, and the second end of the second mounting bracket 212 can be inserted into the mounting hole 2111 of the first mounting bracket 211 to form an accommodating space S1; the restraining pawl 213 can be arranged in the accommodating space S1, and is configured to be rotatably mounted to the first mounting bracket 211 and the second mounting bracket 212 through the restraining pin 2131, and the restraining pawl 213 is configured to engage with the ratchet structure 121; the reset plate 214 can be connected to the first mounting bracket 211 and the second mounting bracket 212, and the reset plate 214 can move in the vertical direction to rotate the restraining pawl 213; the elastic element 215 is configured to be able to reset the restraining pawl 213 after rotation.

[0113] More specifically, the first mounting bracket 211 is an L-shaped plate, which includes a first portion 211a and a second portion 211b perpendicular to each other, wherein the first portion 211a is provided with a first connection hole 211a1, and a fastener (such as a fastening bolt) can pass through the first connection hole 211a1 to mount the first mounting bracket 211 to the right outer surface of the right vertical beam 22. The second portion 211b is provided with a mounting hole 2111, a second sliding groove 2112, and a pawl mounting hole 2113, wherein the mounting hole 2111 is used to connect with the second mounting bracket 212, the second sliding groove 2112 is used to cooperate with the reset plate 214, and the pawl mounting hole 2113 is used to install the restraining pin 2131.

[0114] According to an exemplary embodiment of the present invention, the second mounting bracket 212 is composed of a plurality of plates, which may include a first plate 2121 and a second plate 2122 .

[0115] The first plate 2121 is an L-shaped plate, which includes a first portion 2121a and a second portion 2121b perpendicular to each other, the first portion 2121a includes a mounting protrusion P and a first protruding hole 10, wherein the mounting protrusion P can be inserted into the mounting hole 2111 of the first mounting bracket 211, and the second portion 2121b is provided with a second connecting hole 2121b1, and a fastener (such as a fastening bolt) can pass through the second connecting hole 2121b1 to mount the first plate 2121 to the rear outer surface of the right vertical beam 22. In addition, the second portion 2121b of the first plate 2121 is provided with a positioning hole 40 and a pawl mounting hole 21211, the positioning hole 40 is used to cooperate with the positioning module 30 to be described in detail below, and the pawl mounting hole 21211 is used to install the restraining pin 2131.

[0116] The second plate 2122 has a roughly C-shape, and is connected to the first plate 2121. The first end of the second plate 2122 is mounted to the rear outer surface of the right vertical beam 22, and the second end of the second plate 2122 can be inserted into the first sliding groove 2141 of the reset plate 214 to be described in detail later.

[0117] The reset plate 214 includes a sliding protrusion 2142 , a second protruding hole 20 , and a first sliding groove 2141 .

[0118] The sliding protrusion 2142 may be inserted into the second sliding groove 2112 and may slide in the second sliding groove 2112 .

[0119] The first sliding groove 2141 and the second sliding groove 2112 extend in the vertical direction.

[0120] When the elevator operates normally, the first protruding hole 10 corresponds to the second protruding hole 20 , so that the binding pawl 213 can partially protrude from the first protruding hole 10 and the second protruding hole 20 , and the protruding portion of the binding pawl 213 can selectively engage the ratchet structure 121 .

[0121] In detail, when the elevator is operating normally, the protruding portion of the restraining pawl 213 does not engage with the ratchet structure 121, and when the elevator emergency brake or the safety clamp is actuated, the protruding portion of the restraining pawl 213 can engage with the ratchet structure 121 to limit the movement of the tensioning weight assembly 2, thereby preventing the tensioning weight assembly 2 from jumping up and down.

[0122] In the example shown, two restraining pawls 213 are provided in each restraining assembly 21, and the two restraining pawls 213 are spaced apart from each other in the vertical direction. Accordingly, two first protruding holes 10 and two second protruding holes 20 are provided respectively, and the number of the first protruding holes 10 and the second protruding holes 20 corresponds to the number of the restraining pawls 213. However, those skilled in the art should understand that the number of the restraining pawls 213 should not be limited thereto, for example, the restraining pawls 213 in each restraining assembly 21 can be provided as one, three or even more, which will not be described in detail herein.

[0123] In addition, the restraining pin 2131 can be installed in the pawl mounting hole 2113 and the pawl mounting hole 21211, and the restraining pawl 213 and the restraining pin 2131 are interference fit, so that the restraining pawl 213 can be fixed to the restraining pin 2131. Of course, other methods can also be used to fix the restraining ratchet 213 to the restraining pin 2131, such as using splines or welding to fix the two. The restraining pawl 213 is configured to be rotatable around the axis of the restraining pin 2131, such as clockwise or counterclockwise.

[0124] Preferably, a portion of the second end of the second plate 2122 protruding from the first sliding groove 2141 may be provided with an anti-separation member to prevent the second end of the second plate 2122 from being separated from the first sliding groove 2141 of the reset plate 214 .

[0125] In addition, the second mounting bracket 212 may further include a backing plate 2123, which may compensate for assembly problems caused by dimensional tolerance.

[0126] A fastener (eg, a fastening bolt) may simultaneously pass through the first plate 2121 , the second plate 2122 , and the backing plate 2123 to mount the first end of the second mounting bracket 212 to the rear outer surface of the right vertical beam 22 .

[0127] When the elevator emergency brake or the safety clamp is activated, the elevator speed limiter rope drives the tension weight assembly 2 to move upward, thereby causing the two restraining pawls 213 to engage with the two corresponding ratchet structures 121. Since the gap between the vertical beam 22 of the tension weight assembly 2 and the column 12 of the fixed frame 1 is small, the tension weight assembly 2 is stuck and cannot move after the restraining pawl 213 engages with the ratchet structure 121.

[0128] In addition, the reset plate 214 is further provided with a positioning module 30, and the first plate 2121 is provided with multiple positioning holes 40. The positioning module 30 cooperates with the positioning holes 40 to ensure the moving distance of the reset plate 214. In the example shown, two positioning holes 40 are provided, and the two positioning holes 40 are respectively an upper positioning hole and a lower positioning hole.

[0129] Figure 6 The position of the middle positioning module 30 is the position of the lower positioning hole in the positioning hole 40, and the reference Figure 7 and Figure 8 , Figure 7 shows a three-dimensional schematic diagram of the positioning module 30, Figure 8 A cross-sectional view of the positioning module 30 is shown.

[0130] In detail, the positioning module 30 may include a ball column 31 and a connector 32, wherein the ball column 31 includes a shell 311, a ball 312 and a reset spring 313, the shell 311 has an accommodating space S2 inside, part of the ball 312 and the reset spring 313 are located in the accommodating space S2, the inner circumferential surface of the connector 32 is engaged with the outer circumferential surface of the shell 311, and the connector 32 can be installed in the positioning module mounting hole 2143 of the reset plate 214.

[0131] Therefore, the positioning module 30 may move along with the movement of the reset plate 214 .

[0132] In addition, the positioning module 30 can further include a protective compensation part 33, which is connected to the outer peripheral surface of the shell 311. The protective compensation part 33 can cover the part other than the part where the connecting part 32 is connected to the ball column 31, so as to protect the ball column 31 and compensate for the axial size difference between the ball column 31 and the connecting part 32.

[0133] According to an exemplary embodiment of the present invention, the connector 32 may be in the form of a nut, and an internal thread is formed on the inner circumference of the connector 32, and an external thread is formed on the outer circumference of the housing 311, so that the connector 32 and the ball column 31 can be screwed together. In addition, the connector 32 can be mounted to the positioning module mounting hole 2143 of the reset plate 214 by welding, bonding, etc.

[0134] When the elevator operates normally, the ball 312 of the positioning module 30 is positioned in the lower positioning hole.

[0135] When the elevator emergency brake or the safety clamp is actuated and the constraint assembly 21 is engaged with the ratchet structure 121, when the speed limiter tensioning device 2 needs to be reset and the reset plate 214 moves upward, the ball 312 leaves the lower positioning hole. At this time, the ball 312 moves upward and moves in the direction that compresses the reset spring 313. The direction in which the ball 312 moves in the accommodating space S2 at this time is called the first direction.

[0136] When the ball 312 moves to the upper positioning hole, the reset spring 313 causes the ball 312 to move in a second direction, which is opposite to the first direction. Thus, when the ball 312 moves to the upper positioning hole, the operator can clearly feel the engagement of the ball 312 of the positioning module 30, thereby accurately ensuring the moving distance of the reset plate 214 and avoiding the problem of excessive or insufficient moving distance.

[0137] In addition, when the reset plate 214 moves downward to reset, the positioning module 30 moves from the upper positioning hole to the lower positioning hole. Due to such a snapping feeling, the accuracy of the reset of the reset plate 214 can be ensured, avoiding the problem of incomplete reset of the reset plate 214.

[0138] Hereinafter, the resetting process after the restraint assembly 21 is engaged with the ratchet structure 121 will be described in detail.

[0139] When the elevator emergency brake or the safety clamp is activated, after the constraint assembly 21 is engaged with the ratchet structure 121, the operator will perform a fault detection on the elevator. After eliminating the fault, the operator will reset the speed limiter tensioning device. The reset process includes the following steps: the first step is to rotate the adjustment bolt 1232, and the adjustment bolt 1232 moves downward to push against the baffle 241 of the adjustment bracket 24, so that the tensioning weight assembly 2 can move slightly downward, and then a certain gap can be formed between the constraint pawl 213 of the constraint assembly 21 and the ratchet structure 121 of the column 12; the second step is to lift the reset plate 214 of the constraint assembly 21 from point A to point B. At point A, the ball 312 of the positioning module 30 is positioned in the lower positioning hole, and at point B, the ball 312 of the positioning module 30 is positioned in the upper positioning hole. During the lifting process of the reset plate 214 of the constraint assembly 21, the reset plate 214 causes the constraint pawl 213 to rotate clockwise, that is, to rotate the constraint pawl 213 along the clockwise direction. The pawl 213 is retracted from the first protruding hole 10 and the second protruding hole 20. At this time, the constraint pawl 213 cannot partially protrude from the first protruding hole 10 and the second protruding hole 20, thereby the engagement state between the constraint component 21 and the ratchet structure 121 is released, and the tensioning weight assembly 2 can move in the vertical direction along the column 12 of the fixed frame 1 to obtain the desired tensioning force; the third step is to move the reset plate 214 of the constraint component 21 from point B to point A to restore to the normal operating state. At this time, the constraint pawl 213 rotates counterclockwise under the action of the elastic element 215 to a state in which the constraint pawl 213 partially protrudes from the first protruding hole 10 and the second protruding hole 20 but is not engaged with the ratchet structure 121.

[0140] As described above, through the engagement of the restraining assembly and the ratchet structure, the speed governor tensioning device for an elevator according to the present invention can prevent the tensioning weight assembly from bouncing up and down.

[0141] In addition, the speed governor tensioning device for an elevator according to the present invention can achieve rapid reset by adjusting the bolt and the reset plate.

[0142] The above descriptions of the specific exemplary embodiments of the present invention are presented for the purpose of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise form disclosed, and it is obvious that many modifications and changes can be made according to the above teachings. The selection and description of the exemplary embodiments are to explain certain principles of the present invention and their practical applications, so that those skilled in the art can make and use various exemplary embodiments of the present invention and their different alternative forms and modified forms. The scope of the present invention is intended to be limited by the appended claims and their equivalents.

[0143] Unless otherwise specifically stated or understood otherwise within the context of use, conditional language such as "can," "may," "might," or "could" is generally intended to convey that certain embodiments may include, but are not required to include, certain features and / or elements. Thus, such conditional language is generally not intended to imply that one or more embodiments must in any way include the features and / or elements.

Claims

1. A speed governor tensioning device for an elevator, characterized in that: include: A fixed frame, comprising an upper beam, two upright posts and a lower beam, wherein the upright posts of the fixed frame are provided with ratchet structures; and A tensioning weight assembly is mounted on the fixed frame and connected to the speed governor rope of the elevator. The tensioning weight assembly is configured to be able to move in the vertical direction along the column of the fixed frame. The tensioning weight assembly includes a restraining component that can cooperate with the ratchet structure to limit the up and down movement of the tensioning weight assembly.

2. The speed governor tensioning device for an elevator according to claim 1, characterized in that: The fixed frame further comprises: A guide rail, which is arranged on two uprights of the fixed frame, the tensioning weight assembly is located between the two guide rails and can move along the guide rails; and an adjustment assembly configured to separate the restraining assembly from the ratchet structure by a predetermined gap; There are two ratchet structures, which are respectively arranged on two upright posts to face each other obliquely.

3. The speed governor tensioning device for an elevator according to claim 2, characterized in that: The adjustment component comprises: A fixed bracket mounted to a column of the fixed frame; an adjusting bolt mounted to the fixing bracket, the adjusting bolt being movable in a vertical direction when the adjusting bolt is rotated; and An adjustment bracket is mounted to the tension weight assembly and is capable of cooperating with the adjustment bolt.

4. The speed governor tensioning device for an elevator according to claim 3, characterized in that: The tensioning weight assembly further comprises: two vertical beams extending in a vertical direction and parallel to each other; a sheave assembly including a tensioning wheel around which a speed governor rope of the elevator is wound, the sheave assembly being located between the upper ends of two vertical beams and the sheave assembly being connected to the inner surface of the vertical beams; a guide shoe mounted to an outer surface of the vertical beam, and the guide shoe is configured to clamp the guide rail; and A plurality of tension blocks are located between the lower portions of the two vertical beams, and the plurality of tension blocks are stacked on top of each other in the extension direction of the vertical beams; Wherein, the adjustment bracket is mounted to the outer surface of the upper end portion of the vertical beam.

5. The speed governor tensioning device for an elevator according to claim 4, characterized in that: The number of the restraining components is two, and the two restraining components are respectively mounted on the outer surfaces of the two vertical beams. When the elevator is emergency braked or the safety clamp is actuated, the restraining components engage with the ratchet structure to limit the movement of the tensioning weight assembly.

6. The speed governor tensioning device for an elevator according to claim 5, characterized in that: Each constraint component consists of: a first mounting bracket, a first end of which is mounted to the outer surface of the vertical beam, and a second end of the first mounting bracket protrudes from the outer surface of the vertical beam; A second mounting bracket, a first end of which is mounted to the outer surface of the vertical beam, and a second end of the second mounting bracket is inserted into the mounting hole of the first mounting bracket to form an accommodating space; a restraining pawl disposed in the accommodation space and configured to be rotatably mounted to the first mounting bracket and the second mounting bracket via a restraining pin, the restraining pawl being configured to engage with the ratchet structure; a reset plate connected to the first mounting bracket and the second mounting bracket, the reset plate being movable in a vertical direction to rotate the restraining pawl; and The elastic element is configured to reset the constraining pawl after rotation.

7. The speed governor tensioning device for an elevator according to claim 6, characterized in that: The second mounting bracket is provided with a first protruding hole; The reset plate is provided with a second protruding hole; Wherein, when the elevator is operating normally, the first protruding hole corresponds to the second protruding hole, so that the restraining pawl partially protrudes from the first protruding hole and the second protruding hole.

8. The speed governor tensioning device for an elevator according to claim 7, characterized in that: The second mounting bracket comprises: A first plate member, a first end of which is mounted to an outer surface of the vertical beam, a second end of the first plate member being provided with a mounting protrusion, the mounting protrusion being inserted into a mounting hole of the first mounting bracket; and A second plate member is connected to the first plate member, and a first end of the second plate member is mounted to an outer surface of the vertical beam.

9. The speed governor tensioning device for an elevator according to claim 8, characterized in that: The reset plate is provided with a first sliding groove, and the second end of the second plate is inserted into the first sliding groove of the reset plate; The first mounting bracket is provided with a second sliding slot; The reset plate is provided with a sliding protrusion, and the sliding protrusion is inserted into the second sliding groove and can slide in the second sliding groove; Wherein, the first sliding groove and the second sliding groove extend in a vertical direction.

10. The speed governor tensioning device for an elevator according to claim 9, characterized in that: The reset plate is further provided with a positioning module, the first plate is provided with a plurality of positioning holes, and the positioning module cooperates with the positioning holes to ensure the moving distance of the reset plate.

11. An elevator, characterized in that: The invention comprises a speed governor tensioning device for an elevator according to any one of claims 1 to 10.

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