Ratchet wheel locking convenient and stable protective guardrail

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a ratchet wheel locking convenient and stable protective guardrail which comprises an upper guardrail transverse pipe set, a middle guardrail transverse pipe set, a lower guardrail transverse pipe set, a right-turning power arm assembly and a left-turning power arm assembly. The guardrail upper transverse pipe set, the right-turning power arm assembly, the guardrail middle transverse pipe set and the left-turning power arm assembly form a crank structure, the guardrail middle transverse pipe set, the right-turning power arm assembly, the guardrail lower transverse pipe set and the left-turning power arm assembly also form a crank structure, and the crank structure and an upper crank form a composite linkage mechanism. The composite linkage mechanism is connected with the bed body through the right rotating power arm fixing base and the left rotating power arm fixing base, the right rotating power arm assembly, the composite linkage mechanism, the left rotating power arm assembly and the bed body form a new composite linkage mechanism, and a ratchet wheel switch assembly is arranged to control a guardrail folding switch. The guardrail is driven to move up and down in cooperation with a composite linkage mechanism, and the guardrail is simple in structure and flexible to open and close.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a kind of ratchet locking convenient stable protection guardrail. BACKGROUND

[0002] With the continuous improvement of medical care level, the safety and comfort of sickbed have attracted more and more attention. As an important part of sickbed, sickbed protection guardrail is mainly used to prevent patients from falling out of bed accidentally during sleep or rest, especially for patients with unclear consciousness, difficulty in movement or special care. Traditional protection guardrails are mostly fixed design, which can provide basic protection, but have deficiencies in use flexibility and patient comfort. In recent years, with the application of new materials and new technologies, more adjustable and easy-to-operate modern protection guardrails have appeared on the market, which not only enhance safety, but also improve patient experience and work efficiency of medical staff.

[0003] Chinese patent (authorized announcement number: CN 219271380 U, authorized announcement date: 2023.06.30) proposes a kind of medical bed convenient to adjust, the utility model includes lifting mechanism and contraction mechanism;Servo motor works, can be rotated shaft drives first bevel gear to rotate, first bevel gear can drive second bevel gear to rotate, second bevel gear rotates can drive threaded rod to rotate in fixed box, in turn drive threaded rod to lift, threaded rod passes through support block and hinge plate can drive lifting box to lift, in turn drive medical bed to lift, change the mode of lifting by hand rotating rocker and the mode of lifting by setting folding frame inside, facilitate the height of medical bed adjustment, also do not increase large folding frame, reduce the weight of medical bed.

[0004] The protection guardrail in the above-mentioned patent can adjust the height of the guardrail by folding, but the folding switch of the guardrail has poor flexibility, and no buffer component is provided to buffer the sagging force when the guardrail is folded, which can easily cause damage to the guardrail, and the guardrail cannot be fixed when it is folded down. Therefore, we propose a kind of ratchet locking convenient stable protection guardrail. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of ratchet lock convenient and stable protection guardrail, and the upper cross pipe group of guardrail is movably hinged on right rotary arm assembly, left rotary arm assembly by upper cross pipe right rotating shaft, upper cross pipe left rotating shaft, the middle cross pipe group of guardrail is movably hinged on right rotary arm assembly, left rotary arm assembly by middle cross pipe right rotating shaft, middle cross pipe left rotating shaft, the lower cross pipe group of guardrail is movably hinged on right rotary arm assembly, left rotary arm assembly by lower cross pipe right rotating shaft, lower cross pipe left rotating shaft, so that the upper cross pipe group of guardrail, right rotary arm assembly, the middle cross pipe group of guardrail, left rotary arm assembly form crank structure, and the middle cross pipe group of guardrail, right rotary arm assembly, the lower cross pipe group of guardrail, left rotary arm assembly also form crank structure and with last crank form composite linkage mechanism, the above-mentioned composite linkage mechanism is connected with bed body by rotary arm fixed seat right, rotary arm fixed seat left, again by right rotary arm assembly, composite linkage mechanism, left rotary arm assembly, bed body and form new composite linkage mechanism, ratchet switch assembly is installed between switch ratchet seat and right rotary arm assembly, the switch of ratchet switch assembly is controlled by switch ratchet tooth, and then cooperate composite linkage mechanism to drive the up and down movement of the upper cross pipe group of guardrail, the middle cross pipe group of guardrail, the lower cross pipe group of guardrail, the ratchet switch assembly structure is simple, and switch is flexible;Buffering assembly is installed in the bottom of right rotary arm assembly and left rotary arm assembly, when guardrail is folded and placed, the sagging force of guardrail is buffered by buffering assembly, to avoid damaging guardrail;Locking mechanism is installed between the guardrail stop connector and right rotary arm assembly, when guardrail is raised or lowered to the required height, the stop shaft on locking mechanism and guardrail stop connector will be in contact and mutually stop, to make that guardrail is locked, solve the problem in the background.

[0006] In order to achieve the above object, the utility model discloses a ratchet locking convenient stable protection guardrail through the following technical scheme, a guardrail upper cross pipe group, guardrail middle cross pipe group, guardrail lower cross pipe group, right rotation power arm assembly and left rotation power arm assembly are set up, the inside of guardrail upper cross pipe group is provided with guardrail upper cross pipe, the left and right ends of guardrail upper cross pipe are fixed respectively and insert the upper cross pipe connecting head and switch ratchet seat, the inside of guardrail middle cross pipe group is provided with guardrail middle cross pipe, the left and right ends of guardrail middle cross pipe are fixed respectively and insert middle cross pipe connecting head and guardrail stop connecting head, the inside of guardrail lower cross pipe group is provided with guardrail lower cross pipe, the left and right ends of guardrail lower cross pipe are fixed respectively and insert lower cross pipe left connecting head and lower cross pipe right connecting head, the front side of right rotation power arm assembly is fixedly connected with lower cross pipe right rotation shaft, middle cross pipe right rotation shaft and upper cross pipe right rotation shaft in proper order from below, the front side of left rotation power arm assembly is fixedly connected with lower cross pipe left rotation shaft, middle cross pipe left rotation shaft and upper cross pipe left rotation shaft in proper order from below, switch ratchet seat, guardrail stop connecting head and lower cross pipe right connecting head are rotatably connected on upper cross pipe right rotation shaft, middle cross pipe right rotation shaft and lower cross pipe right rotation shaft respectively, upper cross pipe connecting head, middle cross pipe connecting head and lower cross pipe left connecting head are rotatably connected on upper cross pipe left rotation shaft, middle cross pipe left rotation shaft and lower cross pipe left rotation shaft respectively, switch ratchet seat and right rotation power arm assembly are installed with ratchet switch assembly between, the bottom of right rotation power arm assembly and left rotation power arm assembly is installed with buffer assembly, guardrail stop connecting head and right rotation power arm assembly are installed with locking mechanism between.

[0007] Preferably, the ratchet switch assembly includes a switch ratchet tooth and a ratchet tooth power torsional spring, the top front side of the right rotation power arm assembly is fixedly connected with three groups of switch rotation shafts, the three groups of switch rotation shafts are all arranged on the right side of the upper cross pipe right rotation shaft, and the three groups of switch rotation shafts are distributed in a triangular shape, the switch ratchet tooth is rotatably sleeved on one of the switch rotation shafts, the ratchet tooth power torsional spring is rotatably sleeved on another one of the switch rotation shafts, the switch ratchet tooth is engaged with the switch ratchet seat, and the two ends of the ratchet tooth power torsional spring are respectively abutted against the right side of the switch ratchet tooth and the top side of the third group of switch rotation shafts.

[0008] Preferably, the buffer assembly includes a right rotation power arm fixed seat and a left rotation power arm fixed seat, the bottom rear side of the right rotation power arm assembly and the left rotation power arm assembly is fixedly connected with a rotation power arm shaft, a power arm buffer torsional spring and a rotation power arm shaft sleeve are movably hinged on the two groups of rotation power arm shafts, one end of each of the two groups of power arm buffer torsional springs is fixedly connected to the rear side of the right rotation power arm assembly and the left rotation power arm assembly, the other end of each of the two groups of power arm buffer torsional springs is abutted against the rotation power arm shaft sleeve, and the two groups of rotation power arm shaft sleeves are fixedly installed on the right rotation power arm fixed seat and the left rotation power arm fixed seat respectively.

[0009] Preferably, the locking mechanism comprises a guardrail stop shaft fixedly connected to the middle front side of the right rotating force arm assembly, and the guardrail stop shaft is arranged at the right side of the right rotating shaft of the middle cross pipe, and the outer surface of the guardrail stop shaft abuts against the side surface of the guardrail stop connector.

[0010] Preferably, the right force arm decorative cover group is fixedly installed on the right rotating force arm assembly by bolts.

[0011] Preferably, the left force arm decorative cover group is fixedly installed on the left rotating force arm assembly by bolts.

[0012] Preferably, the upper cross pipe, the middle cross pipe and the lower cross pipe of the guardrail are all made of square non-woven steel pipes, and the upper cross pipe, the middle cross pipe and the lower cross pipe are arranged at equal distances.

[0013] Preferably, the right rotating force arm assembly and the left rotating force arm assembly are both made of high-strength stainless steel plates.

[0014] The utility model provides a kind of ratchet wheel lock convenient and stable protection guardrail.Compared with prior art, it has the following beneficial effects:

[0015] 1、This kind of ratchet wheel lock convenient and stable protection guardrail, guardrail upper cross pipe group is movably hinged on right rotating force arm assembly, left rotating force arm assembly by upper cross pipe right rotating shaft, upper cross pipe left rotating shaft, guardrail middle cross pipe group is movably hinged on right rotating force arm assembly, left rotating force arm assembly by middle cross pipe right rotating shaft, middle cross pipe left rotating shaft, guardrail lower cross pipe group is movably hinged on right rotating force arm assembly, left rotating force arm assembly by lower cross pipe right rotating shaft, lower cross pipe left rotating shaft, so that guardrail upper cross pipe group, right rotating force arm assembly, guardrail middle cross pipe group, left rotating force arm assembly form crank structure, and guardrail middle cross pipe group, right rotating force arm assembly, guardrail lower cross pipe group, left rotating force arm assembly also form crank structure and with last crank form composite linkage mechanism, and the above-mentioned composite linkage mechanism is connected with bed body by rotating force arm fixed seat right, rotating force arm fixed seat left, and new composite linkage mechanism is formed by right rotating force arm assembly, composite linkage mechanism, left rotating force arm assembly, bed body again, switch ratchet seat is installed between right rotating force arm assembly, and ratchet switch assembly is installed between right rotating force arm assembly, and the switch of ratchet switch assembly is controlled by switch ratchet tooth, and then composite linkage mechanism is cooperated to drive the up and down movement of guardrail upper cross pipe group, guardrail middle cross pipe group, guardrail lower cross pipe group, and the ratchet switch assembly structure is simple, and switch is flexible.

[0016] 2、This kind of ratchet wheel lock convenient and stable protection guardrail, buffer assembly is installed at the bottom of right rotating force arm assembly and left rotating force arm assembly, when guardrail is folded and placed, the sagging force of guardrail is buffered by buffer assembly, to avoid damaging guardrail.

[0017] 3. The ratchet lock convenient and stable protection fence, a locking mechanism is installed between the fence stop connector and the right rotating force arm assembly, when the fence is raised or lowered to the required height, the stop shaft on the locking mechanism and the fence stop connector are in contact and stop each other, so that the fence is locked. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structure schematic view of the fence and the bed head plate and the bed tail plate of the utility model;

[0019] Figure 2 It is a structure schematic view of the fence in the locked state of the utility model system;

[0020] Figure 3 It is a structure schematic view of the fence in the unlocked state of the utility model system;

[0021] Figure 4 It is a front view structure schematic view of the fence of the utility model;

[0022] Figure 5 It is a split structure schematic view of each component of the fence of the utility model;

[0023] Figure 6 It is a structure schematic view of the switch locking and unlocking when the fence is raised of the utility model;

[0024] Figure 7 It is a structure schematic view of the switch unlocking when the fence is lowered and the switch locking when the fence is raised of the utility model;

[0025] Figure 8 It is a structure schematic view of the switch locking and unlocking when the fence is raised of the utility model; Figure 5 It is an enlarged structure schematic view of the structure at A of the utility model.

[0026] In the figure: 100, the upper rail pipe group; 101, the switch ratchet seat; 102, the upper rail pipe; 103, the upper rail pipe connector; 200, the middle rail pipe group; 201, the rail stop connector; 202, the middle rail pipe; 203, the middle rail pipe connector; 300, the lower rail pipe group; 301, the right lower rail pipe connector; 302, the lower rail pipe; 303, the left lower rail pipe connector; 401, the switch ratchet tooth; 402, the ratchet tooth power torsional spring; 500, the right rotating force arm assembly; 501, the lower rail pipe right rotating shaft; 502, the middle rail pipe right rotating shaft; 503, the upper rail pipe right rotating shaft; 504, the force arm buffer torsional spring; 505, the rotating force arm shaft sleeve; 506, the rotating force arm shaft; 507, the rotating force arm fixed seat right; 508, the rail stop shaft; 509, the switch rotating shaft; 510, the right force arm decorative cover group; 600, the left rotating force arm assembly; 601, the lower rail pipe left rotating shaft; 602, the middle rail pipe left rotating shaft; 603, the upper rail pipe left rotating shaft; 604, the rotating force arm fixed seat left; 605, the left force arm decorative cover group. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] Please refer to Figures 1-8The utility model provides a technical scheme: a kind of ratchet locking convenient stable protection guardrail, including guardrail upper cross pipe group 100, guardrail middle cross pipe group 200, guardrail lower cross pipe group 300, right rotation power arm assembly 500 and left rotation power arm assembly 600, the inside of guardrail upper cross pipe group 100 is provided with guardrail upper cross pipe 102, the left and right ends of guardrail upper cross pipe 102 are respectively fixed and inserted with upper cross pipe connecting head 103 and switch ratchet seat 101, the inside of guardrail middle cross pipe group 200 is provided with guardrail middle cross pipe 202, the left and right ends of guardrail middle cross pipe 202 are respectively fixed and inserted with middle cross pipe connecting head 203 and guardrail stop connecting head 201, the inside of guardrail lower cross pipe group 300 is provided with guardrail lower cross pipe 302, the left and right ends of guardrail lower cross pipe 302 are respectively fixed and inserted with lower cross pipe left connecting head 303 and lower cross pipe right connecting head 301, the front side of right rotation power arm assembly 500 is sequentially fixed and connected with lower cross pipe right rotation shaft 501, middle cross pipe right rotation shaft 502 and upper cross pipe right rotation shaft 503 from below, the front side of left rotation power arm assembly 600 is sequentially fixed and connected with lower cross pipe left rotation shaft 601, middle cross pipe left rotation shaft 602 and upper cross pipe left rotation shaft 603 from below, switch ratchet seat 101, guardrail stop connecting head 201 and lower cross pipe right connecting head 301 are respectively rotationally connected on upper cross pipe right rotation shaft 503, middle cross pipe right rotation shaft 502 and lower cross pipe right rotation shaft 501, upper cross pipe connecting head 103, middle cross pipe connecting head 203 and lower cross pipe left connecting head 303 are respectively rotationally connected on upper cross pipe left rotation shaft 603, middle cross pipe left rotation shaft 602 and lower cross pipe left rotation shaft 601, switch ratchet seat 101 and right rotation power arm assembly 500 between installation have ratchet switch assembly, the bottom of right rotation power arm assembly 500 and left rotation power arm assembly 600 is equipped with buffer assembly, guardrail stop connecting head 201 and right rotation power arm assembly 500 between installation have locking mechanism.

[0029] The upper rail transverse pipe group 100 of the guardrail is movably connected with the left rotating force arm assembly 600 and the right rotating force arm assembly 500 through the upper transverse pipe connecting head 103 and the switch ratchet seat 101, the middle rail transverse pipe group 200 of the guardrail is movably connected with the left rotating force arm assembly 600 and the right rotating force arm assembly 500 through the middle transverse pipe connecting head 203 and the guardrail stop connecting head 201, and the lower rail transverse pipe group 300 of the guardrail is movably connected with the left rotating force arm assembly 600 and the right rotating force arm assembly 500 through the lower transverse pipe left connecting head 303 and the lower transverse pipe right connecting head 301, so that the upper rail transverse pipe group 100, the right rotating force arm assembly 500, the middle rail transverse pipe group 200 and the left rotating force arm assembly 600 form a crank structure, the middle rail transverse pipe group 200, the right rotating force arm assembly 500, the lower rail transverse pipe group 300 and the left rotating force arm assembly 600 also form a crank structure and constitute a composite linkage mechanism with the above crank, the composite linkage mechanism is connected with the bed body through the rotating force arm fixed seat right 507 and the rotating force arm fixed seat left 604, the right rotating force arm assembly 500, the composite linkage mechanism, the left rotating force arm assembly 600 and the bed body constitute a new composite linkage mechanism, the switch of the ratchet switch assembly is matched, the up-down movement of the guardrail is realized, the sagging force of the guardrail when the guardrail is lowered is buffered through the buffer assembly, and the guardrail is locked when the guardrail is raised or lowered to the required height through the locking mechanism, so that the guardrail can only be raised and lowered within a certain range.

[0030] The ratchet switch assembly comprises the switch ratchet tooth 401 and the ratchet tooth power torsional spring 402, three groups of switch rotating shafts 509 are fixedly connected to the top front side of the right rotating force arm assembly 500, the three groups of switch rotating shafts 509 are arranged on the right side of the upper transverse pipe right rotating shaft 503 and are in triangular distribution, the switch ratchet tooth 401 is rotatably sleeved on one of the three groups of switch rotating shafts 509, the ratchet tooth power torsional spring 402 is rotatably sleeved on another one of the three groups of switch rotating shafts 509, the switch ratchet tooth 401 is engaged with the switch ratchet seat 101, and the two ends of the ratchet tooth power torsional spring 402 abut against the right side of the switch ratchet tooth 401 and the top side of the third group of switch rotating shafts 509 respectively.

[0031] When the ratchet switch assembly needs to be unlocked, the right side of the switch ratchet tooth 401 is pressed to make the switch ratchet tooth 401 disengage from the switch ratchet seat 101, so that the guardrail can normally be raised and lowered, and when the ratchet switch assembly needs to be locked, the pressing on the right side of the switch ratchet tooth 401 is released, so that the switch ratchet tooth 401 rotates under the action of the ratchet tooth power torsional spring 402, so that the switch ratchet tooth 401 reengages with the switch ratchet seat 101, and the locking of the guardrail is completed.

[0032] The buffer assembly comprises a right rotating force arm fixing seat 507 and a left rotating force arm fixing seat 604, the bottom rear side of the right rotating force arm assembly 500 and the left rotating force arm assembly 600 is fixedly connected with a rotating force arm shaft 506, the rotating force arm shaft 506 is movably hinged with a force arm buffer torsional spring 504 and a rotating force arm shaft sleeve 505, one end of the two force arm buffer torsional springs 504 is fixedly connected to the rear side of the right rotating force arm assembly 500 and the left rotating force arm assembly 600 respectively, the other end of the two force arm buffer torsional springs 504 abuts against the rotating force arm shaft sleeve 505, and the two rotating force arm shaft sleeves 505 are fixedly installed on the right rotating force arm fixing seat 507 and the left rotating force arm fixing seat 604 respectively.

[0033] When the guardrail is lowered, the right rotating force arm assembly 500 and the left rotating force arm assembly 600 drive the rotating force arm shaft 506 to rotate, at this time, one end of the force arm buffer torsional spring 504 abuts against the rotating force arm shaft sleeve 505, and the other end is fixedly connected to the right rotating force arm assembly 500 and the left rotating force arm assembly 600, when the right rotating force arm assembly 500 and the left rotating force arm assembly 600 rotate, the force arm buffer torsional spring 504 is buffered through torsion.

[0034] The locking mechanism comprises a guardrail stop shaft 508, the guardrail stop shaft 508 is fixedly connected to the middle part of the front side of the right rotating force arm assembly 500, and the guardrail stop shaft 508 is arranged on the right side of the right middle horizontal pipe rotating shaft 502, and the outer surface of the guardrail stop shaft 508 abuts against the side surface of the guardrail stop connecting head 201.

[0035] When the guardrail is raised or lowered to the required height, the guardrail stop shaft 508 and the guardrail stop connecting head 201 contact and brake each other, so that the guardrail can only be raised and lowered within a certain range.

[0036] The right force arm decorative cover group 510 is fixedly installed on the right rotating force arm assembly 500 through bolts, for protecting the internal structure of the right rotating force arm assembly 500.

[0037] The left force arm decorative cover group 605 is fixedly installed on the left rotating force arm assembly 600 through bolts, for protecting the internal structure of the left rotating force arm assembly 600.

[0038] The guardrail upper horizontal pipe 102, the guardrail middle horizontal pipe 202 and the guardrail lower horizontal pipe 302 are all made of square non-enameled steel pipes, and the guardrail upper horizontal pipe 102, the guardrail middle horizontal pipe 202 and the guardrail lower horizontal pipe 302 are arranged at equal intervals, so that the distance between the guardrail upper horizontal pipe 102, the guardrail middle horizontal pipe 202 and the guardrail lower horizontal pipe 302 increases or decreases simultaneously with the raising and lowering of the guardrail, thereby improving the strength and aesthetic appearance of the guardrail.

[0039] The right rotating force arm assembly 500 and the left rotating force arm assembly 600 are both made of high-strength stainless steel plates, thereby enhancing the strength of the guardrail.

[0040] Working principle: the upper cross pipe group 100 of the guardrail is movably connected with the left rotating force arm assembly 600 and the right rotating force arm assembly 500 through the upper cross pipe connecting head 103 and the switch ratchet seat 101, the middle cross pipe group 200 of the guardrail is movably connected with the left rotating force arm assembly 600 and the right rotating force arm assembly 500 through the middle cross pipe connecting head 203 and the guardrail stop connecting head 201, and the lower cross pipe group 300 of the guardrail is movably connected with the left rotating force arm assembly 600 and the right rotating force arm assembly 500 through the lower cross pipe left connecting head 303 and the lower cross pipe right connecting head 301, so that the upper cross pipe group 100 of the guardrail, the right rotating force arm assembly 500, the middle cross pipe group 200 of the guardrail, and the left rotating force arm assembly 600 form a crank structure, and the middle cross pipe group 200 of the guardrail, the right rotating force arm assembly 500, the lower cross pipe group 300 of the guardrail, and the left rotating force arm assembly 600 also form a crank structure and constitute a composite linkage mechanism with the previous crank, the composite linkage mechanism is connected with the bed body through the rotating force arm fixed seat right 507 and the rotating force arm fixed seat left 604, and the right rotating force arm assembly 500, the composite linkage mechanism, the left rotating force arm assembly 600, and the bed body constitute a new composite linkage mechanism, when the right side of the switch ratchet tooth 401 is pressed, the switch ratchet tooth 401 is disengaged from the switch ratchet seat 101, so that the up and down movement of the guardrail is realized, after the up and down adjustment of the guardrail is completed, the pressing of the right side of the switch ratchet tooth 401 is released, the switch ratchet tooth 401 rotates under the action of the ratchet tooth power torsional spring 402, so that the switch ratchet tooth 401 is re-engaged with the switch ratchet seat 101, and the locking of the guardrail is completed, when the guardrail is lowered, the right rotating force arm assembly 500 and the left rotating force arm assembly 600 drive the rotating force arm shaft 506 to rotate, at this time, one end of the force arm buffer torsional spring 504 abuts on the rotating force arm shaft sleeve 505, and one end is fixedly connected to the right rotating force arm assembly 500 and the left rotating force arm assembly 600, when the right rotating force arm assembly 500 and the left rotating force arm assembly 600 rotate, the force arm buffer torsional spring 504 buffers through torsion, buffers the sagging force when the guardrail is lowered, and when the guardrail is raised or lowered to the required height, the guardrail stop shaft 508 and the guardrail stop connecting head 201 contact and brake each other, so that the guardrail can only be raised and lowered within a certain range.

[0041] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0042] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A ratchet locking convenient stable guardrail, comprising a guardrail upper cross pipe group (100), a guardrail middle cross pipe group (200), a guardrail lower cross pipe group (300), a right rotating force arm assembly (500) and a left rotating force arm assembly (600), characterized in that: The upper rail transverse pipe group (100) is internally provided with an upper rail transverse pipe (102), the left and right ends of the upper rail transverse pipe (102) are respectively fixedly connected with an upper transverse pipe connector (103) and a switch ratchet seat (101), the middle rail transverse pipe group (200) is internally provided with a middle rail transverse pipe (202), the left and right ends of the middle rail transverse pipe (202) are respectively fixedly connected with a middle transverse pipe connector (203) and a rail stop connector (201), the lower rail transverse pipe group (300) is internally provided with a lower rail transverse pipe (302), the left and right ends of the lower rail transverse pipe (302) are respectively fixedly connected with a lower transverse pipe left connector (303) and a lower transverse pipe right connector (301), the front side of the right rotating force arm assembly (500) is sequentially fixedly connected with a lower transverse pipe right rotating shaft (501), a middle transverse pipe right rotating shaft (502) and an upper transverse pipe right rotating shaft (503) from bottom to top, the front side of the left rotating force arm assembly (600) is sequentially fixedly connected with a lower transverse pipe left rotating shaft (601), a middle transverse pipe left rotating shaft (602) and an upper transverse pipe left rotating shaft (603) from bottom to top, the switch ratchet seat (101), the rail stop connector (201) and the lower transverse pipe right connector (301) are respectively rotationally connected on the upper transverse pipe right rotating shaft (503), the middle transverse pipe right rotating shaft (502) and the lower transverse pipe right rotating shaft (501), the upper transverse pipe connector (103), the middle transverse pipe connector (203) and the lower transverse pipe left connector (303) are respectively rotationally connected on the upper transverse pipe left rotating shaft (603), the middle transverse pipe left rotating shaft (602) and the lower transverse pipe left rotating shaft (601), the switch ratchet seat (101) and the right rotating force arm assembly (500) are provided with a ratchet switch assembly, the bottom of the right rotating force arm assembly (500) and the left rotating force arm assembly (600) are provided with a buffer assembly, and the rail stop connector (201) and the right rotating force arm assembly (500) are provided with a locking mechanism.

2. A ratchet lock convenient stabilizing protective guardrail according to claim 1, characterized in that: The ratchet switch assembly comprises a switch ratchet tooth (401) and a ratchet tooth power torsional spring (402), the top front side of the right rotating force arm assembly (500) is fixedly connected with three groups of switch rotating shafts (509), the three groups of switch rotating shafts (509) are arranged on the right side of the upper transverse pipe right rotating shaft (503) and are in triangular distribution, the switch ratchet tooth (401) is rotationally sleeved on one group of switch rotating shafts (509), the ratchet tooth power torsional spring (402) is rotationally sleeved on another group of switch rotating shafts (509), the switch ratchet tooth (401) is engaged with the switch ratchet seat (101), and the two ends of the ratchet tooth power torsional spring (402) are respectively abutted against the right side of the switch ratchet tooth (401) and the top side of the third group of switch rotating shafts (509).

3. A ratchet lock convenient stabilizing protective guardrail according to claim 2, characterized in that: The buffer assembly comprises right (507) and left (604) rotating force arm fixing seats, the bottom rear side of the right (500) and left (600) rotating force arm assemblies is fixedly connected with a rotating force arm shaft (506), the rotating force arm shaft (506) is movably hinged with a force arm buffer torsion spring (504) and a rotating force arm shaft sleeve (505), one end of the force arm buffer torsion spring (504) is fixedly connected to the rear side of the right (500) and left (600) rotating force arm assemblies, the other end of the force arm buffer torsion spring (504) abuts against the rotating force arm shaft sleeve (505), and the rotating force arm shaft sleeve (505) is fixedly installed on the right (507) and left (604) rotating force arm fixing seats.

4. A ratchet lock convenient stabilizing protective guardrail according to claim 3, characterized in that: The locking mechanism comprises a guardrail stop shaft (508), the guardrail stop shaft (508) is fixedly connected to the middle front side of the right rotating force arm assembly (500), the guardrail stop shaft (508) is arranged on the right side of the right middle horizontal pipe rotating shaft (502), and the outer surface of the guardrail stop shaft (508) abuts against the side surface of the guardrail stop connecting head (201).

5. A ratchet lock convenient stabilizing guardrail according to claim 4, characterized in that: The right force arm decorative cover group (510) is fixedly installed on the right rotating force arm assembly (500) through bolts.

6. A ratchet lock convenient stabilizing guardrail according to claim 5, characterized in that: The left force arm decorative cover group (605) is fixedly installed on the left rotating force arm assembly (600) through bolts.

7. A ratchet lock convenient stabilizing guardrail according to claim 6, characterized in that: The guardrail upper horizontal pipe (102), the guardrail middle horizontal pipe (202) and the guardrail lower horizontal pipe (302) are all made of square non-wrought steel pipes, and the guardrail upper horizontal pipe (102), the guardrail middle horizontal pipe (202) and the guardrail lower horizontal pipe (302) are equidistantly arranged.

8. A ratchet lock convenient stabilizing guardrail according to claim 7, characterized in that: The right (500) and left (600) rotating force arm assemblies are made of high-strength stainless steel plates.

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