CN113636432A - Bottom-support type low-shaft household elevator upper beam - Google Patents

Abstract

The invention discloses a bottom-support type low-hoistway household elevator upper beam which comprises a wheel set module, wherein the wheel set module comprises a pulley, a support frame, a connecting plate, butt joint bottom blocks and a first connecting piece, the pulley is fixed on one side of the connecting plate through the support frame, the butt joint bottom blocks are arranged on the other side of the connecting plate in pairs, the first connecting piece is arranged at the end part of each butt joint bottom block, and a clearance groove is reserved between the two butt joint bottom blocks; the wheel set module comprises an upper beam main body, a second connecting piece and an anti-falling piece, wherein butt joint grooves are formed in the upper beam main body in pairs, the second connecting piece is arranged in the butt joint grooves, the butt joint bottom block is inserted into the butt joint grooves, the second connecting piece is connected with the first connecting piece, and the upper beam module is connected with a car.

Description

Bottom-support type low-shaft household elevator upper beam

Technical Field

The invention relates to the technical field of elevators, in particular to a bottom-support type low-hoistway household elevator upper beam.

Background

Along with the acceleration of city rhythm and the continuous improvement of people's living standard, the home elevator has become a demand of modern exquisite high-end life style, the existing home elevator includes the car, the car sets up in the elevator well, still there is a dragging device used for driving the lift car to go up and down in the elevator well, drag and draw the wheel to connect with rotatably on the device, there is a roof beam on the car, there are car roof wheels above the wheel group on the roof beam, the car roof wheel group includes car roof wheel and link, car roof wheel and link rotate to connect and the link passes the bolt fastening with the roof beam, the wire rope used for lifting the car winds around the wheel group of car roof, and then wind around dragging and drawing on the wheel; the dragging wheel rotates to drive the steel wire rope for lifting the lift car to move and the top wheel to rotate, so that the lift car is driven to lift.

The above prior art solutions have the following drawbacks: the existing upper beam of the lift car and the wheel set of the top of the lift car are fixed through a plurality of bolts, and an operator needs to repeatedly perform the action of screwing the bolts for many times in the lift well, so that the defect of inconvenient operation exists.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and in this section as well as in the abstract and the title of the invention of this application some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made keeping in mind the above problems occurring in the prior art and/or the problems occurring in the prior art.

Therefore, the technical problems to be solved by the invention are that the existing bolt fixing mode is inconvenient to operate, the workload of workers is increased, and the efficiency is influenced.

In order to solve the technical problems, the invention provides the following technical scheme: a bottom-support type low-hoistway household elevator upper beam comprises a wheel set module, wherein the wheel set module comprises a pulley, a support frame, a connecting plate, butt joint bottom blocks and a first connecting piece, the pulley is fixed on one side of the connecting plate through the support frame, the butt joint bottom blocks are arranged on the other side of the connecting plate in pairs, the first connecting piece is arranged at the end parts of the butt joint bottom blocks, and a spacing groove is reserved between the two butt joint bottom blocks;

the upper beam module comprises an upper beam main body, a second connecting piece and an anti-falling piece, wherein the upper beam main body is provided with a butt joint groove in pairs, the second connecting piece is arranged in the butt joint groove, the butt joint bottom block is inserted into the butt joint groove, the second connecting piece is connected with the first connecting piece, and the upper beam module is connected with the car.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: the butt joint bottom block is characterized in that a first containing groove and a first arc groove are inwards arranged at the end part of the butt joint bottom block, the first containing groove is communicated with the first arc groove, a first external contact ring is outwards arranged at the end part of the butt joint bottom block, a second arc groove is arranged on the first external contact ring, and the second arc groove is in butt joint with the first arc groove.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: a first semicircular groove is formed in one side of the first accommodating groove and communicated with the intermediate groove;

and a second semicircular groove is formed in the other side of the first accommodating groove, and the first semicircular groove is communicated with the first arc groove through a transition groove.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: the first connecting piece comprises a first semicircular block, a second semicircular block and a transition block, and the first semicircular block and the second semicircular block are connected through the transition block;

the first end surface of the first semicircular block is perpendicular to the second end surface of the second semicircular block.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: the first semicircular block is embedded in the first arc groove, the second semicircular block is embedded in the second semicircular groove, and the transition block is located in the transition groove.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: the butt joint tank is characterized in that a second accommodating groove and a third arc groove are formed in the bottom of the butt joint tank, the second accommodating groove is communicated with the third arc groove, a second external contact ring is arranged in the butt joint tank, a fourth arc groove is formed in the second external contact ring, and the third arc groove is in butt joint with the fourth arc groove.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: the second containing groove is provided with a third semicircular groove on one side, a fourth semicircular groove on the other side, and a through groove is further formed in the upper beam main body and is arranged between the two butt-joint grooves and communicated with the third semicircular groove.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: the second connecting piece comprises a third semicircular block, a fourth semicircular block and an end shaft, the fourth semicircular block and the end shaft are respectively arranged at two sides of the third semicircular block, and a third end surface of the third semicircular block is vertical to a fourth end surface of the fourth semicircular block;

the third semicircular block is embedded in the third arc groove, the fourth semicircular block is embedded in the fourth semicircular groove, and the end shaft is located in the third semicircular groove.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: the end part of the end shaft is provided with an insertion groove, and a screwing strip is arranged at the end part of the insertion groove;

the through groove is internally provided with a limiting part, the limiting part comprises a contact plate and an inserting shaft, and a precession groove is formed in the end portion of the inserting shaft.

As a preferable scheme of the bottom-supported low-shaft home elevator upper beam, the invention comprises the following steps: the upper beam main body is also provided with a vertical groove which is communicated with the through groove through a bottom groove;

the anticreep piece includes riser and bottom plate, the riser set up in erect in the groove, riser one side through the spring with erect the groove lateral wall and connect, the bottom plate set up in the kerve.

The invention has the beneficial effects that: the wheel set module can be quickly installed with the upper beam main body, is convenient and quick, and can be detached when necessary.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is a schematic diagram showing a separated structure of a wheel set module and an upper beam module in an upper beam of a bottom-supported low-hoistway home elevator according to an embodiment of the invention;

fig. 2 is a schematic structural view of a connecting plate and a butt-joint bottom block in an upper beam of a bottom-supported low-hoistway home elevator according to an embodiment of the invention;

fig. 3 is a schematic structural view showing a first arc groove and a second arc groove in an upper beam of a bottom-supported low-hoistway home elevator according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a first connecting member in an upper beam of a bottom-support type low-hoistway home elevator according to an embodiment of the invention;

fig. 5 is a schematic diagram of an overall explosion structure of an upper beam of a bottom-support type low-hoistway home elevator according to an embodiment of the invention;

fig. 6 is a schematic view showing an internal structure of a docking slot in an upper beam of a bottom-supported low-hoistway home elevator according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a display control member in an upper beam of a bottom-supported low-hoistway home elevator according to an embodiment of the present invention;

fig. 8 is a schematic structural view showing a second connecting member and a stopper in an upper beam of a bottom-supported low-hoistway home elevator according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a push groove shown in an upper beam of a bottom-support type low-hoistway home elevator according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially according to the general scale for convenience of illustration when describing the embodiments of the present invention, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 5, the embodiment provides a bottom-supported low-hoistway home use elevator upper beam, which includes a wheel set module 100, wherein the wheel set module 100 includes a pulley 101, a support frame 102, a connecting plate 103, a butt joint bottom block 104 and a first connecting piece 105, the pulley 101 is fixed on one side of the connecting plate 103 through the support frame 102, the butt joint bottom block 104 is arranged on the other side of the connecting plate 103 in pair, the first connecting piece 105 is arranged at the end of the butt joint bottom block 104, and a gap 106 is left between the two butt joint bottom blocks 104.

The upper beam module 200, the upper beam module 200 includes an upper beam main body 201, a second connecting member 202 and an anti-dropping member 203, the upper beam main body 201 is provided with a pair of butt-joint grooves 204, the second connecting member 202 is arranged in the butt-joint grooves 204, the butt-joint bottom block 104 is inserted in the butt-joint grooves 204, the second connecting member 202 is connected with the first connecting member 105, and the upper beam module 200 is connected with the car.

In this embodiment, the wheel set module 100 can be integrally connected and fixed to the upper beam body 201 by disposing the docking bottom block 104 in the docking slot 204 and engaging the first connecting member 105 with the second connecting member 202.

Specifically, a first accommodating groove 104a and a first arc groove 104b are formed inwards at the end of the butt joint bottom block 104, the first accommodating groove 104a is communicated with the first arc groove 104b, a first outer contact ring 104c is formed outwards at the end of the butt joint bottom block 104, a second arc groove 104d is formed in the first outer contact ring 104c, and the second arc groove 104d is in butt joint with the first arc groove 104 b.

It should be noted that the first arc-shaped groove 104b and the second arc-shaped groove 104d are both a quarter arc, and the radii of the two arc-shaped grooves are equal, and the two arc-shaped grooves are combined into a semicircular groove, and preferably, the first accommodating groove 104a is a square groove.

A first semicircular groove 104e is formed in one side of the first accommodating groove 104a, and the first semicircular groove 104e is communicated with the intermediate groove 106; the other side of the first receiving groove 104a is provided with a second semicircular groove 104f, and the first semicircular groove 104e is communicated with the first arc groove 104b through a transition groove 104 g.

It should be noted that the first combined semicircular groove C formed by the first arc groove 104b and the second arc groove 104D together does not completely correspond to the first semicircular groove 104e, specifically, the first semicircular groove 104e and the first combined semicircular groove C are vertically arranged, that is, on the projection in the direction D shown in the figure, the two are combined to form a 270 ° central angle.

Specifically, the first receiving groove 104a provides a 90 ° central angle space, and forms a 270 ° central angle groove structure together with the first combined semicircular groove C.

It should be noted that the first semicircular groove 104e, the second semicircular groove 104f and the first arc groove 104b are coaxially disposed, and preferably, the transition groove 104g is a semicircular groove.

The first connecting piece 105 comprises a first semicircular block 105a, a second semicircular block 105b and a transition block 105c, and the first semicircular block 105a and the second semicircular block 105b are connected through the transition block 105 c;

the first end surface a of the first semicircular block 105a is perpendicular to the second end surface B of the second semicircular block 105B.

It should be noted that the first semicircular block 105a and the second semicircular block 105B are coaxially arranged, and the first semicircular block 105a and the second semicircular block 105B are arranged in a staggered manner, specifically, the first semicircular block and the second semicircular block are arranged vertically, preferably, the transition block 105c is a semicircular block, and the end surface of the semicircular block is flush with the second end surface B of the second semicircular block 105B.

The first semicircular block 105a is embedded in the first arc groove 104b, the second semicircular block 105b is embedded in the second semicircular groove 104f, and the transition block 105c is located in the transition groove 104 g.

In this configuration, the first link 105 can rotate along its axis, and the first link 105 will not fall off the mating bottom block 104. Specifically, when the first connecting member 105 rotates, because the first semicircular groove 104e and the first combined semicircular groove C are vertically arranged, the left gap is only 90 °, the first semicircular block 105a and the second semicircular block 105b are both semicircular blocks of 180 °, and the first semicircular block 105a and the second semicircular block 105b are also perpendicular to each other, that is, the first connecting member 105 does not have a certain position so that the first connecting member 105 falls off from the gap of 90 °.

Example 2

Referring to fig. 1 to 7, the difference between the present embodiment and the previous embodiment is that a second receiving groove 204a and a third arc groove 204b are disposed at the bottom of the docking groove 204, the second receiving groove 204a communicates with the third arc groove 204b, a second external contact ring 204c is disposed in the docking groove 204, a fourth arc groove 204d is disposed in the second external contact ring 204c, and the third arc groove 204b is docked with the fourth arc groove 204 d.

A third semicircular groove 204e is formed in one side of the second accommodating groove 204a, a fourth semicircular groove 204f is formed in the other side of the second accommodating groove 204a, a through groove 205 is further formed in the upper beam main body 201, the through groove 205 is formed between the two abutting grooves 204, and the through groove 205 is communicated with the third semicircular groove 204 e.

It should be noted that the third arc groove 204b and the fourth arc groove 204d are both quarter arc grooves, and the radii of the third arc groove 204b and the fourth arc groove 204d are equal, and the third arc groove 204b and the fourth arc groove 204d are combined into the second combined semicircular groove E.

The second combined semicircular groove E is perpendicular to the third semicircular groove 204E, and the front projection thereof covers a 270-degree central angle, and specifically, the second accommodating groove 204a provides a space with a 90-degree central angle and combines with the second combined semicircular groove E to form a 270-degree groove structure.

The second connector 202 comprises a third semicircular block 202a, a fourth semicircular block 202b and an end shaft 202c, the fourth semicircular block 202b and the end shaft 202c are respectively arranged at two sides of the third semicircular block 202a, and a third end surface F of the third semicircular block 202a is perpendicular to a fourth end surface G of the fourth semicircular block 202 b; the third semicircular block 202a is embedded in the third arc groove 204b, the fourth semicircular block 202b is embedded in the fourth semicircular groove 204f, and the end shaft 202c is located in the third semicircular groove 204 e.

It should be noted that the overall structure of the second connecting member 202 is substantially the same as that of the first connecting member 105, the size of the third semicircular block 202a is the same as that of the first semicircular block 105a, the third end face F and the first end face a are correspondingly contacted to form a complete cylindrical structure, the size of the fourth semicircular block 202B is the same as that of the second semicircular block 105B, and the fourth end face G and the second end face B are butted to form a complete cylindrical structure.

It should be noted that the fourth semicircular block 202b and the second semicircular block 105b both function as an auxiliary limiting function, specifically, the first semicircular block 105a is limited at the first arc groove 104b, the third semicircular block 202a is limited at the third arc groove 204b, so that the first connecting member 105 and the second connecting member 202 can rotate along the respective central lines, but cannot fall off, and it should be noted that under the action of friction, the first connecting member 105 and the second connecting member 202 cannot rotate freely.

It should be noted that the end shaft 202c is provided with a connecting block 202c-3 and a push plate 202c-4, and the push plate 202c-4 is connected with the end shaft 202c through the connecting block 202 c-3; the side wall of the third semicircular groove 204e is provided with a push groove 204e-1, the push groove 204e-1 is communicated with the third semicircular groove 204e through a connecting groove 204e-2, a connecting block 202c-3 is arranged in the connecting groove 204e-2, a push plate 202c-4 is arranged in the push groove 204e-1, and the push plate 202c-4 is connected with the side wall of the push groove 204e-1 through a spring. It should be noted that the push groove 204e-1 and the connection groove 204e-2 are both arc-shaped.

In the initial state, the spring keeps the push plate 202c-4 in a position, i.e. the initial position of the second connector 202 when no external force is applied, in which the third end surface F of the third semicircular block 202a faces into the docking slot 204 and forms an angle, preferably, the angle is shown in fig. 7, and the third end surface F forms an angle of 45 ° with the bottom surface of the docking slot 204.

Specifically, the assembly process of the wheelset module 100 to the upper beam body 201 includes aligning the butt-joint bottom block 104 with the butt-joint groove 204, adjusting the position of the first semicircular block 105a at the first arc groove 104b to enable the first end surface a to face the end surface of the butt-joint bottom block 104, and inserting the butt-joint bottom block 104 into the butt-joint groove 204.

It should be noted that the docking bay 204 is sized and positioned to correspond with the docking shoe 104.

At this time, the first receiving groove 104a corresponds to the second outer contact ring 204c, the first outer contact ring 104c corresponds to the second receiving groove 204a, during the mutual insertion process, the second outer contact ring 204c will contact the first end surface a and push the first connecting member 105 to rotate, the connection push plate spring generates deformation, the first outer contact ring 104c contacts the third end surface F to rotate the second connecting member 202 until the end surface of the butt-joint bottom block 104 contacts the bottom surface of the butt-joint groove 204, at this time, the second outer contact ring 204c is located in the first receiving groove 104a, the first outer contact ring 104c is located in the second receiving groove 204a, the first arc groove 104b, the second arc groove 104d, the third arc groove 204b and the fourth arc groove 204d are combined together to form a complete circular groove structure, at this time, under the return acting force of the spring, the first connecting member 105 rotates to the initial position and drives the second connecting member 202 to rotate, so that part of the first semicircular block 105a enters the fourth arc groove 204d, part of the third semicircular block 202a enters the second arc groove 104d, at this time, when the third semicircular block is pulled by force, the first end face a tends to be horizontal, half of the first semicircular block 105a enters the fourth arc groove 204d and is more difficult to take out, and at this time, the force between the first semicircular block 105a and the third semicircular block 202a is borne by a whole circle formed by combining the first semicircular block 105a and the third semicircular block 202a, so that the clamping is realized.

Example 3

Referring to fig. 1 to 9, the present embodiment is different from the previous embodiment in that an end of an end shaft 202c is provided with an insertion groove 202c-1, and the insertion groove 202c-1 is provided with a screwing strip 202c-2 from the end; the through groove 205 is provided with a limiting member 206, the limiting member 206 includes a contact plate 206a and an insertion shaft 206b, and the insertion shaft 206b is provided with a screw-in groove 206c from the end.

The upper beam main body 201 is also provided with a vertical groove 207, and the vertical groove 207 is communicated with the through groove 205 through a bottom groove 208; the anti-slip piece 203 comprises a vertical plate 203a and a bottom plate 203b, wherein the vertical plate 203a is arranged in the vertical groove 207, one side of the vertical plate 203a is connected with the side wall of the vertical groove 207 through a spring 203c, and the bottom plate 203b is arranged in the bottom groove 208.

Preferably, if the first and third semicircular blocks 105a and 202a are freely rotated, there is a possibility that the first and third semicircular blocks 105a and 202a are rotated to the unlocking position, and thus it is preferable that the first and third semicircular blocks 105a and 202a are not freely rotated.

In the present embodiment, in order to prevent the first semicircular block 105a and the third semicircular block 202a from rotating freely, a limiting member 206 is provided; specifically, the screw-in strip 202c-2 and the screw-in groove 206c are configured such that during the insertion of the insertion shaft 206b into the insertion groove 202c-1, the screw-in strip 202c-2 enters the screw-in groove 206c, and when one is fixed, the other moves in the axial direction.

Therefore, in the present embodiment, during the engagement process, the vertical plate 203a is pulled to separate the bottom plate 203b from the position between the two contact plates 206a, and when the second external contact ring 204c rotates the first semicircular block 105a, since the bottom plate 203b is not located between the two contact plates 206a, the limiting member 206 will move along the axial direction thereof, specifically, the two contact plates 206a approach together to reduce the distance therebetween, and after the first semicircular block 105a returns to the original position, the two contact plates 206a move away from each other.

At this time, the vertical plate 203a is released, and the spring 203c pushes the vertical plate 203a to make the bottom plate 203b enter between the two contact plates 206a, so that the stopper 206 cannot move, and the rotation of the first semicircular block 105a is limited.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims (10)

1. The utility model provides a domestic elevator upper beam of low well of collet formula which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the wheel set module (100) comprises a pulley (101), a support frame (102), a connecting plate (103), butt joint bottom blocks (104) and first connecting pieces (105), wherein the pulley (101) is fixed on one side of the connecting plate (103) through the support frame (102), the butt joint bottom blocks (104) are arranged on the other side of the connecting plate (103) in pairs, the first connecting pieces (105) are arranged at the end parts of the butt joint bottom blocks (104), and a middle groove (106) is reserved between the two butt joint bottom blocks (104);

the upper beam module (200) comprises an upper beam main body (201), a second connecting piece (202) and an anti-falling piece (203), wherein the upper beam main body (201) is provided with a butt joint groove (204) in pair, the second connecting piece (202) is arranged in the butt joint groove (204), the butt joint bottom block (104) is inserted into the butt joint groove (204), the second connecting piece (202) is connected with the first connecting piece (105), and the upper beam module (200) is connected with a car.

2. The bottom-mounted low-hoistway home elevator upper beam of claim 1, characterized in that: the butt joint bottom block (104) is provided with a first containing groove (104a) and a first arc groove (104b) inwards at the end part, the first containing groove (104a) is communicated with the first arc groove (104b), a first outer contact ring (104c) is arranged outwards at the end part of the butt joint bottom block (104), a second arc groove (104d) is arranged on the first outer contact ring (104c), and the second arc groove (104d) is in butt joint with the first arc groove (104 b).

3. The bottom-mounted low-hoistway home elevator upper beam according to claim 1 or 2, characterized in that: a first semicircular groove (104e) is formed in one side of the first accommodating groove (104a), and the first semicircular groove (104e) is communicated with the intermediate groove (106);

the other side of the first accommodating groove (104a) is provided with a second semicircular groove (104f), and the first semicircular groove (104e) is communicated with the first arc groove (104b) through a transition groove (104 g).

4. The bottom-mounted low-hoistway home elevator upper beam of claim 3, wherein: the first connecting piece (105) comprises a first semicircular block (105a), a second semicircular block (105b) and a transition block (105c), and the first semicircular block (105a) and the second semicircular block (105b) are connected through the transition block (105 c);

the first end face (A) of the first semicircular block (105a) is perpendicular to the second end face (B) of the second semicircular block (105B).

5. The bottom-mounted low-hoistway home elevator upper beam of claim 4, wherein: the first semicircular block (105a) is embedded at the first arc groove (104b), the second semicircular block (105b) is embedded in the second semicircular groove (104f), and the transition block (105c) is positioned in the transition groove (104 g).

6. The bottom-mounted low-hoistway home elevator upper beam of claim 5, wherein: the butt joint groove (204) bottom is provided with second storage tank (204a) and third arc groove (204b), second storage tank (204a) and third arc groove (204b) communicate with each other, be provided with second outer contact ring (204c) in butt joint groove (204), be provided with fourth arc groove (204d) in second outer contact ring (204c), third arc groove (204b) and fourth arc groove (204d) butt joint.

7. The bottom-supported low-hoistway home elevator upper beam as claimed in any one of claims 4 to 6, characterized in that: second storage tank (204a) one side is provided with third half slot (204e), second storage tank (204a) opposite side is provided with fourth half slot (204f), still be provided with logical groove (205) on upper beam main part (201), it sets up between two butt joint grooves (204) to lead to groove (205), lead to groove (205) with third half slot (204e) communicate with each other.

8. The bottom-mounted low-hoistway home elevator upper beam of claim 7, wherein: the second connecting piece (202) comprises a third semicircular block (202a), a fourth semicircular block (202b) and an end shaft (202c), the fourth semicircular block (202b) and the end shaft (202c) are respectively arranged at two sides of the third semicircular block (202a), and a third end surface (F) of the third semicircular block (202a) is perpendicular to a fourth end surface (G) of the fourth semicircular block (202 b);

the third semicircular block (202a) is embedded in the third arc groove (204b), the fourth semicircular block (202b) is embedded in the fourth semicircular groove (204f), and the end shaft (202c) is located in the third semicircular groove (204 e).

9. The bottom-mounted low-hoistway home elevator upper beam of claim 8, wherein: an insertion groove (202c-1) is formed in the end portion of the end shaft (202c), and a screwing-in strip (202c-2) is arranged at the end portion of the insertion groove (202 c-1);

a limiting piece (206) is arranged in the through groove (205), the limiting piece (206) comprises a contact plate (206a) and an insertion shaft (206b), and a screwing-in groove (206c) is arranged on the insertion shaft (206b) from the end.

10. The bottom-mounted low-hoistway home elevator upper beam according to claim 8 or 9, characterized in that: the upper beam main body (201) is also provided with a vertical groove (207), and the vertical groove (207) is communicated with the through groove (205) through a bottom groove (208);

the anti-falling piece (203) comprises a vertical plate (203a) and a bottom plate (203b), the vertical plate (203a) is arranged in the vertical groove (207), one side of the vertical plate (203a) is connected with the side wall of the vertical groove (207) through a spring (203c), and the bottom plate (203b) is arranged in the bottom groove (208).

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