Pin key type supporting frame

Abstract

The pin key type supporting frame comprises an upper disc body, a lower disc body, a plurality of pin shaft sleeve assemblies and a driving piece, the upper disc body is arranged on a stand column in a sliding and sleeving mode, the upper disc body is located above a disc, and a plurality of pin shafts are arranged at the positions, corresponding to hole channels, of the bottom face; the lower disc body is slidably arranged on the stand column in a sleeving mode and located below the disc, a plurality of pin holes are formed in the positions, corresponding to the hole channels, of the top face, and a plurality of channels are formed in the side face of each pin hole; the multiple pin shaft sleeve assemblies are correspondingly arranged in the pin holes, each pin shaft sleeve assembly comprises multiple L-shaped plates, the horizontal section of each L-shaped plate slides in the channel in the corresponding direction, and after the pin shaft is inserted into the pin shaft sleeve assemblies, the vertical sections of the multiple L-shaped plates expand outwards to be tightly attached to the hole channel, so that the fastening performance among the vertical sections, the pin shaft and the inner wall of the hole channel is improved; and meanwhile, the upper disc body and the lower disc body respectively keep the limiting and extruding effects on the pin shaft and the pin shaft sleeve assembly, so that the possibility that the tightness among the arc-shaped plate, the pin shaft and the inner wall of the hole channel is damaged by external factors is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of scaffolding equipment, in particular to a pin-key type supporting frame. Background Art

[0002] Pin-key type support frame is a scaffolding system widely used in construction projects. It has the characteristics of stable structure, safety and reliability, easy erection and disassembly. This type of scaffolding is usually composed of standardized rods, connecting plates, keyways, etc., connected by special pins or wedges to form a stable structure. Pin-key type scaffolding is suitable for various construction scenarios, such as wall construction, formwork support, etc.

[0003] When installing the existing pin-key type support frame, the wedge-shaped hole of the connecting head on the cross bar is aligned with the hole on the disc, and the wedge-shaped pin is inserted into the wedge-shaped hole and hammered down with a hammer to complete the connection between the cross bar and the vertical bar. However, after the support frame fixed by the wedge-shaped pin is hammered down, the pin is easy to loosen in the wedge-shaped hole because there is no subsequent continuous squeezing force on the pin, thereby affecting the stability of the support frame. Summary of the invention

[0004] The object of the present invention is to provide a pin-key type support frame, which can ensure the fastening effect of the hole and the pin shaft, thereby improving the stability of the support frame.

[0005] The technical solution of the present invention is:

[0006] A pin-key type support frame comprises: a column and a cross bar, the column is provided with a disc, both ends of the cross bar are provided with a connector, a plurality of channels are provided on the disc, the connector is two symmetrically arranged plates, and connecting holes are provided at the same position of the two plates, the support frame also comprises: an upper plate body, which is slidably sleeved on the column and located above the disc, a plurality of pins are provided on the bottom surface of the upper plate body at positions corresponding to the channels, and the pins can pass through the channels by sliding the upper plate body; a lower plate body, which is slidably sleeved on the column and located below the disc, a plurality of pins are provided on the top surface of the lower plate body at positions corresponding to the channels There are multiple pin holes, and multiple grooves are opened on the side of each pin hole, and the multiple grooves are arranged in a circular array; multiple pin shaft sleeve assemblies are correspondingly arranged in each pin hole, and each pin shaft sleeve assembly includes multiple L-shaped plates, and the horizontal section of each L-shaped plate slides in the groove in the corresponding direction. Through the sliding of the lower disk body, the ring formed by the vertical sections of the multiple L-shaped plates can pass through the channel, and the pin shaft is inserted into the ring so that the vertical sections of the multiple L-shaped plates fit the channel; a driving member, a manual driving member is provided above the upper disk body and below the lower disk body, which is used to drive the upper disk body and the lower disk body to approach each other.

[0007] Furthermore, a limit block is provided at the slot opening of the slot, and in order to prevent the horizontal section of the L-shaped plate from falling out of the slot, a barb structure is provided at one end of the horizontal section located inside the slot.

[0008] Furthermore, in order to make the structure formed by the vertical sections of multiple L-shaped plates better match the structure of the pin shaft, the vertical section of each of the L-shaped plates is an arc-shaped plate, and a rubber layer is provided on the inner and outer arc surfaces of the arc-shaped plate. The rubber layer can increase the friction between the arc-shaped plate and the channel when the pin shaft is inserted into the ring formed by the vertical sections, and at the same time, the extrusion deformation of the rubber layer can prevent the formation of a gap between the arc-shaped plate and the channel.

[0009] Furthermore, the front end of the pin is provided with a chamfer, and the inner side of the top end of the vertical section of the L-shaped plate is provided with an inclined surface matching the chamfer of the front end of the pin. Through such a design, the pin can be inserted more smoothly between the vertical sections of the L-shaped plate.

[0010] Furthermore, the driving member includes: an L-shaped spreading arm, including: a vertically arranged horizontal support section and a vertical support section; a driving part, including: a disc, a disc body is provided with two limiting holes, and a hole groove is opened in the center of the disc body; an insertion rod, inserted in the hole groove, and a limiting plate is provided at one end, and the insertion rod is connected to the horizontal support section; a limiting pin, one end of which is connected to the limiting plate, and the other end is perpendicular to the disc, and is used to be inserted into the limiting hole.

[0011] Furthermore, the two limiting holes correspond to the 0° and 90° angles of the disk respectively.

[0012] Furthermore, when the driving member is in use, the connecting hole of the crossbar connecting head is aligned with the hole on the disc, and the driving member under the lower disc body is driven first. Through the rotation of the L-shaped support arm, the horizontal support section that supports the lower disc body is lifted upward until the horizontal support section is vertical and the vertical support section is horizontal. At this time, the pin sleeve assembly enters the hole and the upper disc body is naturally lowered so that the pin shaft is located above the pin sleeve assembly. At this time, the driving member above the upper disc body is driven to make the horizontal support section vertical and the vertical support section horizontal, squeeze the pin shaft into between the arc plates of the pin sleeve assembly, and expand the L-shaped plate to play a tightening role.

[0013] When rotating the rear plug rod, first pull the plug rod out a distance so that the limit pin can be pulled out from the 90° limit hole. After the plug rod is rotated 90°, insert the plug rod back so that the limit pin can be inserted into the limit hole at the 0° position to complete the state locking and fixation of the L-shaped support arm.

[0014] Furthermore, a protruding block is provided on the side surface of the horizontal supporting section, and an edge of the protruding block on one side close to the vertical supporting section is configured as an arc-shaped surface.

[0015] Furthermore, in order to facilitate the separate control of the installation of cross bars in different directions, the upper disk body is a spliced ​​structure, including multiple sliders, each slider is equipped with a pin shaft at the bottom, and the lower disk body is a spliced ​​structure, including multiple sliders, each slider is equipped with a pin hole and pin shaft sleeve assembly at the top, and the slider slides on the column through a slide groove.

[0016] Furthermore, each slider is configured with a driving member, which drives the slider at the corresponding position to slide, thereby completing the installation of cross bars in multiple directions in sequence.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention engages the pin shaft with the pin shaft sleeve assembly in the channel by buckling the upper disk body and the lower disk body, and after the thicker pin shaft is inserted into the pin shaft sleeve assembly, the arc plate of the pin shaft sleeve assembly expands, so that the arc plate, the pin shaft and the inner wall of the channel are tightly connected, and the generation of gaps between the arc plate, the pin shaft and the inner wall of the channel is avoided, thereby improving the tightness between the arc plate, the pin shaft and the inner wall of the channel, and continuously giving the upper and lower disk bodies extrusion force through the corresponding driving parts of the upper and lower disk bodies, so that the upper disk body and the lower disk body respectively maintain the limiting extrusion effect on the pin shaft and the pin shaft sleeve assembly, thereby reducing the possibility that the tightness between the arc plate, the pin shaft and the inner wall of the channel is destroyed by external factors.

[0019] 2. The driving member of the present invention is composed of an L-shaped support arm and a driving part of an insertion rod structure. The L-shaped support arm is rotated by rotating the insertion rod, so that the horizontal support section is vertical and the vertical support section is horizontal, thereby providing driving force to the upper and lower disks. The operation is very convenient. Compared with the method of hitting the wedge-shaped latch with a hammer, it is more labor-saving and can avoid the vibration caused by knocking, which may cause the wedge-shaped latch at other positions on the support frame to loosen.

[0020] 3. The upper disk and the lower disk of the present invention are both spliced ​​structures, and each spliced ​​part is a slider that slides on the column and is driven by a separate driving member, so that the cross bars in different directions can be installed and adjusted more conveniently on the disc of the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of Example 1 of the present invention.

[0022] Figure 2 It is a top view of the upper plate structure schematic diagram.

[0023] Figure 3 It is a top view of the schematic diagram of the lower plate structure.

[0024] Figure 4 for Figure 1 An enlarged view of the structural schematic diagram of the middle A area.

[0025] Figure 5 It is a schematic diagram of the front view structure of the driving member of the present invention on the column.

[0026] Figure 6 This is a schematic diagram of the main structure of Example 2 of the present invention.

[0027] Figure 7 for Figure 6 An enlarged view of the schematic diagram of the structure of the middle B area.

[0028] Among them, 1. column, 11. slide groove, 2. disc, 21. channel, 3. upper disc body, 4. pin shaft, 5. lower disc body, 51. pin hole, 52. channel, 53. limit block, 6. pin shaft sleeve assembly, 61. L-shaped plate, 62. horizontal section, 7. L-shaped expansion arm, 8. driving part, 81. disc, 82. insertion rod, 83. limit hole, 84. limit pin, 85. handle, 9. slider. DETAILED DESCRIPTION

[0029] Combine the following Figures 1 to 7 , the specific embodiments of the present invention are described in detail. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] Example 1

[0032] like Figure 1 As shown, a pin-key type support frame includes: a column 1 and a crossbar, a disc 2 is arranged on the column 1, and connectors are arranged at both ends of the crossbar. A plurality of holes 21 are provided on the disc 2. The connector is two symmetrically arranged plates, and connecting holes are provided at the same position of the two plates. The connecting holes are aligned with the holes 21 on the disc 2, as shown in FIG. Figure 1 As shown, the support frame also includes: an upper plate body 3, a lower plate body 5, a plurality of pin sleeve assemblies 6 and a driving member, such as Figure 1 and Figure 2As shown, the upper plate body 3 is disc-shaped, with a circular hole at the center, and is sleeved on the column 1 through the circular hole and slides on the column 1. The upper plate body 3 is located above the disc 2, and a plurality of pins 4 are provided at positions corresponding to the holes 21 on the bottom surface of the upper plate body 3, and the pins 4 at the bottom of the upper plate body 3 can pass through the corresponding holes 21 by sliding the upper plate body 3 downward; the lower plate body 5 has a circular hole at the center, and is sleeved on the column 1 through the circular hole and slides on the column 1, and the lower plate body 5 is located below the disc 2, as shown in FIG. Figure 3 and Figure 4 As shown, a plurality of pin holes 51 are provided on the top surface of the lower plate 5 at positions corresponding to the holes 21, and a plurality of grooves 52 are provided on the side of each pin hole 51, and the plurality of grooves 52 are arranged in a circular array; Figure 1 and Figure 4 As shown, multiple pin sleeve assemblies 6 are correspondingly arranged in each pin hole 21, and each pin sleeve assembly 6 includes multiple L-shaped plates 61. The horizontal section 62 of each L-shaped plate 61 slides in the groove 52 in the corresponding direction. Through the sliding of the lower disk body 5, the ring formed by the vertical sections of the multiple L-shaped plates 61 can pass through the channel 21, and the pin shaft 4 is inserted into the ring so that the vertical sections of the multiple L-shaped plates 61 expand outward to fit tightly into the channel 21, and the horizontal sections slide toward the inside of the groove 52 to ensure the stability of the expansion of the L-shaped plates 61. Drive members are provided above the upper disk body 3 and below the lower disk body 5, which are used to drive the upper disk body 3 and the lower disk body 5 to approach each other and provide continuous extrusion force, thereby reducing the possibility of the tightness between the arc plate, the pin shaft 4 and the inner wall of the channel 21 being destroyed by external factors.

[0033] like Figure 4 As shown, in order to prevent the horizontal section of the L-shaped plate 61 from escaping from the groove 52 , a limit block 53 is provided at the groove opening of the groove 52 , and a barb structure is provided at one end of the horizontal section located inside the groove 52 .

[0034] In some embodiments, in order to make the structure formed by the vertical sections of the plurality of L-shaped plates 61 better match the structure of the pin 4, as shown in FIG. Figure 3 As shown, the vertical sections of each L-shaped plate 61 are arc-shaped plates, and a rubber layer is provided on the inner and outer arc surfaces of the arc-shaped plates. The rubber layer can increase the friction between the arc-shaped plate and the channel 21 when the pin shaft 4 is inserted into the ring surrounded by the vertical sections. At the same time, the extrusion deformation of the rubber layer can prevent the formation of a gap between the arc-shaped plate and the channel 21.

[0035] like Figure 1 As shown, the front end of the pin 4 is provided with a chamfer, and the inner side of the top end of the vertical section of the L-shaped plate 61 is provided with an inclined surface matching the chamfer of the front end of the pin 4. Through such a design, the pin 4 can be inserted more smoothly between the vertical sections of the L-shaped plate 61.

[0036] like Figure 5As shown, the driving member includes: an L-shaped spreading arm 7 and a driving part 8. The L-shaped spreading arm 7 includes: a horizontal support section and a vertical support section arranged vertically. A connecting angle plate is provided between the horizontal support section and the vertical support section to improve the stability of the connection. The driving part 8 includes: a disk 81, an insert rod 82, a limiting hole 83 and a limiting latch 84. The disk 81 has two limiting holes 83 on its body, and a hole groove is provided in the center of the disk body; the insert rod 82 is inserted in the hole groove, and a limiting plate is provided at one end, and the insert rod 82 is connected to the horizontal support section; one end of the limiting latch 84 is connected to the limiting plate, and the other end is perpendicular to the disk 81 and is used to be inserted into the limiting hole 83.

[0037] Specifically, the two limiting holes correspond to the 0° and 90° angles of the disc 81. A protrusion is provided on the side of the horizontal support section for contacting the upper disc body 3 and the lower disc body 5 respectively, and the edge of the protrusion close to the vertical support section is configured as an arc surface.

[0038] When using, Figure 5 As shown, align the connecting hole of the crossbar connector with the channel 21 on the disc 2, first drive the driving member below the lower disc body 5, and through the rotation of the L-shaped support arm 7, lift the horizontal support section that supports the lower disc body 5 upward until the horizontal support section is vertical and the vertical support section is horizontal. At this time, the pin sleeve assembly 6 enters the channel 21, and the upper disc body 3 is naturally lowered so that the pin shaft 4 is located above the pin sleeve assembly 6. At this time, drive the driving member above the upper disc body 3 to make the horizontal support section vertical and the vertical support section horizontal, squeeze the pin shaft 4 into between the arc plates of the pin sleeve assembly 6, and expand the L-shaped plate to play a tightening role.

[0039] It is worth mentioning that when the rear plug rod 82 is rotated, the plug rod 82 needs to be pulled out a certain distance first so that the limit pin 84 can be pulled out from the 90° limit hole 83. After the plug rod 82 is rotated 90°, the plug rod 82 is inserted back so that the limit pin 84 is inserted into the limit hole 83 at the 0° position, thereby completing the state locking and fixing of the L-shaped support arm 7.

[0040] Example 2

[0041] In the above embodiment, when the driving member is driving, it is necessary to drive the entire upper plate 3 or the lower plate 5 at once, so it is not easy to realize the installation of the cross bar in more directions.

[0042] In order to facilitate the individual control of the crossbar installation in different directions, such as Figure 6 As shown, the upper disk body 3 is installed as a splicing structure, which includes a plurality of sliders 9, and a pin shaft 4 is provided at the bottom of each slider 9. The lower disk body 5 is a splicing structure, which includes a plurality of sliders 9, and a pin hole 51 and a pin shaft sleeve assembly 6 are provided at the top of each slider 9. The slider 9 slides on the column 1 through the slide groove 11.

[0043] Specifically, each slider 9 is equipped with a driving member. The use of the driving member is the same as the method in Example 2, and the sliding blocks 9 at corresponding positions are driven to slide, thereby completing the installation of the cross bars in multiple directions in sequence.

[0044] The above disclosures are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A pin-key type support frame, include: A column (1) and a crossbar, wherein the column (1) is provided with a disc (2), and both ends of the crossbar are provided with connectors, characterized in that a plurality of holes (21) are provided on the disc (2), and the connector is two symmetrically arranged plates, and connection holes are provided at the same position of the two plates, and the support frame further comprises: An upper plate body (3) is slidably sleeved on the column (1) and is located above the disc (2). A plurality of pins (4) are provided at positions corresponding to the holes (21) on the bottom surface of the upper plate body (3), and the pins (4) can pass through the holes (21) through the sliding of the upper plate body (3); A lower plate body (5) is slidably sleeved on the upright column (1) and is located below the disc (2); a plurality of pin holes (51) are provided on the top surface of the lower plate body (5) at positions corresponding to the holes (21); a plurality of grooves (52) are provided on the side surface of each of the pin holes (51); and the plurality of grooves (52) are arranged in a ring array; A plurality of pin sleeve assemblies (6) are correspondingly arranged in each pin hole (21), each of the pin sleeve assemblies (6) comprises a plurality of L-shaped plates (61), a horizontal section (62) of each of the L-shaped plates (61) slides in a groove (52) in a corresponding direction, and through the sliding of the lower plate (5), a ring formed by the vertical sections of the plurality of L-shaped plates (61) can pass through the hole (21), and the pin shaft (4) is inserted into the ring so that the vertical sections of the plurality of L-shaped plates (61) fit the hole (21); A driving member is provided above the upper plate (3) and below the lower plate (5), and is used to drive the upper plate (3) and the lower plate (5) to move closer to each other and provide a continuous squeezing force.

2. A pin-key type support frame according to claim 1, It is characterized in that A limiting block (53) is provided at the notch position of the groove (52).

3. A pin-key type support frame according to claim 1, It is characterized in that The vertical section of each L-shaped plate (61) is an arc-shaped plate, and a rubber layer is provided on the inner arc surface and the outer arc surface of the arc-shaped plate.

4. A pin-key type support frame according to claim 1, It is characterized in that The front end of the pin shaft (4) is provided with a chamfer, and the inner side of the top end of the vertical section of the L-shaped plate (61) is provided with an inclined surface matching the chamfer of the front end of the pin shaft (4).

5. A pin-key type support frame according to claim 1, It is characterized in that The driving member comprises: The L-shaped spreading arm (7) comprises: a horizontal supporting section and a vertical supporting section arranged vertically; The driving part (8) comprises: a disk (81) having two limiting holes (83) on the disk body and a hole groove at the center of the disk body; an insertion rod (82) inserted in the hole groove and having a limiting plate at one end, the insertion rod (82) being connected to the horizontal support section; and a limiting latch (84) having one end connected to the limiting plate and the other end perpendicular to the disk (81) and used for being inserted into the limiting hole (83).

6. A pin-key type support frame according to claim 5, It is characterized in that The two limiting holes correspond to the 0° and 90° angles of the disc (81) respectively.

7. A pin-key type support frame according to claim 5, It is characterized in that A convex block is provided on the side surface of the horizontal support section, and an edge of the convex block on one side close to the vertical support section is configured as an arc surface.

8. A pin-key type support frame according to claim 1, It is characterized in that The upper disk body (3) is a spliced ​​structure, including a plurality of sliders (9), each slider (9) is equipped with a pin shaft (4) at the bottom, and the lower disk body (5) is a spliced ​​structure, including a plurality of sliders (9), each slider (9) is equipped with a pin hole (51) and a pin shaft sleeve assembly (6) at the top, and the slider (9) slides on the column (1) through a slide groove (11).

9. A pin-key type support frame according to claim 8, It is characterized in that Each slider (9) is equipped with a drive member.

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