Lower sliding device of sliding door

Abstract

The utility model discloses a sliding door lower sliding device which comprises a double-rail slide way and a double-row pulley assembly matched with the double-rail slide way, and the double-row pulley assembly comprises a pulley supporting frame and double rows of pulleys installed on the pulley supporting frame. The lower sliding device of the sliding door further comprises a sliding way hanging steel channel used for hanging the double-rail sliding way on the ground and a pulley hanging steel channel used for hanging the double-row pulleys at the bottom of the sliding door, and the opening directions of the sliding way hanging steel channel and the pulley hanging steel channel are opposite and are arranged in parallel in an inserted and buckled mode. An upper leg of the slideway suspension channel steel is located between an upper leg and a lower leg of the pulley suspension channel steel, the double-track slideway is fixed on the lower surface of the upper leg of the slideway suspension channel steel, and the pulley support frame is fixed on the upper surface of the lower leg of the pulley suspension channel steel. The lower sliding device of the sliding door is good in sealing effect, sundries are not prone to entering in the using process, and the lower sliding device has the advantages of being rain-proof, wind-proof, sand-proof and the like.

Description

Technical Field

[0001] This utility model relates to a sliding device consisting of pulleys and tracks, and more particularly to a downward sliding device installed at the bottom of a sliding door. Background Technology

[0002] To ensure smooth opening and closing of sliding doors, a sliding mechanism consisting of pulleys and tracks needs to be installed on the top and / or bottom edges. Existing sliding mechanisms for the bottom edge of sliding doors lack protective structures, leaving the pulleys and tracks directly exposed. During use, debris can easily enter the tracks, affecting the door's operation. When this type of sliding mechanism is used for entryway sliding doors, rainwater can easily wet the pulleys and tracks during rain or snow, causing corrosion of the metal tracks and loss of lubrication, resulting in difficulty in sliding the door. Especially in sub-zero temperatures, water accumulation in the tracks can freeze, rendering the door unusable. Furthermore, when used for entryways to sunrooms, the aforementioned ordinary sliding mechanisms suffer from poor sealing and insulation. During sandstorms, windblown sand can enter the sunroom through the gaps between the pulleys and tracks, affecting its use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sliding door sliding device that addresses the above-mentioned shortcomings of ordinary sliding devices in the prior art. This sliding door sliding device has a good sealing effect, is not easy for debris to enter during use, and has the advantages of being rainproof, windproof, and sandproof.

[0004] The technical solution adopted to solve the technical problem is as follows: A sliding door sliding device includes a double-track slide and a double-row pulley assembly that cooperates with the double-track slide. The double-row pulley assembly includes a pulley support frame and double-row pulleys installed on the pulley support frame. The sliding door sliding device also includes a track suspension channel steel for suspending the double-track slide on the ground and a pulley suspension channel steel for suspending the double-row pulleys at the bottom of the sliding door. The opening directions of the track suspension channel steel and the pulley suspension channel steel are opposite and arranged in parallel interlocking. The upper leg of the track suspension channel steel is located between the upper and lower legs of the pulley suspension channel steel. The double-track slide is fixed to the lower surface of the upper leg of the track suspension channel steel, and the pulley support frame is fixed to the upper surface of the lower leg of the pulley suspension channel steel.

[0005] As a further improvement of this utility model: the pulley support frame is an inverted T-shaped pulley support frame.

[0006] As a further improvement of this utility model: the double-track slide is an integral double-track slide with a longitudinal central seam on the bottom surface.

[0007] As a further improvement of this utility model: the upper leg of the pulley suspension channel steel is also provided with a fixed stop for connecting the pulley suspension channel steel and the sliding door, the fixed stop being a vertical folded edge extending upward from the edge of the upper leg.

[0008] As a further improvement of this utility model: the pulley support frame is fixed to the lower leg of the pulley suspension channel steel by bolts, rivets or welding.

[0009] As a further improvement of this utility model: the integral double-track slide is fixed to the upper leg of the slide suspension channel steel by bolts, rivets or welding.

[0010] As a further improvement of this utility model: the integral double-track slide includes two symmetrically arranged planar tracks, and each track is provided with an anti-detachment guard edge near the longitudinal center seam. The anti-detachment guard edge is an oblique folded edge extending obliquely upward from the edge of the planar track.

[0011] As a further improvement of this utility model: the T-shaped pulley support frame is composed of two L-shaped angle steels connected back to back.

[0012] As a further improvement of this utility model: the distance between the lower surface of the upper leg of the pulley suspension channel steel and the upper surface of the upper leg of the slide rail suspension channel steel is less than 10mm.

[0013] As a further improvement of this utility model: the distance between the lower surface of the lower leg of the pulley suspension channel steel and the upper surface of the lower leg of the slide rail suspension channel steel is less than 10mm.

[0014] Beneficial Effects: The sliding door lower sliding device of this utility model, by employing the technical features of including a slide rail suspension channel steel that suspends a double track on the ground and a pulley suspension channel steel that suspends a double row of pulleys at the bottom of the sliding door, wherein the opening directions of the slide rail suspension channel steel and the pulley suspension channel steel are opposite and arranged in parallel interlocking, the upper leg of the slide rail suspension channel steel is located between the upper and lower legs of the pulley suspension channel steel, the double track is fixed to the bottom surface of the upper leg of the slide rail suspension channel steel, and the pulley support frame is fixed to the upper surface of the lower leg of the pulley suspension channel steel, suspends the double row of pulley assembly inside the protective structure formed by the slide rail suspension channel steel and the pulley suspension channel steel, therefore, during use, it is not easy for debris, rainwater, and sand to enter the double row of pulley assembly. The slide rail suspension channel steel and the pulley suspension channel steel interlock to form a maze-like structure, which can also improve the sealing effect of the sliding device, prevent air leakage, and improve the heat preservation effect. The adoption of an inverted T-shaped pulley support frame enhances the stability and balance of the pulleys. The use of an integral double-track slide with a longitudinal center seam on the bottom further improves its resistance to debris and water intrusion. The inclusion of a fixed edge on the upper leg of the pulley suspension channel steel for connecting the channel steel to the sliding door—a vertical folded edge extending upwards from the edge of the upper leg—makes the connection between the pulley suspension channel steel and the sliding door easier and more secure. The use of bolts, rivets, or welding to fix the pulley support frame to the lower leg of the pulley suspension channel steel, and bolts, rivets, or welding to fix the integral double-track slide to the upper leg of the slide suspension channel steel, simplifies the production and assembly of this sliding door sliding device while ensuring its performance and load-bearing capacity. Because the integrated double-track slide rail comprises two symmetrically arranged planar tracks, each track has an anti-derailment guard near the longitudinal center seam. This anti-derailment guard is a technical feature of an oblique folded edge extending diagonally upwards from the edge of the planar track, effectively preventing jamming and derailment during use, thus increasing reliability. The T-shaped pulley support frame, constructed from two L-shaped angle steels connected back-to-back, further facilitates the production of the pulley support frame. By rationally limiting the gaps between the lower surface of the upper leg of the pulley suspension channel steel and the upper surface of the upper leg of the slide rail suspension channel steel, as well as the gaps between the lower surface of the lower leg of the pulley suspension channel steel and the upper surface of the lower leg of the slide rail suspension channel steel, the smooth sliding of the sliding door is ensured while also improving the windproof, sandproof, debris-proof, and heat-insulating effects of this invention. Attached Figure Description

[0015] The sliding door sliding device of this utility model will be further described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is an exploded view of the sliding door lower sliding device of this utility model;

[0017] Figure 2 This is an enlarged cross-sectional view of the sliding device for a sliding door according to this utility model;

[0018] Figure 3 This is a perspective view of the sliding door sliding device of this utility model in use;

[0019] Figure 4 This is a perspective view of the sliding door lower sliding device of this utility model in the open state; Detailed Implementation

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, the sliding door lower sliding device of this utility model includes a double-track slide 2 and a double-row pulley assembly 3 that cooperates with the double-track slide. The double-row pulley assembly includes a pulley support frame 31 and multiple sets of double-row pulleys 32 mounted on the pulley support frame. The sliding door lower sliding device also includes a slide suspension channel steel 4 for suspending the double-track slide on the ground 6 and a pulley suspension channel steel 1 for suspending the double-row pulleys at the bottom of the sliding door 5. Figure 2 As shown, the opening directions of the slide rail suspension channel steel and the pulley suspension channel steel are opposite and arranged in parallel with interlocking buckles. The upper leg 41 of the slide rail suspension channel steel is located between the upper leg 11 and the lower leg 12 of the pulley suspension channel steel. The double rail slide is fixed to the bottom surface of the upper leg of the slide rail suspension channel steel, and the pulley support frame is fixed to the upper surface of the lower leg of the pulley suspension channel steel.

[0021] like Figure 2 As shown, the pulley support frame is an inverted T-shaped pulley support frame, which is composed of two L-shaped angle steels connected back to back. The two L-shaped angle steels are preferably fixed by bolts. The double-track slide is an integral double-track slide with a longitudinal center seam on the bottom surface. The upper end of the T-shaped pulley support frame is inserted into the longitudinal center seam and can move along the longitudinal center seam. The upper leg of the pulley suspension channel steel is also provided with a fixed baffle 13 for connecting the pulley suspension channel steel and the sliding door. The fixed baffle is a vertical folded edge extending upward from the edge of the upper leg.

[0022] Preferably, the pulley support frame is fixed to the lower leg of the pulley suspension channel steel by bolts, rivets or welding.

[0023] Preferably, the integral double-track slide is fixed to the upper leg of the slide suspension channel steel by bolts, rivets or welding.

[0024] like Figure 2 As shown, the integral double-track slide includes two symmetrically arranged planar tracks 21. Each track has an anti-detachment guard 22 on the side near the longitudinal center seam. The anti-detachment guard is an oblique folded edge extending obliquely upward from the edge of the planar track.

[0025] Preferably, the distance H between the lower surface of the upper leg of the pulley suspension channel steel and the upper surface of the upper leg of the slide rail suspension channel steel is... 上 Less than 10mm.

[0026] Preferably, the distance H between the lower surface of the lower leg of the pulley suspension channel steel and the upper surface of the lower leg 42 of the slide rail suspension channel steel is... 下 Less than 10mm.

[0027] Figure 4 The diagram shows the sliding door sliding device of this utility model in the open state. When the sliding door moves, the slide rail suspension channel steel and the integral double track slide are fixed to the ground and do not move. The pulley suspension channel steel and the double-row pulley assembly move together with the sliding door.

[0028] In the sliding door sliding device of this utility model, the pulley suspension channel steel, the slide rail suspension channel steel, the integral double track slide and the L-shaped angle steel are made of steel plate with a thickness of 2-5mm by bending. The pulley is selected as steel ring pulley or nylon ring pulley. When in use, the slide rail suspension channel steel is fixed to the ground, and the sliding door is fixed on the upper surface of the pulley suspension channel steel and fits against the fixed edge.

[0029] When the sliding door sliding device of this utility model is used in the sliding door of the sunroom, it ensures smooth opening and closing of the sliding door, and has the advantages of good sealing and heat preservation, rainproof and windproof, no debris, water accumulation and ice accumulation in the sliding track, no corrosion of the sliding track, and long service life.

Claims

1. A sliding door sliding device, comprising a double-track slide and a double-row pulley assembly cooperating with the double-track slide, wherein the double-row pulley assembly includes a pulley support frame and double-row pulleys mounted on the pulley support frame, characterized in that: The sliding door sliding device also includes a track suspension channel steel for suspending the double track on the ground and a pulley suspension channel steel for suspending the double rows of pulleys at the bottom of the sliding door. The opening directions of the track suspension channel steel and the pulley suspension channel steel are opposite and arranged in parallel with interlocking fasteners. The upper leg of the track suspension channel steel is located between the upper and lower legs of the pulley suspension channel steel. The double track is fixed to the lower surface of the upper leg of the track suspension channel steel, and the pulley support frame is fixed to the upper surface of the lower leg of the pulley suspension channel steel.

2. The sliding door sliding device according to claim 1, characterized in that: The double-track slide is an integral double-track slide with a longitudinal central seam on the bottom surface.

3. The sliding door sliding device according to claim 2, characterized in that: The upper leg of the pulley suspension channel steel is also provided with a fixed stop for connecting the pulley suspension channel steel with the sliding door. The fixed stop is a vertical folded edge extending upward from the edge of the upper leg.

4. The sliding door sliding device according to claim 3, characterized in that: The integral double-track slide includes two symmetrically arranged planar tracks. Each track has an anti-detachment guard edge near the longitudinal center seam. The anti-detachment guard edge is a slanted folded edge extending obliquely upward from the edge of the planar track.

5. The sliding door sliding device according to any one of claims 1 to 4, characterized in that: The pulley support frame is fixed to the lower leg of the pulley suspension channel steel by bolts, rivets or welding.

6. The sliding door sliding device according to claim 5, characterized in that: The integral double-rail slide is fixed to the upper leg of the slide suspension channel steel by bolts, rivets or welding.

7. The sliding door sliding device according to claim 6, characterized in that: The pulley support frame is an inverted T-shaped pulley support frame.

8. The sliding door sliding device according to claim 7, characterized in that: The T-shaped pulley support frame is composed of two L-shaped angle steels connected back to back.

9. The sliding door sliding device according to claim 1, characterized in that: The distance between the lower surface of the upper leg of the pulley suspension channel steel and the upper surface of the upper leg of the slide rail suspension channel steel is less than 10mm.

10. The sliding door sliding device according to claim 9, characterized in that: The distance between the lower surface of the lower leg of the pulley suspension channel steel and the upper surface of the lower leg of the slide rail suspension channel steel is less than 10mm.

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